Highlights of Quantum Information (DQI) Talks @ APS 2023 March Meeting – Part 1
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TABLE 1: Highlights of Quantum Information (DQI) Talks @ APS 2023 March Meeting – Part 1
| Paper | Author(s) | |
|---|---|---|
| 1 | Locality and Error Correction in Quantum Dynamics with Measurement Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The speed of light c sets a strict upper bound on the speed of information transfer in both classical and quantum systems. In nonrelativistic systems, the Lieb-Robinson Theorem … |
Andrew Lucas; |
| 2 | Simulating NISQ Dynamics Using Quantum Trajectories with Few Jumps Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we instead propose a deterministic method of sampling trajectories that avoids the computational overhead of stochastic trajectory sampling, is suitable for simulations of noisy intermediate-scale quantum (NISQ) devices, and has an easily computable sampling error. |
Philip Blocher; Anupam Mitra; Tameem Albash; Akimasa Miyake; Ivan Deutsch; |
| 3 | Ground State Preparation Via Unitary Time Evolution with Time-dependent Classical Fields Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This approach is an alternative to Kraus-map approaches, which are robust for essentially all initial states, but become difficult to formulate with shallow circuits for interacting models. Our examples study the Hubbard model for a wide range of interactions, and show that this unitary method has a good likelihood of working, even on near-term quantum computers. |
Zekun He; |
| 4 | Discrete-Time Quantum Walks on Compact Two-Dimensional Surfaces Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In the same year, Shenvi et al. introduced the first algorithm in the discrete-time quantum walk setting. |
Elena Van der Vorst; |
| 5 | Quantum Computation Using PT-symmetric Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we aim to ascertain the advantage offered by PT-symmetric gates for computation. |
Salini Karuvade; Abhijeet Alase; Barry Sanders; |
| 6 | Circuit Depth Versus Energy in Topologically Ordered Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We prove a nontrivial circuit-depth lower bound for preparing a low-energy state of a locally interacting quantum many-body system in two dimensions, assuming the circuit is geometrically local. |
Arkin Tikku; Isaac Kim; |
| 7 | Reducing The Qubit Requirement of Jordan-Wigner Encodings of N-mode, K-fermion Systems from N to Log(N Choose K) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate that for particle number conserving systems of K fermions and N modes, the qubit requirement can be reduced to the information theoretic minimum of log(N choose K). |
Brent Harrison; James Whitfield; Daniel Adamiak; Riley Chien; |
| 8 | Equivalence Between Fermion-to-qubit Mappings in Two Spatial Dimensions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We argue that all locality-preserving mappings between fermionic observables and Pauli matrices on a two-dimensional lattice can be generated from the exact bosonization cite{CKR18}, whose gauge constraints project onto the subspace of the toric code with emergent fermions. |
Yu-An Chen; Yijia Xu; |
| 9 | Decomposing Quantum Unitaries Into Circuits with Program Synthesis Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We want to investigate if one can employ machine learning techniques to facilitate the discovery of new algorithms. |
Leopoldo Sarra; Florian Marquardt; Kevin Ellis; |
| 10 | On Unitary K-Design with SU(d) Symmetry Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose, for the first time, an explicit unitary ensemble that can achieve unitary k-design with SU(d) symmetry by Schur-Weyl duality on SU(d) and Sn actions on qudits. |
Han Zheng; Zimu Li; Junyu Liu; Liang Jiang; |
| 11 | Entanglement in The Vertex State: Conformal Interface Approach Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use the conformal interface technique to calculate the entanglement measures of the vertex state, which include the area-law, geometrical and topological pieces, and the possible extra order one contribution. A direct consequence is the Markov gap $h=c/3log{2}$, which applies to the vertex state of general rational conformal field theory. |
Yuhan Liu; Yuya Kusuki; Ramanjit Sohal; Jonah Kudler-Flam; Shinsei Ryu; |
| 12 | Linear Growth of Circuit Complexity from Brownian Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using path integral methods, we demonstrate that Brownian quantum systems have circuit complexity that grows linearly with time. |
Gregory Bentsen; Shaokai Jian; Brian Swingle; |
| 13 | Taking Quantum States As Objective Possibilities Seriously Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I propose an axiomatic enrichment which introduces the distinction into Kolmogorov’s axiomatization, and explore an analogous mathematical modification of the standard quantum formalism in which Hilbert Space elements are no longer states of physical systems but objective possibilities, each linked to a set of facts we can observe if the possibility is actualized. |
Armin Nikkhah Shirazi; |
| 14 | Quantum Algorithms for Thermal Equilibrium from Fluctuation Theorems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Fluctuation theorems provide a correspondence between properties of quantum systems in thermal equilibrium and a work distribution arising in a non-equilibrium process that connects two quantum systems with Hamiltonians H 0 and H 1=H 0+V. Building upon these theorems, we present quantum algorithms to prepare the thermal state of H 1 at inverse temperature β≥0 and to estimate the free energy difference between the two systems. |
Rolando Somma; Yigit Subasi; Burak Sahinoglu; Gopikrishnan Muraleedharan; Zoe Holmes; |
| 15 | A Unified Graph-Theoretic Framework for Free-Fermion Solvability Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We provide a simple criterion to determine whether a spin model admits an exact description by noninteracting fermions. |
Adrian Chapman; Samuel Elman; Ryan Mann; |
| 16 | System Optimization of Superconducting Qubit Readout for Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we discuss optimizing a 49 qubit readout suitable for quantum error correction by performing an offline and model based optimization. |
Andreas Bengtsson; Alexander Opremcak; Mostafa Khezri; Daniel Sank; Paul Klimov; Julian Kelly; Jimmy Chen; |
| 17 | Bridging The Reality Gap in Quantum Devices with Physics-aware Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Disorder induced by the unpredictable distribution of material defects is one of the major contributions to the reality gap. We bridge this gap using physics-aware machine learning, in particular, using an approach combining a physical model, deep learning, Gaussian random field, and Bayesian inference. |
David Craig; Hyungil Moon; Federico Fedele; Dominic Lennon; Barnaby van Straaten; Florian Vigneau; Leon Camenzind; Dominik Zumbuhl; G. Andrew Briggs; Michael Osborne; Dino Sejdinovic; Natalia Ares; |
| 18 | Developing Robust Protocols for Calibration of A 25-qubit Annealing Device Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will provide details on our calibration routines for bringing online a 25-qubit quantum annealing testbed comprising XX single-qubit controls and YY coupler controls, all of which must be characterized individually and as a crosstalk matrix. |
Bryce Fisher; Steven Disseler; Steven Weber; Robert Rood; Cyrus Hirjibehedin; Mallika Randeria; Vladimir Bolkhovsky; John Cummings; Rabindra Das; David Kim; Jeffrey Knecht; Justin Mallek; Bethany Niedzielski; Ravi Rastogi; Kyle Serniak; Donna-Ruth Yost; Scott Zarr; Mollie Schwartz; Steven Weber; William Oliver; Jonilyn Yoder; |
| 19 | System Optimization of Gate Frequencies for Surface Code Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will introduce the frequency optimization problem and the Snake optimizer [1, 2] that we developed to solve it for Google’s flagship quantum processors. |
Paul Klimov; |
| 20 | Towards Robust Automation of Quantum Dot Bootstrapping Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop an automated routine to bridge the gap between the initial device cool-down and a voltage configuration in which other previously developed automation schemes can take over for a multiple quantum dot device. |
Danielle Middlebrooks; Justyna Zwolak; |
| 21 | Cross-architecture Tuning of Silicon and SiGe-based Quantum Devices Using Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Each device needs to be tuned to operation conditions. We give a key step towards tackling this variability with an algorithm that, without modification, is capable of tuning a 4-gate Si FinFET, a 5-gate GeSi nanowire and a 7-gate Ge/SiGe heterostructure double quantum dot device from scratch. |
Brandon Severin; Dominic Lennon; Leon Camenzind; Florian Vigneau; Federico Fedele; Daniel Jirovec; Andrea Ballabio; Daniel Chrastina; Giovanni Isella; Mathieu de Kruijf; Miguel Carballido; Simon Svab; Andreas Kuhlmann; Floris Braakman; Simon Geyer; Florian Froning; Hyungil Moon; Michael Osborne; Dino Sejdinovic; Georgios Katsaros; Dominik Zumbuhl; G. Andrew Briggs; Natalia Ares; |
| 22 | All RF-based Tuning Algorithm for Quantum Devices Using Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By exploiting their bandwidth and impedance matching, we demonstrate an algorithm that automatically tunes double quantum dots with only radio-frequency measurements. |
Barnaby van Straaten; Federico Fedele; Florian Vigneau; Joseph Hickie; Andrea Ballabio; Daniel Chrastina; Georgios Katsaros; Daniel Jirovec; Natalia Ares; |
| 23 | Automating Microscopy with Machine Learning: from Object Identification to Hypothesis Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will propose solutions such as ensemble learning and iterative training (ELIT), deep kernel learning, and structured Gaussian processes allowing for exploring complex systems and discovering structure-property relationships in an autonomous fashion. |
Maxim Ziatdinov; |
| 24 | Automated and Autonomous Scanning Probe Experiments for Manipulating and Measuring Domain Wall Properties in Ferroelectric Thin Films Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: 2 Here, we introduce a new class of automated experiments which use image-based feedback to find domain wall depinning fields. |
Sai Valleti; Yongtao Liu; Bharat Pant; Shivaranjan Raghuraman; Maxim Ziatdinov; Jan-Chi Yang; Ye Cao; Stephen Jesse; Sergei Kalinin; Rama Vasudevan; |
| 25 | Designing Models for Autonomous Small-Angle Scattering Measurements of Industrial Soft Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will cover our efforts to develop tools that can correctly label (i.e., identify, classify, label, cluster) small-angle scattering data of soft-materials. |
Tyler Martin; Peter Beaucage; |
| 26 | A Bayesian Optimized Spectral Recommender System with Dynamic Human-guided Targets for Physics Discovery Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we have extended the BO application where the user sequentially learns and update the target properties as the optimization progress, and thereby build a BO-based spectral recommendation system (BO-SRS). |
Arpan Biswas; Yongtao Liu; Rama Vasudevan; Maxim Ziatdinov; |
| 27 | Updates to An MeV Ultrafast Electron Diffraction (MUED) System for Data Analysis and Control Using Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: An MeV ultrafast electron diffraction (MUED) instrument system, such as is located at the Accelerator Test Facility (ATF) of Brookhaven National Laboratory, is a structural … |
Trudy Bolin; Salvador Sosa Guitron; Aasma Aaslam; Sandra Biedron; |
| 28 | Experimental Observation of Thermalisation with Noncommuting Charges Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report the first experimental observation of an equilibrium state predicted within quantum-information thermodynamics in 2016: the non-Abelian thermal state. |
Aleksander Lasek; Florian Kranzl; Manoj Joshi; Amir Kalev; Rainer Blatt; Christian Roos; Nicole Halpern; |
| 29 | Measurement-driven Quantum Clock Implemented with A Superconducting Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate a quantum clock implemented with a superconducting transmon qubit dispersively coupled to an open co-planar resonator for qubit state readout. |
Xin HE; Prasanna Pakkiam; Adil Gangat; Gerard Milburn; Arkady Fedorov; |
| 30 | Implementation of A Coherent Feedback Clock Using Superconducting Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the realisation of a new type of periodic quantum clock, based on coherent feedback in a system of coupled resonators. |
Stefan Zeppetzauer; Leonardo Morais; Xin HE; Gerard Milburn; Arkady Fedorov; |
| 31 | Entanglement Entropy of Highly Excited Eigenstates of SU(2) Symmetric Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we study the entanglement entropy of highly excited eigenstates of SU(2) symmetric systems to unveil the effect of noncommuting conservation laws. |
Rohit Patil; Lucas Hackl; Marcos Rigol; |
| 32 | Quantum Cross Entropy in Integrated Fluctuation Theorems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discuss the role of quantum cross entropy from the perspective of integrated fluctuation theorems beyond the standard two-time measurement scheme. |
Tharon Holdsworth; Naoki Yamamoto; Prineha Narang; Akira Sone; |
| 33 | Quantum Information Scrambling in Nonlinear Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantum information scrambling describes the spread and delocalization of quantum information throughout information bearing degrees of freedom, such that the information becomes irretrievable by means of local measurements. We study this phenomenon in harmonic oscillators with nonlinear coupling. |
Akram Touil; Sebastian Deffner; |
| 34 | Testing Quantum Microscopic Reversibility Using Quantum Optics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose and experimentally test quantum modification for the principle of microscopic reversibility, a symmetry relation between forward and backward state transitions when a system is interacting with a thermal heat bath. |
Hyukjoon Kwon; Myungshik Kim; Marco Bellini; Alessandro Zavatta; Nicola Biagi; Saverio Francesconi; |
| 35 | Doing Work and Exchanging Heat on A System Through Collisions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The collision performs work on the target system [2]. |
Felipe Barra; |
| 36 | Current Fluctuations in Open Quantum Systems: Bridging The Gap Between Quantum Continuous Measurements and Full Counting Statistics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: On the other hand, condensed matter physicists, often use full counting statistics and scattering theory to describe counting measurements, and their statistics using the cumulant generating function. In this talk, I will show how these two concepts can be bridged such that both frameworks can be leveraged simultaneously to better study, and compute, the statistical properties of quantum measurements. |
Michael Kewming; Mark Mitchison; Gabriel Landi; |
| 37 | Universal Scaling Bounds on A Quantum Heat Current Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present an upper bound on the heat current J, which is universally applicable for an arbitrarily chosen open quantum system. |
Shunsuke Kamimura; Kyo Yoshida; Yasuhiro Tokura; Yuichiro Matsuzaki; |
| 38 | Rabi Enhanced Tunneling from Solid-state Spin Qubits: A Lindblad Equation for Rabi Driven Spins in Tunneling Contact with A Reservoir Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have used the unitary time evolution operator that solves the Rabi problem to transform into the interaction picture with respect to the system Hamiltonian, which, along with typical assumptions about the bath and the secular approximation, gives a matrix form of the Lindblad equation. |
Emily Townsend; Joshua Pomeroy; Garnett Bryant; |
| 39 | Electron Induced Nanoscale Nuclear Spin Relaxation Probed By Hyperpolarization Injection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe that the 13C transverse spin relaxation times vary significantly with the extent of hyperpolarization injection, allowing the ability to measure the influence of electron mediated relaxation extending over several nanometers. |
William Beatrez; Arjun Pillai; Otto Janes; Dieter Suter; Ashok Ajoy; |
| 40 | Measurement Induced Entanglement Phase Transitions in Monitored 1D Spin Chains Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However recently a critical phase with a logarithmic scaling of the entanglement entropy in a class of integrable models has been identified, in the presence of dissipation. We explore such a critical transition in a monitored one-dimensional quantum spin chain, the transverse field Ising model (TFIM), in presence of integrability-breaking field and dissipation. |
Monalisa Singh Roy; Jonathan Ruhman; Emanuele Dalla Torre; Efrat Shimshoni; |
| 41 | Floquet Engineering of Correlated States By The Ponderomotive Potential Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We generalize the notion of Ponderomotive potential to periodically driven systems and propose it as a convenient tool to engineer their properties beyond the single particle level. |
Zhiyuan Sun; |
| 42 | Sub-Kelvin Bias and Gain Circuits for Improving Charge Sensing Signal-to-noise in Quantum Dot Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work seeks to both source and amplify the charge sensing current within the 4 K area of the cryogenic system, thus dramatically reducing the opportunity for parasitic noise source to degrade the charge sensing signal. |
Joshua Pomeroy; Pragya Shrestha; Dmitri Krymski; Nikki Ebadollahi; Runze Li; |
| 43 | A Cost-Effective Measurement System for Calibrated Characterization of Microwave Components at Cryogenic Temperatures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work presents two measurement setups and the adaptation of standard VNA calibration for a cryogenic environment. |
Nikolai Drobotun; Ruben van Gulik; Kiefer Vermeulen; Daniël Bouman; Art Salomonson; Miquel Rosa; Chun Heung Wong; Wouter Bos; Rob van den Brink; Jakob Kammhuber; Daan Kuitenbrouwer; Sal Bosman; Artem Nikitin; |
| 44 | Superconducting Non-reciprocal Bandpass Filter Based on Spatio-Temporal Inductance Modulation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, we propose the concept of a NR-Band Pass Filter, (NR-BPF) that combines the functionality of a conventional BPF with an isolator based on the concept of Spatio-Temporal Inductance Modulation (STIM). |
Yi Zhuang; Chandrashekhar Gaikwad; Daria Kowsari; Yiwei Le; Erik Henriksen; Kater Murch; Aravind Nagulu; |
| 45 | Experiments on Programmable Arrays of Rydberg Atoms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The startup Pasqal is developing a quantum computing platform made of controllable arrays of neutral atoms. We will present here the main characteristics of these devices and illustrate how applications ranging from classification tasks to simulation of quantum systems can be explored at the analog level (programming Hamiltonian sequences). |
Adrien Signoles; |
| 46 | Characterizing States and Measurements: Principles and Approaches Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For the first method, I will present experimental and simulation data obtained from real quantum processors. |
Junan Lin; Raymond Laflamme; Tal Mor; Joel Wallman; Ian Hincks; Brandon Buonacorsi; |
| 47 | Single-shot Hamiltonian Parameter Estimation By Real-time Sequential Monte-Carlo Method Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using a singlet-triplet semiconductor qubit under nuclear spin noise and charge noise, we show qubit frequency estimation per single-shot measurement improving the coherence time by more than two orders of magnitude. |
hyeongyu jang; Jehyun Kim; Jonginn Yun; Wonjin Jang; Jinwoong Kim; Jaemin Park; Hanseo Sohn; Sangwoo Sim; Min-Kyun Cho; Hanrim Kang; Hwanchul Chung; Vladimir Umansky; Dohun Kim; |
| 48 | Deep Adaptive Design for Characterisation of Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a Bayesian Experiment Design process that adaptively recommends the most optimal experiments at every step to maximise the expected information gain about the system, thus enabling optimal identification of arbitrary system model parameters. |
Anurag Saha Roy; Shai Machnes; Nicolas Wittler; |
| 49 | Autonomous Characterization of Multi-transmon Circuit QED Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate autonomous device characterization starting from minimal prior knowledge such as device layout and design parameters (e.g., qubit and resonator frequencies and coupling strengths). |
Sean van der Meer; Jorge Marques; Matvey Finkel; Martijn Veen; Marc Beekman; Nadia Haider; Leonardo DiCarlo; |
| 50 | Noise Spectroscopy of A Josephson Parametric Oscillator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present the experimental results on the noise spectroscopy of a JPO using a microwave homodyne interferometric measurement scheme where we characterize the phase and amplitude noise by continuously tracking the oscillator output dynamics. |
Gopika Lakshmi Bhai; Hiroto Mukai; Tsuyoshi Yamamoto; Jaw-Shen Tsai; |
| 51 | Non-Markovian Transient Spectroscopy in Cavity QED Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We theoretically analyze measurements of the transient field leaving a cavity as a tool for studying non-Markovian dynamics in cavity quantum electrodynamics (QED) [1]. |
William Coish; Zoé McIntyre; |
| 52 | Signatures of Open and Noisy Quantum Systems in Single-Qubit Quantum Annealing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a quantum annealing protocol that more effectively probes the dynamics of a single qubit on D-Wave’s quantum annealing hardware. |
Marc Vuffray; Zachary Morrell; Andrey Lokhov; Andreas Baertchi; Tameem Albash; Carleton Coffrin; |
| 53 | Relaxational Quantum Eigensolver: Optimization and Tuning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work draws on ideas from bath engineering, open quantum systems, and variational algorithms to develop an algorithm exhibiting continuous, approximate error correction, which we call the Relaxational Quantum Eigensolver (RQE). |
George Grattan; Alexandar Liguori-Schremp; David Rodriguez Perez; Peter Graf; Wesley Jones; Eliot Kapit; |
| 54 | A Deterministic and Shape-controlled Microwave Single-photon Source for Transduction to Optical Frequencies Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We design a two-post-cavity microwave device for deterministically generating single-photon states and controlling their temporal shape to optimally use the transducer’s bandwidth. Here, I will present our efforts of building up this single-photon source for efficient transduction of microwave photons to optical frequencies. |
Sheng-Xiang Lin; Nicholas Frattini; Robert Delaney; Sarang Mittal; Kazemi Adachi; Maxwell Urmey; Luca Talamo; Sarah Dickson; Cindy Regal; Konrad Lehnert; |
| 55 | Direct Piezoelectric Transduction to A Silicon Single-mode Acoustic Waveguide Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we design a lithium niobate transducer which is piezoelectrically coupled to microwaves and mechanically coupled to a single mode silicon acoustic waveguide. |
Oliver Hitchcock; Wentao Jiang; Felix Mayor; Matthew Maksymowych; Sultan Malik; Amir Safavi-Naeini; |
| 56 | Coherent Millimeter-wave Transduction with Lithium Niobate Electro-optics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate an integrated millimeter-wave-to-optical electro-optic transducer on a lithium niobate-on-sapphire platform. |
Kevin Multani; Jason Herrmann; Felix Mayor; Wentao Jiang; Erik Szakiel; Matthew Maksymowych; Luke Qi; Emilio Nanni; Amir Safavi-Naeini; |
| 57 | Quantum Transduction Is Enhanced By Single Mode Squeezing Operators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work [1], we introduce a new approach to relax the full matching condition to half matching condition, which can be physically achieved by introducing two-photon drive in a transducer. |
Changchun Zhong; Mingrui Xu; Aashish Clerk; Hong Tang; Liang Jiang; |
| 58 | Incorporating Single-photon Counting with An Efficient Electro-optic Transducer (part I) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the experimental incorporation of optical photon counting with a high-efficiency transducer. |
Luca Talamo; Maxwell Urmey; Nicholas Frattini; Jon Kindem; Sarang Mittal; Kazemi Adachi; Sarah Dickson; Sheng-Xiang Lin; Cindy Regal; Konrad Lehnert; |
| 59 | Incorporating Single-photon Counting with An Efficient Electro-optic Transducer (parts II) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the experimental incorporation of optical photon counting with a high-efficiency transducer. |
Maxwell Urmey; Luca Talamo; Nicholas Frattini; Jonathan Kindem; Sarang Mittal; Kazemi Adachi; Sarah Dickson; Sheng-Xiang Lin; Konrad Lehnert; Cindy Regal; |
| 60 | Microwave-optical Photon Correlations in A Piezo-optomechanical Quantum Transducer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: High repetition rate and efficient readout allow us to detect a large intensity correlation between microwave and optical fields, nearly twice the value for thermal states. We outline a scheme to utilize these correlations for optically heralded entanglement generation between remote superconducting qubits. |
Srujan Meesala; David Lake; Steven Wood; Piero Chiappina; Andrew Beyer; Matthew Shaw; Oskar Painter; |
| 61 | Three-dimensional System Design and Material Characterization for Microwave-optical Quantum Transduction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present our progress in realizing a three-dimensional microwave-optical transducer based on a long-coherence-time superconducting cavity integrated with an electro-optic optical resonator. |
Changqing Wang; Ivan Gonin; Anna Grassellino; Sergey Kazakov; Alexander Romanenko; Vyacheslav Yakovlev; Silvia Zorzetti; |
| 62 | Microwave to Optical Transduction with Piezo-Optomechanics Utilizing Brillouin Scattering Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we combine resonantly-enhanced piezoelectric coupling and Brillouin optomechanical interaction to demonstrate the first Brillouin-based electro-optomechanical system with bulk crystal, enabling new opportunities for spectroscopy and transduction. In particular, we present its capability as a bi-directional quantum transducer. |
Taekwan Yoon; David Mason; Vijay Jain; Yiwen Chu; Luigi Frunzio; Peter Rakich; Robert Schoelkopf; |
| 63 | Minimizing High-power Dielectric Loss and Noise in A Mechanically-mediated Electro-optic Transducer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present efforts to reduce the loss and noise through thermal treatment and geometrical screening of the dielectric. |
Sarang Mittal; Kazemi Adachi; Nicholas Frattini; Sheng-Xiang Lin; Maxwell Urmey; Luca Talamo; Sarah Dickson; Cindy Regal; Konrad Lehnert; |
| 64 | Reliable Small-gap Capacitors in An Electro-opto-mechanical Transducer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an upgraded flip-chip design that improves electromechanical coupling and device reliability by rigidly pinning the membrane on a node of motion. |
Kazemi Adachi; Sarang Mittal; Nicholas Frattini; Sheng-Xiang Lin; Maxwell Urmey; Luca Talamo; Sarah Dickson; Cindy Regal; Konrad Lehnert; |
| 65 | Superconducting Qubits for Phononic Integration Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present our experimental results developing superconducting qubits on material platforms for phononic integration. |
William Kindel; Sueli Skinner-Ramos; Michael Miller; Lisa Hackett; Courtney Nordquist; Brandon Smith; C. Thomas Harris; Rupert Lewis; Matt Eichenfield; |
| 66 | Introducing The Kapitzonium – Quantum Control and Noise Protection of A Floquet $0-pi$ Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose the emph{Kapitzonium}: a Floquet qubit that is the superconducting circuit analog of a mechanical Kapitza pendulum. |
Amir Safavi-Naeini; Zhaoyou Wang; |
| 67 | Encoding Qubits in Multiple Oscillators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: More precisely, we introduce a method to autonomously stabilize the code space of multimode GKP codes, and introduce a two-mode grid code which has improved properties with respect to traditional single mode GKP codes. |
Baptiste Royer; Steven Girvin; Shraddha Singh; |
| 68 | Exploring Connections Between Continuous and Discrete Variable Theorems Via The Gottesman-Kitaev-Preskill Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Second, we define a measure for magic resource in multiqubit pure states [2], a desired property in fault-tolerant quantum computation. With the GKP code and the resource theory of Wigner logarithmic negativity in CV, we construct the measure and prove its properties for the DV system. |
Laura García-Álvarez; |
| 69 | Hybrid Quantum Information Processing with Spin and Motional States of Trapped Ions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here I present an experimental implementation of controlled-beamsplitter and controlled-SWAP gates that involves quantum states of two bosonic modes and a control qubit in a system of trapped Yb-171 ions. |
Dzmitry Matsukevich; |
| 70 | Real-time Quantum Error Correction Beyond Break-even Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Whether it is practically possible to utilize QEC for extending quantum coherence thus remains an open question. We answer it by demonstrating a fully stabilized and error-corrected logical qubit whose quantum coherence is significantly longer than that of all the imperfect quantum components involved in the QEC process, beating the best of them with a coherence gain of $G = 2.27 pm 0.07$. |
Volodymyr Sivak; Alec Eickbusch; Baptiste Royer; Shraddha Singh; Ioannis Tsioutsios; Suhas Ganjam; Alessandro Miano; Benjamin Brock; Andy Ding; Luigi Frunzio; Steven Girvin; Robert Schoelkopf; Michel Devoret; |
| 71 | Privacy-preserving Machine Learning with Tensor Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will argue and practically illustrate that insights coming from the tensor network representations of quantum many-body states can help in devising better privacy-preserving machine learning algorithms. |
Alejandro Pozas-Kerstjens; |
| 72 | Simulating A Low-weight Encoding of The Fermi-Hubbard Model with QAOA Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In order to compare these results to gate-model systems, we turn to a QAOA-style approach and replace the annealing schedule with both Trotterizations thereof and also more general Hamiltonian-variational ansatze based on the terms of the mapped FH Hamiltonian. We investigate the achievable ground state fidelities of these gate sequences, consider various optimizations of the ansatze structure, and offer resource estimations of the optimized QAOA protocols for near-term hardware. |
Joseph Barreto; Ryan Levy; Lucas Brady; Zoe Gonzalez Izquierdo; Jeffrey Marshall; Eleanor Rieffel; Zhihui Wang; Filip Wudarski; |
| 73 | IMPROVING QUANTUM STATE PREPARATION TECHNIQUES USING EIGENVECTOR CONTINUATION Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A number of important limitations remain, such as poor scalability, barren plateaus in parameter optimization, and difficulties with circuit implementation. Here, we consider eigenvector continuation (a quantum subspace expansion method) as a potential solution to these issues. |
Anjali Agrawal; Akhil Francis; Alexander Kemper; |
| 74 | Quantum-inspired Classical Algorithm for Molecular Vibronic Spectra Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we provide a quantum-inspired classical algorithm to solve the problem as accurately as running a boson sampling. |
Changhun Oh; Youngrong Lim; Yat Wong; Bill Fefferman; Liang Jiang; |
| 75 | Programmable Adiabatic Demagnetization for Systems with Trivial and Topological Excitations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a simple, robust protocol to prepare a low-energy state of an arbitrary Hamiltonian on a quantum computer. |
Anne Matthies; Achim Rosch; Mark Rudner; Erez Berg; |
| 76 | A Density-matrix Renormalization Group Algorithm for Simulating Quantum Circuits with A Finite Fidelity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will introduce a recently developed density-matrix renormalization group (DMRG) algorithm for the simulation of quantum circuits (https://arxiv.org/abs/2207.05612). |
Thomas Ayral; |
| 77 | The Landscape of Max-Cut QAOA Lie Algebras Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, given a simple graph G = (V, E), we study the DLAs of different circuit ansatzes aimed at generating the ground state of $H_p$, the Hamiltonian whose ground states are solutions to the Max-Cut problem on G, including but not limited to circuit ansatzes based on automorphism orbits and subsets of common degree, which naturally incorporate symmetries coming from parity and automorphisms of G. We investigate a variety of salient features of these DLAs, such as their linear symmetries, quadratic symmetries, decomposition into simple Lie algebras, and irreducible representation structure. |
Sujay Kazi; Martin Larocca; Robert Zeier; Marco Farinati; Marco Cerezo; Patrick Coles; |
| 78 | Exploring Magnetic Phases in A Qubit Penrose Quasicrystal Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This study demonstrate that inducing multiple spins arrangements in one single object would offer the prospect of applications in magnetic memory storage by encoding multiple magnetic states in a same geometry. |
Alejandro Lopez-Bezanilla; |
| 79 | Solving Continuous Non-convex Optimization Problems Using A Coherent Optical Network Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose modifications to the CIM dynamics that allow the optical pulses in the ring cavity to behave like soft spins, providing a means for solving continuous non-convex optimization problems natively in a coherent optical network. |
Farhad Khosravi; Ugur Yildiz; Artur Scherer; Pooya Ronagh; |
| 80 | Semiclassical Approximate Optimization Algorithm Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we develop a new Semiclassical Approximate Optimization Algorithm (SAOA) as a classical counterpart to the Quantum Approximate Optimization Algorithm (QAOA). |
Peter Schuhmacher; Aditi Misra-Spieldenner; Tim Bode; Tobias Stollenwerk; Dmitry Bagrets; Frank Wilhelm; |
| 81 | QAOA Algorithms Creates Pseudo-Boltzmann Pure States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will discuss the nature of the pure states created by single-layer and multi-layer Quantum Approximate Optimization Algorithm (QAOA) on universal Ising spin models. |
Juan Jose Garcia-Ripoll; Diego Porras; Pablo Díez-Valle; |
| 82 | Leveraging Quantum Walks and Spin Frustration for Computation and Error Mitigation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will give an overview of recent work on using quantum walks for solving optimisation problems, and related work on error mitigation. |
Viv Kendon; |
| 83 | SQUID-Based Broadband Microwave Isolator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: As an alternative we describe a circuit level broadband microwave isolator utilizing DC-SQUIDs. |
Matthew Beck; |
| 84 | Systematic Design of Microwave Parametric Amplifiers, Frequency Converters, and Circulators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will present data from degenerate parametric amplifiers having engineered Chebyshev gain profile with over 400 MHz bandwidth and 20 dB gain, and show preliminary results from frequency converting devices. |
Ofer Naaman; Jose Aumentado; Ted White; Randy Kwende; Ryan Kaufman; |
| 85 | Quantum Efficient Measurement of A Transmon Via A High Saturation Power Josephson Parametric Amplifier Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: High-fidelity readout requires a short and strong pulse transiting the qubit’s measurement mode which is then processed by a necessarily high bandwidth, high saturation power, quantum-limited amplifier. In this talk, we present the design and fabrication of a single-mode amplifier which meets these criteria. |
Ryan Kaufman; Chenxu Liu; Katarina Cicak; Boris Mesits; Mingkang Xia; Chao Zhou; Maria Nowicki; David Pekker; Jose Aumentado; Michael Hatridge; |
| 86 | Quantum Efficient Measurement of A Transmon Via A High Saturation Power Josephson Parametric Amplifier Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present a set of methods for optimizing transmon measurement fidelity using a high-saturation power, quantum-efficient, rf-SQUID-based parametric amplifier. |
Boris Mesits; Ryan Kaufman; Saeed Khan; Leon Bello; Mingkang Xia; Chao Zhou; Maria Nowicki; Hakan Tureci; Michael Hatridge; |
| 87 | Vacuum Squeezing in Resonant SNAIL Parametric Amplifier Operated Near The Kerr-free Point Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: One exception is the SNAIL parametric amplifier, which can be designed and flux-biased to reach a point where the Kerr nonlinearity reaches zero and third-order nonlinearity is still significant. We will report experimental results on the degree of squeezing of a resonant three-wave-mixing SNAIL parametric amplifier operated in the vicinity of its Kerr-free point. |
Theo Shaw; Zhuoqun Hao; Ameya Riswadkar; Shyam Shankar; |
| 88 | Fabrication of Low-loss Josephson Junction Based Parametric Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, a key challenge is the realization of low-loss superconducting devices. We achieve this goal by employing careful cleaning steps during the fabrication of the superconducting circuits. |
Kedar Honasoge; Yuki Nojiri; Daniil Bazulin; Leon Koch; Thomas Luschmann; Niklas Bruckmoser; Maria-Teresa Handschuh; Florian Fesquet; Fabian Kronowetter; Michael Renger; Achim Marx; Rudolf Gross; Kirill Fedorov; |
| 89 | Filter Synthesis for Wideband Parametric Amplifier and Converter Design Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: These are closely related to wideband matching circuit synthesis and filter design techniques that are well-known in modern electrical engineering. In this talk, I will discuss the links between these disparate approaches and outline the basic reasoning and methodology for synthesizing more complex parametric circuit designs for wideband parametric amplifiers and frequency converters using modulated inductances such as Josephson junctions and kinetic inductance elements (see O. Naaman, and J. Aumentado, "Synthesis of Parametrically Coupled Networks." |
Jose Aumentado; |
| 90 | Magnetic-Field Resilient Microwave Quantum Squeezer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate high-degree microwave vacuum squeezing using a magnetic-field resilient amplifier made from NbN thin films. |
Yufeng Wu; Mingrui Xu; Hong Tang; |
| 91 | Readout of A Quantum Processor with High Dynamic Range Josephson Parametric Amplifiers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate that by replacing the dc-SQUID in our impedance-matched parametric amplifiers with an rf-SQUID array, we can achieve an over 100-fold increase in saturation power. |
Theodore White; Ofer Naaman; Alexander Opremcak; Daniel Sank; George Sterling; |
| 92 | Designing Pump-efficient Josephson Parametric Amplifiers with High Dynamic Range Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a circuit that consists of an array of RF SQUIDS, with each RF SQUID shunted by additional current-biased Josephson junctions. |
Nicholas Hougland; Ryan Kaufman; Boris Mesits; Michael Hatridge; David Pekker; |
| 93 | DC-powered Superconducting Microwave Amplifiers Based on Inelastic Cooper-pair Tunnelling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have already demonstrated near quantum-limited amplification with ICTAs. |
Naveen Nehra; Ulrich Martel; Florian Blanchet; Max Hofheinz; |
| 94 | Compact Inductor-capacitor Resonators at Subgigahertz Frequencies Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an analytical model of a compact LC resonator design where the electrical parameters are directly expressed from the circuit geometry. |
Qi-Ming Chen; Rostislav Duda; Aarne Keränen; Priyank Singh; Arman Alizadeh; Mikko Möttönen; |
| 95 | Quantum Embedding Approaches for Materials Simulations on Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present an algorithm to compute Green’s functions on quantum computers for interacting electron systems. |
Francois Jamet; Abhishek Agarwal; Ivan Rungger; |
| 96 | Quantum Computing Simulation of Nonlinear Optical Response in Hubbard Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we show that the task is well-suited for noisy intermediate-scale quantum (NISQ) computers that can efficiently simulate the time evolution of the interacting wavefunction between the different light pulse. |
Peter Orth; Anirban Mukherjee; Yong-Xin Yao; Alexander Huynh; Thais Trevisan; |
| 97 | Effective Calculation of The Green’s Function in The Time Domain on Near-term Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose an improved quantum algorithm to calculate the Green’s function through real-time propagation, and use it to compute the retarded Green’s function for the two-, three-, and four-site Hubbard models. |
Francesco Libbi; Jacopo Rizzo; Francesco Tacchino; Nicola Marzari; Ivano Tavernelli; |
| 98 | Modelling Carbon Capture on Metal-organic Frameworks with Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Fragmentation strategies based on Density Matrix Embedding Theory are applied, using a variational quantum algorithm as a fragment solver, along with active space selection to minimise qubit number. |
Wassil Sennane; Marko Rancic; Gabriel Greene-Diniz; David Zsolt Manrique; Yann Magnin; Philippe Cordier; Philip Llewellyn; Michal Krompiec; David Muñoz Ramo; Elvira Shishenina; |
| 99 | Bounds on Trotter Depth for Quantum Simulation of Some Important Condensed Matter Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this way, we can determine which models will be of greater or lesser utility as quantum technology advances and the algorithms themselves become tractable. |
Ryan Scott; Nathan Myers; Woo-Ram Lee; Kwon Park; Vito Scarola; |
| 100 | Making Trotterization Adaptive for NISQ Devices and Beyond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we introduce an adaptive Trotterization scheme providing a controlled solution of the quantum many-body dynamics of local observables. |
Hongzheng Zhao; Roderich Moessner; Marin Bukov?; Markus Heyl; |
| 101 | Benchmarking Quantum Simulation Costs for Many-body Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To assess the potential for near-term quantum computers to simulate many-body systems we compare two significant measures of computational cost, the maximum Pauli depth and a bound on the number of Trotter steps needed to accurately simulate the system’s time evolution, for two prominent and closely related many-body models, the Hubbard and the t-J model. |
Nathan Myers; Ryan Scott; Kwon Park; Vito Scarola; |
| 102 | Short Depth Algorithm for High Temperature Gibbs State Sampling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a method based on sampling from a quasi-distribution consisting of products of mixed state on local clusters. |
jeffrey cohn; Norhan Eassa; Mahmoud Moustafa; |
| 103 | Quantum Computation of Phase Transition in Φ4 Scalar Field Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: It has been demonstrated that the critical point of the phase transition in φ 4 scalar quantum field theory in one space and time dimension can be approximated via a Gaussian Effective Potential (GEP). Here we demonstrate how this critical point may be estimated on quantum hardware. |
Shane Thompson; George Siopsis; |
| 104 | Preparing Quantum Ensembles Using Mid-circuit Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, non-trivial ensembles cannot be prepared using unitary quantum gates alone. Therefore, we propose to prepare quantum ensembles by taking advantage of another resource available in quantum computing, quantum measurements. |
John Stenger; Stephen Hellberg; Daniel Gunlycke; |
| 105 | Variational Microcanonical Estimator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a variational quantum algorithm for estimating microcanonical expectation values in a nonintegrable model. |
Klee Pollock; Thomas Iadecola; Peter Orth; |
| 106 | Extensions of The Linear Embedding Quantum Algorithm for Lattice Boltzmann Fluid Simulation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce an approach to achieving non-unitary evolution, utilizing additional bosonic modes in the Fock space, benefitting from the nature of nonlinearity in the lattice Boltzmann equations, and present it as an alternative to the linear combination of unitaries that utilize additional ancilla qubits. |
Wael Itani; Katepalli Sreenivasan; |
| 107 | Simulating The Non-Hermitian Skin Effect on A Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To realize the NHSE on a quantum computer, not only must the time evolution operator be non-unitary, it must also act over sufficiently many qubits to implement spatial non-reciprocity. In this talk, we describe how such non-unitary operations can be implemented by embedding them in a quantum circuit with ancilla qubits. |
Ruizhe Shen; Tianqi Chen; Bo Yang; Ching Hua Lee; |
| 108 | Efficient Decomposition of Multi-qubit Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show how to efficiently decompose a multi-qubit gate into native two-qubit gates minimizing both the depth and the number of two-qubit gates. |
Pallasena Viswanathan Sriluckshmy; Vicente Pina Canelles; Manuel G. Algaba; Fedor Simkovic; Martin Leib; |
| 109 | Random Circuit Sampling Revisited: Part I Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will cover progress on RCS on both fronts. |
Sergio Boixo; |
| 110 | Random Circuit Sampling Revisited: Part II Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will cover progress on RCS on both fronts. |
Yu Chen; |
| 111 | Improved Simulations of Random Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: In the past few years, numerical techniques to classically simulate quantum circuits have steadily improved. In my presentation, I will review some of our latest advances and … |
Salvatore Mandra; |
| 112 | Quantum Routing with Teleportation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the problem of implementing arbitrary permutations of qubits under interaction constraints in quantum systems that allow for arbitrarily fast local operations and classical communication (LOCC). |
Dhruv Devulapalli; Andrew Childs; Alexey Gorshkov; Eddie Schoute; Aniruddha Bapat; |
| 113 | Inteference Tomography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a modified version of the same scheme that computes the sign of all expectation values. |
Timothy Skaras; Paul Ginsparg; |
| 114 | Co-Designing The QPU’s Topology for A Quantum Algorithm Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: [1] Transpiling a quantum algorithm to a QPU with limited connectivity introduces the need of SWAP gates and a deeper circuit, producing more errors in the computation. In this talk, we discuss recent progress on Co-Designing a QPU’s topology (its physical two-qubit connections) to a specific algorithm’s structure (its two-qubit gates), showing how this can reduce the number of required SWAP gates, as well as the extra depth introduced by them. |
Vicente Pina Canelles; Martin Leib; Adrian Auer; Inés de Vega; |
| 115 | Clifford+T-gate Decomposition with Limited Number of T Gates and Performance of Unitary Coupled Cluster Ansatz in Early-FTQC Era Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a method to provide a Clifford+T-gate decomposition of a given quantum gate when the maximum number of T gates available is restricted especially in an early stage of fault-tolerant quantum computation (FTQC). |
Kohdai Kuroiwa; Yasunori Lee; Yuya Nakagawa; |
| 116 | Universal Parity Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present a universal gate set for quantum computing with all-to-all connectivity and intrinsic robustness to bit-flip errors based on the parity encoding [1,2]. |
Wolfgang Lechner; |
| 117 | Numerical Analysis of Quantum Circuits for State Preparation and Unitary Operator Synthesis Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By considering all possible gate configurations, we determine the maximum achievable fidelity as a function of quantum circuit size. |
Sahel Ashhab; Naoki Yamamoto; Fumiki Yoshihara; Kouichi Semba; |
| 118 | Advantages and Limitations of Quantum Routing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider quantum routing in two models: (1) allowing arbitrary two-qubit unitaries, or (2) allowing Hamiltonians with norm-bounded interactions. |
Eddie Schoute; Aniruddha Bapat; Alexey Gorshkov; Andrew Childs; |
| 119 | Optimizing Quantum Circuits with Riemannian Gradient Flow Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Since quantum circuits are elements of the special unitary group, we can consider an alternative optimization perspective that depends on the structure of this group. In this work, we investigate a Riemannian optimization scheme over the special unitary group and we discuss its implementation on a quantum computer. |
Roeland Wiersema; |
| 120 | Quantum Algorithm for Unscrambling Quantum Information Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our work, we show that for t−doped Clifford black holes – that are, black holes modeled by random Clifford circuits polluted with an amount t of non-Clifford resources – a randomized Clifford decoder can be learned using an algorithm requiring O(poly(n)exp(t)) queries access to the t-doped Clifford black hole. |
Salvatore Francesco Emanuele Oliviero; Lorenzo Leone; Alioscia Hamma; |
| 121 | Multivariable Quantum Signal Processing (M-QSP): Prophecies of The Two-headed Oracle Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work introduces a corresponding theory of QSP over multiple variables: M-QSP. |
Zane Rossi; |
| 122 | Quantum Kernel Methods for Supervised Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Operating within constraints of presently available quantum hardware, this work examines two promising avenues for NISQ-compatible applications. |
Ara Ghukasyan; |
| 123 | Implementing Universal Control in Encoded Exchange-only Si/SiGe Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This challenging experiment required key advances in fabrication, automation, calibration, software and analysis. In this talk, I will elaborate on several of these advances that enabled exchange-only quantum computing in arrays of dots, including pathways to reduce error and to increase scale. |
Aaron Weinstein; |
| 124 | Magnetic Gradient Fluctuation Compensation During Universal Control of A Si/SiGe Exchange-only Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate that is possible to construct a complete set of Clifford gates that provides universal control over DFS qubits while simultaneously incorporating gradient compensation echoes. |
Teresa Brecht; |
| 125 | Driving Charge Noise Sources in Semiconductor Qubit Devices with Oscillating Electric Field Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a method to characterize the TLSs and reduce the noise by applying an oscillating electric field to drive the defects. |
Yujun Choi; Susan Coppersmith; Robert Joynt; |
| 126 | How Cryogenic Illumination Resets Gate Defined Semiconductor Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We find that illumination under an applied gate voltage can be used to dial in a specific, stable, and reproducible threshold voltage in the range of ±0.5 V. Outside this range the threshold voltage can still be tuned, however the tunability diminishes due to the finite density of interface traps at the oxide interface, eventually saturating near ±1 V. We present a simple and intuitive model that explains both these results and why cryogenic illumination is successful at resetting quantum dot qubit devices after charging events. |
Michael Wolfe; Brighton Coe; Tyler Kovach; Thomas McJunkin; Benjamin Harpt; Donald Savage; Max lagally; Gabriel Bernhardt; Robert McDermott; Shimon Kolkowitz; Mark Eriksson; |
| 127 | Fast Quantum Control Via Adiabatic Resonance Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose a universal requirement for all schemes aiming at accelerating AP, that we call the "adiabatic resonance" (AR) condition. |
Xuedong Hu; Xinyu Zhao; |
| 128 | High-fidelity CPHASE Gate in A Pair of Capacitively Coupled Few-electron Singlet-triplet Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In contrast to conventional two-electron singlet-triplet qubits, we propose to host the capacitive gates between a pair of four-electron singlet-triplet qubits, each of which is operated in the detuning regime where the electron occupation is asymmetric. |
Xin Wang; Guo Xuan Chan; |
| 129 | Measurement of Correlated Charge Noise of Two Coupled Silicon Quantum Dot Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For these systems, charge noise due to fluctuating electric fields remains an important driver for their decoherence [2]; however, the correlation of this noise between qubits has not been extensively studied. In this talk, we discuss our results regarding this noise affecting two adjacent double quantum dots (DQDs) in a linear array Si/SiGe heterostructure device. |
John Rooney; Will Qinghe Wang; HongWen Jiang; |
| 130 | Fidelity Assessment and Tomography of Symmetrically Pulsed 2Q Gates in MOS Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we study two-qubit gate fidelities in silicon MOS double quantum dot systems using three similar devices. |
Tuomo Tanttu; Wee Han Lim; Jonathan Huang; Nard Dumoulin Stuyck; William Gilbert; MengKe Feng; Jesus Cifuentes Pardo; Amanda Seedhouse; Christopher Escott; Kohei Itoh; Michael Thewalt; Fay Hudson; Andrea Morello; Arne Laucht; Henry Yang; Andre Saraiva; Andrew Dzurak; |
| 131 | Dispersively Sensed Entangling Gate in Silicon Quantum Dots Fabricated on 300mm Wafers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This is paired with fast readout via radio-frequency dispersive measurement, enabled by an off-chip 512 MHz superconducting resonator, allowing projective measurement of the two-electron spin states. We demonstrate coherent control via the exchange interaction to perform a √SWAP gate in ≤ 8 ns within a decay time of T 2 SWAP ≈ 400 ns, leading to a gate quality factor ≈ 25 at this control point. |
Jacob Chittock-Wood; Ross Leon; Michael Fogarty; Sofia Patomäki; Felix von Horstig; Adam Siegel; Hamza Jnane; Julien Jussot; Stefan Kubicek; Bogdan Govoreanu; Simon Benjamin; Fernando Gonzalez-Zalba; John Morton; |
| 132 | Efficient Entanglement Generation Using A Spin Bus Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work demonstrates the potential of multi-qubit gates for the efficient implementation of large quantum circuits. |
Miguel Rodriguez; Mark Friesen; Yun-Pil Shim; |
| 133 | GPU-Accelerated Simulations of Charge Qubits in Semiconductor Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present optimal qubit basis definitions that maximize the fidelity of logic operations and put forward pulse sequences that achieve a universal set of operations. |
Hugo Lepage; |
| 134 | Sources of Dephasing in Si/SiGe Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We utilize a sensor dot positioned near the Si/SiGe quantum dot (QD) to probe the Hz range of the power spectral density (PSD) of electrostatic charge noise. |
Amir Shapour Mohammadi; Adam Mills; Jason Petta; |
| 135 | Quantum Optimal Control of Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We review efficient algorithms to simulate and optimally control few- and many-body quantum dynamics and present an information theoretical analysis of quantum optimal control processes, highlighting the potential applications and the limits of optimal control methods arising from geometrical, energetic and information arguments. |
Simone Montangero; |
| 136 | Calibration Methods for Numerically Optimized Gates: Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Moreover, numerically designed pulses usually show poor performances in an experimental setting due to their sensitive nature toward model parameters. In this two-part talk, we try to explore a new method of systematically connecting optimal control theory with gradient-free calibration in experiments. |
Vivek Maurya; Holger Haas; Daniel Puzzuoli; Zoé McIntyre; Lev Bishop; |
| 137 | Calibration Methods for Numerically Optimized Gates: Part II Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Applying the techniques of optimal control theory to the design of high-fidelity quantum gates typically requires that the Hamiltonian used to model the system be highly accurate. |
Zoé McIntyre; Holger Haas; Daniel Puzzuoli; Vivek Maurya; Lev Bishop; |
| 138 | Coupler-mediated Unconditional Reset of Fixed-frequency Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present an unconditional reset protocol for fixed frequency qubits in a flux tunable multi-qubit coupler architecture. |
Gerhard Huber; Federico Roy; Max Werninghaus; Niklas Bruckmoser; Niklas Glaser; Leon Koch; Gleb Krylov; Joao Romeiro; Malay Singh; Ivan Tsitsilin; Stefan Filipp; |
| 139 | Quantum-mechanical Effects of The Driving Field on A Superconducting Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present randomized-benchmarking results characterizing the infidelity due to the quantum fluctuations in the driving field. |
Aashish Sah; Suman Kundu; Timm Mörstedt; Florian Blanchet; András Gunyhó; Giacomo Catto; Priyank Singh; Jian Ma; Aarne Keränen; Santos Wallace; Arman Alizadeh; Mikko Möttönen; |
| 140 | Using Non-standard and Non-uniform 2-qubit Basis Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop a theoretical framework for identifying good 2Q basis gates on "nonstandard" Cartan trajectories that deviate from "standard" trajectories like XX and XY. |
Sophia Lin; Sara Sussman; Casey Duckering; Pranav Mundada; Jonathan Baker; Rohan Kumar; Andrew Houck; Frederic Chong; |
| 141 | Progress on A Tunable Coupler Architecture for Parametric Gates Between Far-detuned Fixed-frequency Transmon Qubits: Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we discuss progress on an architecture that uses a generalized flux qubit to couple two far-detuned fixed-frequency transmon qubits. |
Sara Sussman; Charles Guinn; Pranav Mundada; Andrei Vrajitoarea; Catherine Leroux; Alexander Place; Camille Le Calonnec; Agustin Di Paolo; Alexandru Petrescu; Alexandre Blais; Andrew Houck; |
| 142 | Progress on A Tunable Coupler Architecture for Parametric Gates Between Far-detuned Fixed-frequency Transmon Qubits: Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we discuss progress on an architecture that uses a generalized flux qubit to couple two far-detuned fixed-frequency transmon qubits. |
Charles Guinn; Sara Sussman; Pranav Mundada; Andrei Vrajitoarea; Catherine Leroux; Alexander Place; Camille Le Calonnec; Agustin Di Paolo; Alexandru Petrescu; Alexandre Blais; Andrew Houck; |
| 143 | Long-distance Transmon Coupler As A Building Block for Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate a tunablequbit-qubit coupler based on a floating transmon device which allows us to place qubits at least 2 mm apart from each other while maintaining over 50 MHz coupling between the coupler and the qubits. |
Antti Vepsäläinen; Fabian Marxer; Shan Jolin; Jani Tuorila; Alessandro Landra; Caspar Ockeloen-Korppi; Wei Liu; Kuan Tan; Juha Hassel; Mikko Möttönen; Johannes Heinsoo; |
| 144 | Implementing and Characterizing High-fidelity Two-qubit Gates with Long-distance Transmon Coupler Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In a device featuring the long-distance transmon coupler, we have achieved a controlled- Z (CZ) gate with (99.81 ± 0.02)% fidelity [1]. |
Fabian Marxer; Antti Vepsäläinen; Shan Jolin; Jani Tuorila; Alessandro Landra; Caspar Ockeloen- Korppi; Wei Liu; Kuan Tan; Juha Hassel; Mikko Möttönen; Johannes Heinsoo; |
| 145 | Characterisation of A 3D-integrated 16-qubit Superconducting Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: High coherence and low crosstalk were recently shown in an uncoupled 4-qubit prototype of a tileable 3D-integrated circuit architecture [3] which should maintain performance at larger scale due to the simple tileable design and the use of off-chip inductive shunting to remove spurious enclosure modes. Here we present measurements of a larger scale version of this circuit, with 16 uncoupled qubits. |
Vivek Chidambaram; Peter Spring; Giulio Campanaro; Shuxiang Cao; Simone Fasciati; James Wills; Mustafa Bakr; Boris Shteynas; Peter Leek; |
| 146 | Modular Flip-chip Architecture for Generalized Flux Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To investigate innovative coupling and scaling strategies, we developed a modular flip-chip architecture, in which the various circuit elements reside on dedicated chips that are capacitively coupled. |
Simon Geisert; Soeren Ihssen; Patrick Winkel; Martin Spiecker; Patrick Paluch; Dennis Rieger; Simon Guenzler; Nicolas Zapata; Nicolas Gosling; Wolfgang Wernsdorfer; Ioan Pop; |
| 147 | Two-qubit Gate Demonstration on Superconducting Overlap Qubits Compatible with Cryo-CMOS Multiplexer Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we will present a two-qubit device with flux-tunable coupler fabricated with the overlap technique. |
Anton Potocnik; Rohith Acharya; Tsvetan Ivanov; A. M. Vadiraj; Jacques Van Damme; Shana Massar; Daniel Perez Lozano; Massimo Mongillo; Danny Wan; Kristiaan De Greve; |
| 148 | Iterative Approaches to Quantum Optimization Via Problem Reductions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: An alternative paradigm is to instead use the quantum computer in an iterative fashion to obtain partial information about the given problem instance at each step (such as expectation values of local operators or other instance properties), which is then used to classically simplify the instance, and after enough iterations a global solution is obtained. In this direction we propose and study a general hybrid quantum-classical framework for quantum optimization via iterative problem reductions. |
Stuart Hadfield; Sohaib Alam; Lucas Brady; Zhihui Wang; |
| 149 | How Much Entanglement Do Quantum Optimization Algorithms Require? Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: An Adaptive Derivative-Assembled Problem-Tailored (ADAPT) variation of QAOA improves the convergence rate by allowing entangling operations in the mixer layers whereas it requires fewer CNOT gates in the entire circuit. In this talk, I will examine the entanglement generated during the execution of ADAPT-QAOA and show that its behavior is quite different from standard QAOA. |
Yanzhu Chen; Linghua Zhu; Chenxu Liu; Nicholas Mayhall; Edwin Barnes; Sophia Economou; |
| 150 | How Hard Is It to Outperform A Classical Simulator at Running A Quantum Optimization Algorithm? Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we review recent work on one pattern of VQA, the QAOA ansatz. |
Maxime Dupont; Nicolas Didier; Mark Hodson; Joel Moore; Matthew Reagor; |
| 151 | Spectral Analysis for Variational Quantum Algorithms: Noise Diagnostics, Error Mitigation, and Efficient Cost Function Recovery Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the cost function of variational quantum algorithms (VQAs) from a spectral analysis perspective. |
Enrico Fontana; Cristina Cîrstoiu; Ivan Rungger; Ross Duncan; |
| 152 | Performances and Limitations of Variational Quantum Algorithms Under Realistic Noise Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider the performances of VQAs under more realistic noise models, like dephasing and/or amplitude-damping noise, focusing on the Quantum Approximate Optimization Algorithm (QAOA) for MaxCut problems. |
Marco Schumann; Frank Wilhelm-Mauch; Alessandro Ciani; |
| 153 | Measurement-based Approaches to Quantum Approximate Optimization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we explore variants of parameterized quantum algorithms related to the measurement-based quantum computing paradigm. |
Tobias Stollenwerk; Stuart Hadfield; |
| 154 | Testing Symmetry on Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Motivated by this perspective, this paper details several quantum algorithms that test the symmetry of quantum states and channels. |
Soorya Rethinasamy; Margarite LaBorde; Mark Wilde; |
| 155 | Error Mitigated Parity Quantum Optimization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a novel approach that exploits the architecture’s intrinsic structure to mitigate bit-flip errors. |
Glen Bigan Mbeng; Anita Weidinger; Wolfgang Lechner; |
| 156 | Variational Algorithms for Quantum Dynamics with Short Depth Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Under the assumption of a fixed depth budget, it is interesting to ask what quantum algorithm is best suited to maximizing fidelity with the exactly evolved state. In this work we develop algorithmic approaches to this problem and explore the various trade-offs between the quantum resources involved. |
Md Faisal Alam; Bryan Clark; |
| 157 | Variational Quantum Algorithms for Semidefinite Programming Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose variational quantum algorithms for approximately solving SDPs. |
Dhrumil Patel; Patrick Coles; Mark Wilde; |
| 158 | Exploring The Role of Parameters in Variational Quantum Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will explain a way to analyze the impact of the parametrization in variational quantum algorithms (VQAs) on the size of the solution space spanned by their parameters. |
Abhinav Anand; Sumner Alperin-Lea; Alexandre Choquette; Alán Aspuru-Guzik; |
| 159 | Accurately Solving Linear Systems with Quantum Oracles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To accurately and efficiently solve LSs using QLSA and QTA algorithms, we propose an Iterative Refinement method (IRM) which uses limited-precision quantum oracles iteratively to improve dependence on precision to logarithmic. |
Mohammadhossein Mohammadisiahroudi; Ramin Fakhimi; Brandon Augustino; Tamás Terlaky; Giacomo Nannicini; |
| 160 | Next Generation Universal Trapped-ion Quantum Computing System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we discuss progress of commissioning the second-generation trapped-ion universal quantum computer. |
Liudmila Zhukas; Debopriyo Biswas; Yichao Yu; Bahaa Harraz; Keqin Yan; Vivian Zhang; Crystal Noel; Alexander Kozhanov; Christopher Monroe; |
| 161 | Coherent Control of Trapped Ion Qubits with Localized Electric Fields Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a new method for parallel coherent control of trapped ion qubits in separate interaction zones by simultaneously applying an electric field and a spin-dependent gradient. |
Maciej Malinowski; Raghavendra Srinivas; Clemens Loschnauer; Amy Hughes; Rustin Nourshargh; Vlad Negnevitsky; David Allcock; Steven King; Clemens Matthiesen; Thomas Harty; Chris Ballance; |
| 162 | QSCOUT: An Open Quantum Computing Testbed with Low-Level Access to The Hardware and Software (Part I) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Distinct from most commercial platforms, we offer users flexible and transparent control over the qubits as well as the ability to craft gates at the fundamental pulse level. |
Ashlyn Burch; Christopher Yale; Matthew Chow; Joshua Goldberg; Megan Ivory; Daniel Lobser; Benjamin Morrison; Melissa Revelle; Kenneth Rudinger; Antonio Russo; Jay Van Der Wall; Andrew Landahl; Susan Clark; |
| 163 | QSCOUT: Continuously Parameterized Mølmer-Sørensen Gates for Quantum Computing Circuits (Part II) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In one collaboration, we use the gates for coherent error injection to investigate error characterization and mitigation with hidden inverses. |
Christopher Yale; Ashlyn Burch; Matthew Chow; Megan Ivory; Daniel Lobser; Melissa Revelle; Swarnadeep Majumder; Titus Morris; Raphael Pooser; Ryan Shaffer; Hang Ren; Emiliia Dyrenkova; Hartmut Haeffner; Susan Clark; |
| 164 | Controlled Carbon Contamination of A Surface Ion Trap Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Electric field noise is an important error source for high-fidelity operation of ion trap quantum processors. This noise is orders of magnitude larger than expected from known … |
Benjamin Saarel; |
| 165 | Towards Motional Mode Engineering in A Long Trapped Ion String Using Optical Tweezers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present experimental work performed in a cryogenic apparatus exploiting a segmented-electrode ion trap architecture. |
Roland Matt; Jeremy Flannery; Luca Huber; Robin Oswald; Jonathan Home; |
| 166 | Reconfigurable Single Ion Addressing System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The ability to scale QIP to larger systems relies on the individual control of qubits in a multi-qubit register with small crosstalk. Towards this goal, we have designed a novel single ion addressing scheme that allows reconfigurable and parallel control of single and multi qubit gates across a chain of trapped ions using Raman transitions. |
Nicole Greene; Elia Perego; Hartmut Haeffner; |
| 167 | A Trapped Ion Computing Platform with Software-Tailored Architecture for Quantum Co-design Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will discuss progress toward the project’s goal of realizing a 32-qubit, fully-connected quantum computer, based on Yb-171 ions and available to collaborating universities through an easily programmable software interface. |
Marissa Donofrio; Jacob Whitlow; Tianyi Chen; Samuel Phiri; Junki Kim; Leon Riesebos; Bradley Bondurant; Mark Kuzyk; Kenneth Brown; Jungsang Kim; |
| 168 | Error Correction with Sympathetically Cooled Yb+ Ions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on progress towards performing multiple rounds of fault-tolerant error correction using a chain of Yb + ions. |
Marko Cetina; Lei Feng; Tianyi Wang; Or Katz; Christopher Monroe; Kenneth Brown; Jungsang Kim; Andrew Van Horn; Qingfeng Wang; Crystal Noel; |
| 169 | High-Field Qubits in Compact Penning Ion Traps Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Ensembles of trapped atomic ions are a resource for experimental quantum sensing, simulation, and computation. The ions’ charge allows for tight confinement within the static or … |
Brian Sawyer; Brian McMahon; Creston Herold; Kevin Battles; |
| 170 | Towards Quantum Error Correction with Dual Isotopes in A Cryogenic Trapped-Ion Experiment Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose and demonstration experiments towards using two isotopes of calcium ions for the purpose of data and ancilla qubits. |
Jeremy Flannery; Roland Matt; Luca Huber; Robin Oswald; Jonathan Home; |
| 171 | Frequency-robust Mølmer–Sørensen Gates Via Motional Mode Balancing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A variety of techniques have been developed to provide frequency robustness of a few kHz to gate performance, but they typically require optimizing a large set of pulse-shape parameters. In this talk, we introduce a technique that extends this range of robustness by an order of magnitude without requiring a many-parameter optimization process. |
Brandon Ruzic; Matthew Chow; Ashlyn Burch; Daniel Lobser; Melissa Revelle; Joshua Wilson; Christopher Yale; Susan Clark; |
| 172 | Making Predictions in A Quantum World Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will review an experimentally feasible procedure for converting a quantum state into a succinct classical description of the state, its classical shadow. |
John Preskill; |
| 173 | On The Complexity of Implementing Trotter Steps Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop methods to perform faster Trotter steps with complexity sublinear in the number of terms. |
Yuan Su; |
| 174 | Algebraic Techniques for Quantum Chemistry on A Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will illustrate how the Hamiltonian partitioning can be used to improve performance of the Variational Quantum Eigensolver and Quantum Phase Estimation algorithms. |
Artur Izmaylov; |
| 175 | Quantum Simulations of The Standard Model Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will give an overview of the state-of-the-art of quantum simulations of lattice gauge theories and neutrino systems, their unique aspects along with their connections with simulations in other research areas, estimates of quantum resource, and outline of the exciting road ahead. |
Martin Savage; |
| 176 | Simulating One-dimensional Quantum Chromodynamics on A Quantum Computer:Real-time Evolutions of Tetraquarks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantum computers can solve problems for which well established QCD methods are inapplicable, such as real-time evolution. We take a key step in exploring this possibility by performing a realtime evolution of tetraquark physics in one-dimensional SU(3) gauge theory on a superconducting quantum computer. |
Christine Muschik; |
| 177 | Contextual Subspace Variational Quantum Eigensolver Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe the contextual subspace variational quantum eigensolver (CS-VQE), an approximation method based on the standard variational quantum eigensolver (VQE). |
Peter Love; William Kirby; Andrew Tranter; Alexis Ralli; Timothy Weaving; Peter Coveney; |
| 178 | Characterization of Variational Quantum Algorithms Using Free Fermions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study variational quantum algorithms from the perspective of free fermions. |
Gabriel Matos; Chris Self; Konstantinos Meichanetzidis; Zlatko Papic; Henrik Dreyer; |
| 179 | How Well Does The Variational Quantum Eigensolver Algorithm Perform for A Random Fermionic Hamiltonian? Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Given a random q-local fermionic Hamiltonian, how well does the Variational Quantum Eigensolver (VQE) algorithm perform? In this talk, we propose field theory techniques as a novel tool to answer this question in the limit of large N, where N is the number of fermions. |
Thomas Scaffidi; Arijit Haldar; Omid Tavakol; |
| 180 | A Variational Quantum-classical Ansatz to Study Quantum Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we present our recent results on the simulation of quantum systems using a variational mixed quantum-classical ansatz. |
Stefano Barison; Filippo Vicentini; Giuseppe Carleo; |
| 181 | Quantum-Selected Configuration Interaction: Exact Diagonalization of Hamiltonians in A Subspace Selected By Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a new hybrid quantum-classical algorithm for calculating the ground- and excited-state energies of molecular Hamiltonians. |
Keita Kanno; Masaya Kohda; Ryosuke Imai; Sho Koh; Yuya Nakagawa; |
| 182 | Quantum Simulations of Fermionic Hamiltonians with Efficient Encoding and Ansatz Schemes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a computational protocol for quantum simulations of Fermionic Hamiltonians on a quantum computer, enabling calculations which were previously not feasible with conventional encoding and ansatses of variational quantum eigensolvers (VQE). |
Benchen Huang; Nan Sheng; Marco Govoni; Giulia Galli; |
| 183 | Polyhedral Structure of Penalty Constants in Quadratic Unconstrained Binary Optimization and Applications to Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will present a polyhedral characterization of the penalty constants that arise when penalization methods are used to reformulate linear and quadratic integer programs as QUBO problems. |
Rodolfo Alexander Quintero Ospina; Luis Zuluaga; Tamás Terlaky; Juan Vera; |
| 184 | Construction of Anti-Symmetrized Variational Quantum States with Real Space Representation on Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a method to construct an anti-symmetrized variational quantum state based on a real space basis. |
Takahiro Horiba; Soichi Shirai; Hirotoshi Hirai; |
| 185 | Power Flow Contingency Analysis with NISQ-era Hybrid Quantum Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a path towards a quantum advantage in utilities security through a hybrid quantum-classical algorithm for performing power system contingency analysis. |
Palash Goiporia; Michael Perlin; Pranav Gokhale; Frederic Chong; |
| 186 | Quantum Approximate Optimization Algorithm with Sparsified Phase Operator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using the MaxCut problem as the target, we demonstrate numerically that an easier way to implement an alternative phase operator can be used in lieu of the phase operator encoding the objective function, as long as the ground state is the same. |
Xiaoyuan Liu; Ruslan Shaydulin; Ilya Safro; |
| 187 | Circuit Knitting Toolbox and Quantum Serverless Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Along that line of effort, 2 supporting solutions were developed: circuit knitting toolbox and quantum serverless framework. |
Iskandar Sitdikov; |
| 188 | Virtual Two-qubit Gates Realized By Quasi-probability Sampling of Single-qubit Operations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: They are, however, often more challenging to implement experimentally than single qubit gates and also constrained by the physical connectivity of qubits. To aid this problem on the software side, we describe a strategy to decompose a two-qubit gate by quasi-probability sampling of single-qubit operations. |
Kosuke Mitarai; |
| 189 | Electronic and Optical Properties of NV Center in Diamond for Sensing Applications: First Principles Density Functional Theory and Experimental Approach Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work presents computational and experimental studies on electronic and optical properties of bulk diamond with N and NV defects. |
Yuhua Duan; Hari Paudel; Scott Crawford; Gary Lander; |
| 190 | Bath-state-dependent Quantum Phase on A Single NV Center Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use the modified NV center evolution to detect the polarization of the bath during phase-resolved Hahn echo sequences. |
Benjamin Soloway; Paul Jerger; Yuxin Wang; Mykyta Onizhuk; Michael Solomon; Christopher Egerstrom; F. Joseph Heremans; Giulia Galli; Aashish Clerk; David Awschalom; |
| 191 | Environmental Control of Quantum Sensors: The Case of Nitrogen-vacancy Centers in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we develop realistic models of the diamond-solvent interfaces to elucidate new sensing applications for the NV center, which are based on the reversible variations in the surface potential. |
Adam Gali; Anton Pershin; Péter Udvarhelyi; |
| 192 | Probing Metal Thin Films with NV-centers in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This study presents an NV ensemble with optimized parameters for magnetic resonance spectroscopy on thin metal films. |
Joachim Leibold; Dominik Bucher; Kristina Liu; Hans Hübl; Matthias Althammer; |
| 193 | All-optical, Microwave-free NV-Diamond Magnetometer for High Magnetic Field Environment Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, this technique becomes technically challenging under an environment with a Tesla-scale magnetic field or extreme conditions that prohibit the usage of microwave. By leveraging the effect that an off-axis magnetic field to the NV axis quenches its emitted photoluminescence, we present an all-optical, microwave-free broadband quantum diamond magnetometer. |
Xiechen Zheng; Jeyson Támara-Isaza; Kristine Ung; Connor Hart; Matthew Turner; Ronald Walsworth; |
| 194 | Interfacing Biomolecules with Coherent Quantum Sensors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In my talk, I will discuss the development and application of novel quantum metrological techniques that enable the study of biological systems in a new regime. |
Peter Maurer; |
| 195 | Resonant Optical Excitation for NV-Based Magnetometry at Cryogenic Temperatures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we introduce a novel approach to NV sensing that benefits from the atom-like, spin-state-resolved optical transitions shown by NVs at low temperatures. |
Richard Monge; Tom Delord; Carlos Meriles; |
| 196 | Low Temperature Photo-physics of Single NV Centers in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the magnetic field dependent photo-physics of individual Nitrogen-Vacancy (NV) color centers in diamond under cryogenic conditions. |
Jodok Happacher; Juanita Bocquel; David Broadway; Hossein Dinani; Jeronimo Maze; Patrick Maletinsky; |
| 197 | All Optical Detection of Electric Fields Using Single NV Centers in Diamond at Cryogenic Temperatures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe charge dynamics in the diamond host, including capacitive and screening effects over a large span of frequencies, with a strong influence of the photoionization of nearby defects on the intrinsic electric field. |
Juanita Bocquel; Jodok Happacher; David Broadway; Patrick Maletinsky; |
| 198 | AC Sensing of NV Centers Under Hydrostatic Pressure Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will discuss various pulse sequences including double quantum Ramsey and Echo, and how hydrostatic pressure affects the behavior of the NV Center. |
Chris McPherson; Rashad Kadado; Zhipan Wang; Nicholas Curro; William Casey; |
| 199 | Probing The Evolution of Electron Spin Wavefunction of The Nitrogen Vacancy (NV) Center in Diamond Via Pressure Tuning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we use pressure as a tuning method and a nuclear spin as an atomic scale probe to monitor the hyperfine structure of negatively charged nitrogen vacancy (NV) centers in diamonds under pressure. |
Kin On Ho; Man Yin Leung; Prithvi Reddy; Jianyu Xie; King Cho Wong; Yaxin Jiang; Wei Zhang; King Yau Yip; Wai Kuen Leung; Yiu Yung Pang; King Yiu Yu; Swee Kuan Goh; Marcus William Doherty; Sen Yang; |
| 200 | Electric-Field-Induced Coherent Control of Nitrogen Vacancy Centers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In addition, current-induced Joule heating inherent to this approach can generate substantial thermal noise, resulting in decoherence of NV centers. To address these issues, here we report coherent control of NV center spins via spatially localized MW fields generated by a proximate magnetic tunnel junction (MTJ) device with voltage controlled magnetic anisotropy (VCMA). |
Gerald Yan; Senlei Li; Tatsuya Yamamoto; Mengqi Huang; Nathan McLaughlin; Takayuki Nozaki; Hailong Wang; Shinji Yuasa; Chunhui Du; |
| 201 | Experimental Demonstration of Mirror Circuit Fidelity Estimation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In arXiv:2204.07568, we introduced mirror circuit fidelity estimation (MCFE), a novel technique for quantifying the fidelity of quantum circuit executions on a specific quantum computer. In this work, we present the experimental demonstration of MCFE and compare its performance with similar techniques, like direct fidelity estimation. |
Fernando Calderon-Vargas; Stefan Seritan; Timothy Proctor; Mohan Sarovar; |
| 202 | Estimating The Error Budgets of Quantum Gates in Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: As an alternative, we have developed an approach tailored to superconducting quantum hardware, based on detailed simulations of the relevant noise processes and Bayesian regression. |
Miha Papic; Inés de Vega; |
| 203 | K-body Pauli Error Estimation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we build on that work, seeking to retain a practical implementation but removing measurement error and increasing relative precision; albeit at the cost of limiting the recovery to Pauli error terms that act non-trivially on only k or fewer qubits. |
Robin Harper; |
| 204 | A Physics-based Machine Learning Approach to Quantum Device Characterization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we use existing scalable methods for estimating process fidelity to train neural networks to predict the process fidelity of unknown circuits of interest. |
Daniel Hothem; Kevin Young; Timothy Proctor; Tommie Catanach; |
| 205 | Reinforcement Learning for Calibrating Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will outline a simple example of how calibration of a quantum device can be cast as an environment/agent/reward problem that yields to techniques from deep reinforcement learning. |
Kevin Young; |
| 206 | Error Mitigation Via Adaptive Calibrations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we show how algorithms such as iterative phase estimation, entangled 2-qubit states and iterative state preparation techniques can be used as highly-sensitive probes to significantly speed up calibration and characterization workflows for superconducting qubit platforms. |
Yonatan Cohen; Lior Ella; |
| 207 | Characterizing Continuously Parameterized Gates with Gate Set Tomography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a method for GST of gate sets containing continuously parameterized gates. |
Jordan Hines; Corey Ostrove; Stefan Seritan; Erik Nielsen; Kevin Young; Robin Blume-Kohout; Timothy Proctor; |
| 208 | Efficient Experimental Verification of Continuously-parameterized Quantum Gates Via Randomized Analog Verification Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate the application of the randomized analog verification (RAV) procedure for efficient verification of continuously-parameterized quantum gates. |
Ryan Shaffer; Hang Ren; Emiliia Dyrenkova; Christopher Yale; Daniel Lobser; Ashlyn Burch; Matthew Chow; Melissa Revelle; Susan Clark; Hartmut Haeffner; |
| 209 | Optimized Bayesian System Identification in Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a closed-loop Bayesian learning algorithm for estimating multiple unknown parameters in a dynamical model, using optimised experimental “probe” controls and measurement. |
Ashish Kakkar; Thomas Stace; Pranav Mundada; Yuval Baum; Jiayin Chen; Li Li; Victor Perunicic; Michael Hush; Ting Rei Tan; Christophe Valahu; Michael Biercuk; |
| 210 | Measuring Progress Towards Useful Quantum Computation Using Precision Benchmarks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present methods for learning a quantum computer’s capability that are efficient and scalable. |
Timothy Proctor; Stefan Seritan; Daniel Hothem; Kenneth Rudinger; Andrew Baczewski; Mohan Sarovar; Kevin Young; Robin Blume-Kohout; |
| 211 | Autonomous Calibration of Quantum Processors with Bayesian Filtering Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Classic nonlinear Kalman filters provide one possible framework, and we have found that quantum gate set tomography is amenable to estimation with the extended and sigma point filters, achieving fits comparable with maximum likelihood estimation in simulation. |
John Marceaux; Kevin Young; |
| 212 | Designing Quantum Gates Using Deep Reinforcement Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we task a deep reinforcement learning agent to interact with a simulated quantum environment of superconducting transmon qubits to directly design quantum gates suitable to the true dynamics. |
Ho Nam Nguyen; Marin Bukov; Markus Schmitt; Felix Motzoi; Mekena Metcalf; |
| 213 | Automated Model Selection for Gate Set Tomography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To that end, we present algorithms for performing automated model selection, allowing the construction of reduced models without needing a priori knowledge of device physics. |
Stefan Seritan; Kenneth Rudinger; Timothy Proctor; Robin Blume-Kohout; |
| 214 | KQCircuits: An Open-source Package for Automating Design of Superconducting Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present KQCircuits, a GPLv3-licensed tool developed at IQM Finland, that enables designing state-of-the-art quantum circuits and processors with relative ease, whilst reducing costly human errors. |
Andrew Guthrie; Alessandro Landra; Johannes Heinsoo; David Janzso; Máté Jenei; Janne Kotilahti; Caspar Ockeloen-Korppi; Jukka Räbinä; Niko Savola; Pavel Smirnov; Kristinn Juliusson; |
| 215 | Fluxonium Qubit Design and EPR Analysis Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will show our design and simulation results. |
Figen Yilmaz; Siddharth Singh; Taryn Stefanski; Martijn F. S. Zwanenburg; Christian Andersen; |
| 216 | Efficient Design and Simulation of Parametrically Coupled Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We seek a means to optimize the cancellation of unwanted static interactions alongside adequate mode tuneability to have strong parametric coupling rates. |
Zachary Parrott; Tongyu Zhao; Kaixuan Ji; Katarina Cicak; Kristen Genter; José Estrada Gonzalez; Raymond Simmonds; |
| 217 | Analysis of Arbitrary Superconducting Quantum Circuits Accompanied By A Python Package: SQcircuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: As is often the case with quantum descriptions of multi-coordinate systems, the complexity rises rapidly with the number of variables. Therefore, we introduce a set of coordinate transformations with which we can find bases to diagonalize the Hamiltonian efficiently. |
Taha Rajabzadeh; Alexander McKeehan; Zhaoyou Wang; Nathan Lee; Takuma Makihara; Yudan Guo; Amir Safavi-Naeini; |
| 218 | Loss Estimation Using Energy Participation Ratio in KQCircuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, we present a new addition to KQCircuits (KQC) [1]. |
Niko Savola; Alessandro Landra; Jukka Räbinä; Eelis Takala; Janne Kotilahti; David Janzso; Pavel Smirnov; Vladimir Milchakov; Kristinn Juliusson; Sinan Inel; Máté Jenei; Johannes Heinsoo; Caspar Ockeloen-Korppi; |
| 219 | Simulation of Magnetic Field and Current Density Profile for Flux-tunable Superconducting Qubit Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We adopt a finite-element method [1] to solve the Maxwell-London equations to simulate magnetic field and current distributions in superconducting qubit devices. |
Tianpu Zhao; Xinyuan You; Shashwat Kumar; Xanthe Croot; Andrew Houck; Jens Koch; |
| 220 | Machine Learning-Based Predictive Model for Designing Transmon Qubits in Superconducting Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we attempt to predict the characteristics of individual transmon qubits with a machine learning-based approach based on the simulation data collected with Qiskit Metal and ANSYS Electronics. |
Ferris Prima Nugraha; QIMING SHAO; |
| 221 | Band-stop Filters for Protecting Parametric Operations in Superconducting Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will discuss our filter design strategy and show experimental results. |
Kaixuan Ji; José Estrada Gonzalez; Zachary Parrott; Tongyu Zhao; José Aumentado; Raymond Simmonds; |
| 222 | Superconducting Resonators with Voltage-controlled Frequency and Nonlinearity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By galvanically connecting a gated InAs-Al Josephson junction to a coplanar waveguide resonator, we demonstrate the use of a superconducting element with wideband gate-tunability. |
William Strickland; Bassel Elfeky; Joseph Yuan; William Schiela; PENG YU; Dylan Langone; Maxim Vavilov; Vladimir Manucharyan; Javad Shabani; |
| 223 | Post-fabrication Resonator Frequency Trimming Enabling Fast, High-fidelity Dispersive Readout of Transmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a practical method allowing accurate trimming of the bare frequency of either resonator as gleaned necessary from initial device characterisation. |
Santiago Valles-Sanclemente; Sean van der Meer; Matvey Finkel; Christos Zachariadis; Thijs Stavenga; Marc Beekman; Nadia Haider; Leonardo DiCarlo; |
| 224 | A Power-meter Based on Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this contribution, we present a device consisting of a superconducting transmon qubit strongly coupled to a transmission line that can be operated as a power sensor. |
Danilo Labranca; Adam Sirois; Manuel Castellanos-Beltran; Peter Hopkins; David Olaya; John Biesecker; Andrea Giachero; |
| 225 | Spectroscopic Method for Measuring The Number of Photons in Superconducting Kerr Parametric Oscillators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a feasible method to estimate the photon number of the KPO. |
keisuke matsumoto; Aiko Yamaguchi; Tsuyoshi Yamamoto; Shiro Kawabata; Yuichiro Matsuzaki; |
| 226 | Characterizing Polariton States in The Non-Dispersive Regime of CQED Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe the effects of the non-dispersively coupled higher transmon levels in our system. |
Arvind Mamgain; Samarth Hawaldar; Athreya Shankar; Baladitya Suri; |
| 227 | Analysing Polariton States in The Non-Dispersive Regime of CQED Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we theoretically study a driven transmon -resonator system outside the dispersive regime. |
Samarth Hawaldar; Arvind Mamgain; Athreya Shankar; Baladitya Suri; |
| 228 | Design of A Current-biased Tunable Coupler Integrated with Superconducting 3D-cavities Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present the design of a current-controlled superconducting coupling element based on an inductive Wheatstone bridge. |
Eva Gurra; Ziyi Zhao; Konrad Lehnert; |
| 229 | A High-fidelity Universal Quantum Control for Electron Spin Qubits in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate a resonantly driven controlled-NOT gate with a fidelity of 99.5%, along with single-qubit gate fidelities of 99.8% [4]. |
Akito Noiri; |
| 230 | Residual Exchange Interaction in Linear Spin Qubit Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The fidelity of quantum gates is limited in the presence of residual exchange interaction. Therefore, we investigate the time evolution of single-qubit and two-qubit gates with residual exchange. |
Irina Heinz; Adam Mills; Jason Petta; Guido Burkard; |
| 231 | Fabrication and Characterization of Si/SiGe Quadruple Quantum Dot DevicesS. Oh1, N. Leclerc1, N. D. Johnson1, M. Pushp1, and A. J. Sigillito11Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we describe a four-qubit quantum processor fabricated at the University of Pennsylvania based on designs reported in the past [4]. |
seongwoo oh; Nima Leclerc; Noah Johnson; Mridul Pushp; Anthony Sigillito; |
| 232 | Bichromatic Rabi Control of Semiconductor Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While established in small qubit systems, it remains unclear how to perform selective qubit rotations in scalable qubit architectures with shared control terminals. Here, we experimentally demonstrate the coherent bichromatic Rabi control of hole spin qubits, as a method that may overcome this challenge. |
Valentin John; Francesco Borsoi; Chien-An Wang; Zoltán György; Gábor Széchenyi; Floor Van Riggelen; William Iain Lawrie; Amir Sammak; Nico Hendrickx; Giordano Scappucci; András Pályi; Menno Veldhorst; |
| 233 | Characterizing Crosstalk in Simultaneously Driven Si/SiGe Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Spin qubits fabricated in isotopically enriched Si/SiGe heterostructures are promising candidates for building reliable and scalable quantum computing systems. Recent experiments … |
Zhaoyi (Joy) Zheng; Adam Mills; Irina Heinz; Guido Burkard; Jason Petta; |
| 234 | Modular Nanomagnet Design for Spin Qubits Confined in A Linear Chain Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a design aimed to drive spin qubits arranged in a linear chain with strong lateral confinement, such as in a silicon finFET or nanowire architecture. |
Gian Salis; Rolf Allenspach; Michele Aldeghi; |
| 235 | Resistive Interconnects for Spin Transfer in Silicon Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate a simpler protocol, in which a resistive top gate connects remote quantum dots. |
Christopher White; Michael Gullans; Anthony Sigillito; |
| 236 | Probing Resonating Valence Bonds on A Programmable Germanium Quantum Simulator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we introduce quantum simulation using hole spins in germanium quantum dots. |
Chien-An Wang; Corentin Déprez; Hanifa Tidjani; William Iain Lawrie; Nico Hendrickx; Amir Sammak; Giordano Scappucci; Menno Veldhorst; |
| 237 | Time-crystalline Behavior in Central Spin Models with Heisenberg Interactions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we show how to create time-crystal-like phases in central-spin models with Heisenberg interactions, which can be realized in a single dot or defect system or star-shaped dot arrays. |
Rafail Frantzeskakis; John Van Dyke; Leon Zaporski; Dorian Gangloff; Claire Le Gall; Mete Atatüre; Sophia Economou; Edwin Barnes; |
| 238 | Quantum Simulation of Exciton Transport in A Germanium 4×2 Quantum Dot Array Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show first results of exciton transport through a Germanium 4×2 quantum dot array using the Coulomb drag effect. |
Pablo Cova Fariña; Tzu-Kan Hsiao; Xin Zhang; Cornelis van Diepen; Stefan Oosterhout; Daniel Jirovec; Amir Sammak; William Iain Lawrie; Chien-An Wang; Giordano Scappucci; Menno Veldhorst; Lieven Vandersypen; |
| 239 | Spin State Transfer in Fixed Exchange Quantum Dot Arrays Using Cartan Decomposition Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we extend our previous results for double- and triple-dot systems, and describe a method for implementing spin state transfer in long chains of singly-occupied quantum dots in a nonadiabatic manner. |
David Kanaar; Utkan Güngördü; Jason Kestner; |
| 240 | Quantum State Transfer in Interacting Multiple-Excitation Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We extend the study of quantum state transfer to three interacting multiple-excitation models: Jaynes-Cummings-Hubbard, Hubbard, and Periodic-Anderson. |
Alexander Yue; |
| 241 | Dynamical Quantum Phase Transitions in A Silicon Spin Qubit Array Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In a recent publication, our group introduced new methods for initializing, controlling, and measuring spin qubits in a six-dot array demonstrating operation with a low error rate [1]. |
Eline Raymenants; Oriol Pietx-Casas; Brennan Undseth; Stephan Philips; Mateusz Madzik; Sergey Amitonov; Larysa Tryputen; Amir Sammak; Albert Schmitz; Shavindra Premaratne; Anne Matsuura; Giordano Scappucci; Lieven Vandersypen; |
| 242 | Strongly Correlated Fluids of Light in A Bose-Hubbard Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will present our recent work in constructing low-entropy quantum fluids of light by employing particle-resolved assembly combined with robust adiabatic preparation [1]. |
Andrei Vrajitoarea; |
| 243 | Many-body Ramsey As A Probe of Superfluid Compressibility in The Bose-Hubbard Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Superconducting circuits are an ideal platform for applying the tools of quantum computing to experiments probing many-body physics. We engineer a 1D Bose Hubbard chain using … |
Gabrielle Roberts; Andrei Vrajitoarea; Brendan Saxberg; Margaret Panetta; Jonathan Simon; David Schuster; |
| 244 | Programmable Heisenberg Interactions Between Floquet Qubits: Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: From a broader perspective, our work provides compelling avenues for future exploration of quantum electrodynamics and optimal control using the Floquet framework. |
Yosep Kim; Long Nguyen; Akel Hashim; Noah Goss; Brian Marinelli; Bibek Bhandari; Debmalya Das; Ravi Naik; John Mark Kreikebaum; Andrew Jordan; David Santiago; Irfan Siddiqi; |
| 245 | Programmable Heisenberg Interactions Between Floquet Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, by encoding computational information onto frequency-modifiable Floquet states, we demonstrate an XXZ Heisenberg interaction model with fully adjustable anisotropy between statically coupled fixed-frequency transmon circuits. |
Long Nguyen; Yosep Kim; Akel Hashim; Noah Goss; Brian Marinelli; Bibek Bhandari; Debmalya Das; Ravi Naik; John Mark Kreikebaum; Andrew Jordan; David Santiago; Irfan Siddiqi; |
| 246 | Chiral Coupling of A Superconducting Artificial Atom to A 1-dimensional Waveguide Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report on the realization of a superconducting artificial atom with unidirectional strong coupling to a waveguide. |
Frank Yang; Chaitali Joshi; Mohammad Mirhosseini; |
| 247 | Probing Many-Body Correlations in Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will describe superconducting circuit designs capable of accessing many-body correlation functions. |
Kamal Sharma; Wade DeGottardi; |
| 248 | Effect of Chaos on Gate Fidelity in Coupled Transmon Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we characterize the dynamical effects of chaos on the quantum gates applied to the transmons. |
Sanket Tripathy; Baladitya Suri; |
| 249 | Quantum Emulation of The Transient Dynamics in The Multistate Landau-Zener Model Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we study experimentally the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity. |
Martin Weides; Alexander Stehli; Jan Brehm; Tim Wolz; Andre Schneider; Alexey Ustinov; Hannes Rotzinger; |
| 250 | Compact Description of Quantum Phase Slips and The Fate of The Aharonov–Casher Effect Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we focus in particular on circuits with multiple QPS junctions, where the observed offset-charge dispersion is believed to emerge due to a quantum circuit version of the Aharonov-Casher effect: a coherent interference between phase slips occurring on neighbouring junctions. |
Christina Koliofoti; Roman-Pascal Riwar; |
| 251 | 3-Qubit Parametric Interaction As A Tool for Quantum Simulation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we propose and implement a parametrically activated 3-qubit interaction in a circuit QED architecture, as the simplest building block for simulating LGTs in a superconducting photonic lattice. |
Jamal Busnaina; Cindy Yang; Ibrahim Nsanzineza; Christopher Wilson; |
| 252 | Hamiltonian Extrema of An Arbitrary Flux-biased Josephson Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Flux-biased loops hosting one or more Josephson junctions are ubiquitous elements in quantum information processing based on superconducting hardware. These circuits can be tuned … |
Alessandro Miano; Vidul Joshi; Wei Dai; Gangqiang Liu; Pranav Parakh; Luigi Frunzio; Michel Devoret; |
| 253 | Generalising Beenakker Equation to Take Into Account Evanescent Modes Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Superconductor–normal-metal–superconductor Josephson junctions have been examined extensively in past years. In particular, the case where the normal region is modelled by an … |
Daniel Kruti; Roman-Pascal Riwar; |
| 254 | Defects in 2D TMDs for Quantum Sensing Applications Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We performed structural and optical characterization of exfoliated and Chemical Vapor Deposition (CVD) grown 2D TMD samples. |
Birol Ozturk; Pranish Shrestha; Mya Merritt; Rohit Srivastava; Ramesh Budhani; |
| 255 | Studying Spin States of Single Nano-rods of [Fe(Htrz)2(trz)](BF4) Spin-crossover Molecules Using Diamond Quantum Sensing Microscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we use nitrogen vacancy (NV) based magnetometry to image individual Fe(II) triazole SCO nano-rods of size varying from 200 to 1000 nm [3]. |
Abdelghani Laraoui; Suvechhya Lamichhane; Kayleigh McElveen; Adam Erickson; Shuo Sun; Rupak Timalsina; Yinsheng Guo; Rebecca Lai; Sy-Hwang Liou; |
| 256 | ESR Spectroscopy of A Single Er3+ Ion in CAW04 Using Fluorescence Signal Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report a new method for the detection of single electron spins at millikelvin temperatures based on a microwave photon counter. |
Léo Balembois; |
| 257 | Electrons Spin Detection Using A Superconducting Flux Qubit with A Circuit-QED Architecture Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The technique has been applied to the detection of magnetization from electrons in solid state material and electron spin resonance (ESR) spectroscopy. |
Hiraku Toida; Kosuke Kakuyanagi; Leonid Abdurakhimov; Shiro Saito; |
| 258 | Three-wave Mixing Traveling-wave Parametric Amplifier with Periodic Variation of The Circuit Parameters Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report the implementation of a traveling-wave parametric amplifier (TWPA) with magnetically biased SNAIL loops that provide three-wave mixing (3WM). |
Anita Fadavi Roudsari; Daryoush Shiri; Hampus Renberg Nilsson; Giovanna Tancredi; Amr Osman; Ida-Maria Svensson; Marina Kudra; Marcus Rommel; Jonas Bylander; Vitaly Shumeiko; Per Delsing; |
| 259 | Temperature Sensing Using A Hybrid Quantum System Consisting of Nano-diamonds and A Superconducting Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: A small temperature sensor has a small heat capacity and a small amount of heat flowing from the measured system into the thermometer. Therefore, the response of the thermometer … |
kosuke kakuyanagi; Hiraku Toida; Leonid Abdurakhimov; Shiro Saito; |
| 260 | Ultimate Precision Limit of Noise Sensing and Dark Matter Search Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a ‘nulling’ measurement (squeezing and photon counting) to achieve the optimal performances. |
Haowei Shi; Quntao Zhuang; |
| 261 | Phase Error Model for Quantum Multiphase Estimation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We derive a phase error model that evaluates the variance in multiphase estimation given a probe state and a measurement basis. |
Yi Teng; Samantha Davis; Volkan Gurses; Jean-Roch Vlimant; Maria Spiropulu; |
| 262 | Modeling Quantum Enhanced Sensing on A Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We developed two quantum circuit models to demonstrate the role of quantum mechanics and entanglement in modern precision sensors. |
Cindy Tran; |
| 263 | Simulating A Neutral Atom Open Quantum System with Tensor Network States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We model the density matrix of an open quantum system on a neutral atom array using different types of TNS, from matrix product operators (MPO) to matrix product density operators (MPDO). |
James Allen; Matthew Otten; Stephen Gray; Bryan Clark; |
| 264 | Efficient Tensor Network Simulation of Quantum Many-body Physics on Sparse Graphs Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study tensor network states defined on an underlying graph which is sparsely connected. |
Subhayan Sahu; Brian Swingle; |
| 265 | Quantum Computing and HPC Integration Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will present the current progress on the development of the various quantum simulators and future directions. |
Yuri Alexeev; Danylo Lykov; Minzhao Liu; William Berquist; |
| 266 | Mapping Multidimensional Chemical Dynamics Problems to A Family of Hybrid Quantum and Classical Computing Environments Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Despite ubiquitous applications of chemical dynamics simulations, the rendered computational cost grows exponentially with the degrees of freedom of a chemical system, limiting a … |
Anurag Dwivedi; Miguel Angel Lopez-Ruiz; Debadrita Saha; Philip Richerme; Srinivasan Iyengar; |
| 267 | Preparation of Strongly Correlated States in Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present how one can systematically prepare correlated many-body states in quantum circuits via recently developed amplitude amplification technique. |
Byungmin Kang; Vito Scarola; Kwon Park; |
| 268 | Large-Scale VQE Simulations with Tensor-Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we show that purely classical resources can be used to optimize quantum circuits in an approximate but robust manner. |
Abid Khan; Norm Tubman; Sohaib Alam; Bryan Clark; Wayne Mullinax; |
| 269 | TensorQC: Towards Scalable Quantum Classical Hybrid Compute Via Tensor Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work presents Ten- sorQC, which addresses the bottlenecks via tensor network based post-processing that minimizes the classical overhead by orders of magnitudes over prior parallelization techniques. |
Wei Tang; Margaret Martonosi; |
| 270 | Maximizing Success and Minimizing Resources: An Optimal Design of Hybrid Algorithms for NISQ Era Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we redesign the QAOA and VQE algorithm systematically to efficiently improve the success rate and accuracy while using minimal resources. |
Yulun Wang; Gavin Hartnett; Yuval Baum; |
| 271 | Entanglement Regularization in The Quantum Dynamics of Tensor Network States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using a TN approach, we present a mechanism for the controlled time-evolution of the nuclear degrees of freedom of multi-configurational chemical systems at a reduced storage and computational complexity. |
Miguel Angel Lopez-Ruiz; Anurag Dwivedi; Srinivasan Iyengar; |
| 272 | Time Evolution of Uniform Sequential Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present a polynomially scaling hybrid quantum-classical algorithm for time evolving a one-dimensional uniform system in the thermodynamic limit. |
Nikita Astrakhantsev; Sheng-Hsuan Lin; Adam Smith; Frank Pollmann; |
| 273 | Classical and Quantum Strategies to Boost Quantum Subspace Methods Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present classical and quantum strategies that aim to improve the energy approximations and convergence behavior of quantum subspace algorithms by improving the conditioning of the basis of expansion states through both implicit and explicit methods. |
Daan Camps; Yizhi Shen; Katherine Klymko; Norm Tubman; Roel Van Beeumen; |
| 274 | Many Body Green’s Function Using Variational Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a method to compute many-body real-time Green’s function using adaptive variational quantum dynamics simulation. |
Niladri Gomes; Lindsay Bassman; David Williams-Young; Wibe de Jong; |
| 275 | Quantum Chemistry Simulation of Ground- and Excited-state Properties of The Sulfonium Cation on A Superconducting Quantum Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, we combine a qubit reduction technique with variational and diagonalization quantum algorithms and use a sequence of error-mitigation techniques. |
Mario Motta; Gavin Jones; Julia Rice; Tanvi Gujarati; Rei Sakuma; Ieva Liepuoniute; Jeannette Garcia; Yu-ya Ohnishi; |
| 276 | Scaling and Performance Analysis of Variational Quantum Algorithms for Quantum Simulation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we introduce an approximate numerical scaling analysis strategy for VQA for quantum simulation and show the results of applying it to a selection of cases. |
Mario Ponce Martinez; Inés de Vega; Martin Leib; |
| 277 | Interpolation of Trotter Data for Eigenvalue and Expectation Value Estimation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we provide a paradigm-shifting approach in which we achieve a Õ(log 1/ε) cost scaling when estimating observables with a single ancillary qubit, where ε is the error on the observable from approximating the Hamiltonian dynamics. |
Gumaro Rendon; Nathan Wiebe; Jacob Watkins; |
| 278 | Efficient Calculation of Nuclear Forces on Noisy Intermediate-scale Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we show how to use noisy intermediate-scale quantum (NISQ) computers to extract nuclear forces and optimize the number of required samples from the quantum computer by using basis rotation groupings, importance sampling and fermionic shadows. |
Michael Streif; Thomas O’Brien; Nicholas Rubin; Raffaele Santagati; Yuan Su; William Huggins; Joshua Goings; Nikolaj Moll; Elica Kyoseva; Matthias Degroote; Christofer Tautermann; Joonho Lee; Dominic Berry; Nathan Wiebe; Ryan Babbush; |
| 279 | Efficient Simulation of Materials on Fault-tolerant Quantum Computers Using Translational Symmetries Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate how to construct qubitized phase estimation oracles using various block encodings that take advantage of translational symmetry leading to a savings inversely proportional to the number of k-points sampled. |
Nicholas Rubin; |
| 280 | Quantum Speedups for Computing Expectation Values and Partition Functions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present new advanced quantum algorithms for estimating fundamental statistics such as the mean of multivariate distributions or the partition function of Gibbs distributions. |
Yassine Hamoudi; |
| 281 | Universal Quantum Speedup for Branch-and-Bound, Branch-and-Cut, and Tree-Search Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Montanaro proposed a quantum algorithm with a near-quadratic speedup compared to classical Branch-and-Bound algorithms in the worst case, when every optimal solution is desired. |
Shouvanik Chakrabarti; Pierre Minssen; Romina Yalovetzky; Marco Pistoia; |
| 282 | Perturbation Theory with Quantum Signal Processing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we provide a quantum algorithm to obtain perturbative energies using quantum signal processing (QSP). |
Kosuke Mitarai; Wataru Mizukami; |
| 283 | Real-time Quantum Krylov Subspace Algorithms with Stochastic Compilation and Double Factorization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will discuss our recent work which introduces a new class of randomized quantum Krylov diagonalization (rQKD) algorithms which uses a combination of stochastic compilations strategies inspired by qDRIFT as well as low-rank double factorized Hamiltonian encoding strategies resulting in circuit depths with modest quantum resource requirements. |
Cristian Cortes; Nicholas Stair; jeffrey cohn; Mario Motta; Robert Parrish; |
| 284 | On Proving The Robustness of Algorithms for Early Fault-tolerant Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This motivates the development of quantum algorithms which are robust to some degree of error as well as methods to analyze their performance in the presence of error. We introduce a randomized algorithm for the task of phase estimation and give an analysis of its performance under two simple noise models. |
Peter Johnson; Amara Katabarwa; Rutuja Kshirsagar; |
| 285 | Lyapunov Control-inspired Quantum Algorithms for Ground State Preparation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, we introduce a generalized formulation of feedback-based quantum algorithms for preparing ground states of quantum systems in a manner that is optimization-free. |
James Larsen; Andrew Baczewski; Matthew Grace; Alicia Magann; |
| 286 | Modeling Quantum Algorithm Performance on Early Fault-Tolerant Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Hence, it is also important to analyze the cost of quantum error correction needed to achieve a certain level of performance on the quantum computer. Toward these goals, we develop a modularized framework to model the circuit-level noise, the algorithmic noise, the algorithm success probability, and the links between them. |
Qiyao Liang; Yiqing Zhou; Archismita Dalal; Peter Johnson; |
| 287 | Variational Optimization of PREPARE Circuit for Block-encoding Hamiltonians Without Ancillary Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose a method to construct a quantum circuit to prepare an arbitrary quantum state without using any additional ancilla qubit. |
Hayata Morisaki; Keisuke Fujii; Kosuke Mitarai; Yuya Nakagawa; |
| 288 | An Adaptive Quantum-phase-estimation Protocol for NISQ Hardware Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose an adaptive Bayesian protocol for near-term phase estimation, which shows high performance in the presence of noise. |
Joseph Smith; David Arvidsson-Shukur; Crispin Barnes; |
| 289 | Preparing Thermal States on Noiseless and Noisy Programmable Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The existing quantum algorithms either require quantum phase estimation rendering them impractical for current noisy hardware, or are variational which face obstacles such as initialization, barren plateaus, and a general lack of provable guarantee. We provide two quantum algorithms with provable guarantees to prepare thermal states on (near-term) quantum computers that avoid these drawbacks. |
Ramis Movassagh; Oles Shtanko; |
| 290 | Hybrid Atom — Rare-earth Ion Quantum Interfaces and Network Nodes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will present our results identifying the mode-matching conditions between a rubidium vapor cell and an erbium-doped crystal, where the former serves as a telecom single photon source via phase-matched four-wave mixing. |
Yuzhou Chai; Dahlia Ghoshal; Shihan Liu; Shankar G Menon; Noah Glachman; Shobhit Gupta; Matteo Pompili; Yizhong Huang; Haley Nguyen; Eilon Poem; Tian Zhong; Hannes Bernien; |
| 291 | Ytterbium Ion Trap Quantum Computing: The Current State-of-the-art Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an overview of contemporary quantum computing with ytterbium ion traps, placing the emphasis on industry implementations. |
Gavin Nop; Durga Paudyal; Jonathan Smith; |
| 292 | Intra-atomic Frequency Comb Based Photonic Quantum Memory Using Single-atom-cavity Setup Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a protocol for multi-mode photonic quantum memory using only a single-atom-cavity setup. |
Chanchal .; G.P. Teja; Sandeep Goyal; |
| 293 | Toward Development of A Quantum Transducer to Hybridize Superconducting and Ion Trap Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Due to the significant difference in mass and dimension, direct coupling between the macroscopic superconducting circuits and a microscopic atomic ion is either slow or far off-resonance. To tackle this critical issue, we propose applying circular Rydberg states of strontium (Sr) atoms hypersensitive to a microwave field to interact with the superconducting qubits. |
Yan Zhou; Trevor Taylor; Joshua Island; Clemens Heske; Bernard Zygelman; |
| 294 | Building A Quantum Repeater Using Optomechanical Oscillators As On-Demand Entanglement Sources Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose using an optomechanical oscillator, which produces a photon-phonon entangled pair, as a breakthrough on-demand EPR source. |
Eric Chatterjee; Daniel Soh; Matt Eichenfield; |
| 295 | Indistinguishable Photons from An Artificial Atom in Silicon Photonics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will present results on a new type of indistinguishable photon source in silicon photonics based on an artificial atom. |
Lukasz Komza; Polnop Samutpraphoot; Mutasem Odeh; Yu-Lung Tang; Milena Mathew; Jiu Chang; Alp Sipahigil; |
| 296 | Entangling Remote Microwave Quantum Computers with Hybrid Entanglement Swap and Variational Distillation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a continuous-variable entanglement-swap approach based on optical-microwave entanglement generation, which can boost the ultimate rate by two orders of magnitude at state-of-the-art parameter region, compared with traditional approaches. |
Bingzhi Zhang; JING WU; Linran Fan; Quntao Zhuang; |
| 297 | Continuous Variable Entanglement Between Microwave and Optics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate the deterministic preparation of an entangled microwave-optical state in the continuous variable domain that is squeezed 0.7 dB below the vacuum level. |
Rishabh Sahu; Liu Qiu; William Hease; Georg Arnold; Yuri Minoguchi; Peter Rabl; Johannes Fink; |
| 298 | Observation of Einstein-Podolski-Rosen Correlations Between Microwave and Optical Photons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report on the deterministic preparation of entanglement between microwave and optical fields in the continuous variable domain. |
Johannes Fink; Rishabh Sahu; Liu Qiu; William Hease; Georg Arnold; Yuri Minoguchi; Peter Rabl; |
| 299 | Detecting Entanglement in Two-mode Light States Using Generalized CHSH Inequality Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To improve the detection capabilities of the MZI-based CHSH inequality, we consider $n$ number of measurement settings of the interferometer in each lab and check for the maximum possible violations. |
MADHURA GHOSH DASTIDAR; Gniewomir Sarbicki; Vidya Praveen Bhallamudi; |
| 300 | Two-level Quantum Walkers on Directed Graphs: An Application to QRAM Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using a multi-particle continuous-time quantum walk with two internal states [1], we physically implement a quantum random access memory (qRAM). |
Ryo Asaka; Kazumitsu Sakai; Ryoko Yahagi; |
| 301 | Towards A Scalable QRAM Architecture Based on Coupled Bosonic Modes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we present a proposal for realizing QRAM based on an architecture of coupled bosonic modes. |
Daniel Weiss; Stijn de Graaf; Sophia Xue; Robert Schoelkopf; Shruti Puri; Steven Girvin; |
| 302 | Multi-dimensional Quantum Spectroscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we focus on the differences of nuclear spin environments of spins residing inside the diamond and on the surface of the diamond. |
Konstantin Herb; John Abendroth; Erika Janitz; Laura Völker; Christian Degen; |
| 303 | Quantum Sensing Protocols from Reinforcement Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we instead utilize a reinforcement learning algorithm to design pulse sequences for sensitivity improvement. |
Jner Tzern Oon; Connor Hart; George Witt; Kevin Olsson; Joseph Kovba; Blake Gage; Ronald Walsworth; |
| 304 | Sensing and Reconstructing A Quantum-classical Spin Bath Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We formally introduce and experimentally demonstrate a quantum sensing protocol to sample and reconstruct the noise spectrum of a single qubit sensor by using a sequence of interferometric measurements based on Walsh dynamical decoupling sequences. |
Boning Li; Guoqing Wang; Yuan Zhu; Hao Tang; Faisal Alsallom; Changhao Li; Alexandre Cooper-Roy; Paola Cappellaro; |
| 305 | Mechanical Sensing Via A Driven Spin-mechanical System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report the experimental demonstration of a mechanical sensing approach that exploits the interaction between a spin and a mechanical oscillator. |
Hailin Wang; Xinzhu Li; |
| 306 | Optimization of Optical Spin Readout of The Nitrogen-vacancy Center in Diamond Based on Spin Relaxation Model Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For quantum sensing, it is vital to develop an efficient technique for determining the quantum state of the sensor. |
Yuki Nakamura; Hideyuki Watanabe; Kohei Itoh; Kento Sasaki; Junko Ishi-Hayase; Kensuke Kobayashi; |
| 307 | Magnetic Resonance Imaging of Diffusion in Micro-structures Using Diamond Quantum Sensors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we introduce the nitrogen vacancy (NV) center based nuclear magnetic resonance (NMR) as a novel tool to probe diffusion on the micro-scale. |
Fleming Bruckmaier; Dominik Bucher; Nick Neuling; Robin Allert; |
| 308 | Electrical Control of A Single Nitrogen-vacancy Center By Nanoscale Engineered Magnetic Domain Wall Motions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, utilizing magnetic multi-layers with spontaneous perpendicular anisotropy, we implemented a hybrid NV-magnetic-domain-wall system, and demonstrated electrical control of the NV spin properties. |
Nathan McLaughlin; Senlei Li; Jeffrey Brock; Shu Zhang; Hanyi Lu; Mengqi Huang; Yuxuan Xiao; Jingcheng Zhou; Yaroslav Tserkovnyak; Eric Fullerton; Hailong Wang; Chunhui Rita Du; |
| 309 | Enhancement of NV-center Coherence Times Via Suppression of The Surface Noise in Coated Nanodiamonds Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Furthermore, we theoretically obtain the signatures of both surface and bulk noises on the evolution of NV-coherence. By contrasting these findings with our experimental data, we show that while the surface noise is the dominant source for bare nanodiamonds, silica-coated nanodimamonds show a dominant bulk noise source, thus evidencing a surface noise suppression via coating processes. |
Denis Candido; Uri Zvi; Peter Maurer; Michael Flatté; |
| 310 | Engineering Spin Coherence in Core-Shell Diamond Nanocrystals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate a simple method to engineer the surface-dominated noise spectra and extend the spin bath correlation time with a core-shell design. |
Uri Zvi; Adam Weiss; Denis Candido; Aidan Jones; Michael Flatté; Peter Maurer; Aaron Esser-Kahn; Iryna Golovina; Lingjie Chen; |
| 311 | Protecting Nuclear Spin Ensembles Against Temperature and Strain Variations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, their current performances are still limited by the decoherence due to the variation of their intrinsic quadrupole and hyperfine interactions. We propose an unbalanced echo sequence to overcome this challenge by using a second spin to refocus the variation of these interactions, which preserves the quantum information stored in the nuclear spin free evolution. |
Guoqing Wang; Ariel Barr; Hao Tang; Mo Chen; Changhao Li; Haowei Xu; Ju Li; Paola Cappellaro; |
| 312 | DC Magnetometry at The T2 Sensing Limit Harnessing Dipolar-ordered Nuclear Spins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on a DC magnetometry technique that is intrinsically limited by sensor spin transverse lifetime T 2’. |
Ozgur Sahin; Paul Schindler; Marin Bukov; Ashok Ajoy; |
| 313 | DC Magnetometry Below The Ramsey Limit with Rapidly Rotating Diamonds Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will report on quantum sensing of dc magnetic fields exceeding the sensitivity of conventional T 2*-limited dc Ramsey magnetometry by more than an order of magnitude. |
Alexander Wood; Alastair Stacey; Andy Martin; |
| 314 | High Efficiency RF Antennas for Quantum Sensing Applications Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on the design, fabrication, and optimization principles of coplanar RF antennas for quantum sensing applications. |
Birol Ozturk; Sheikh Mahtab; Peker Milas; Michael Spencer; |
| 315 | High-throughput In-flow Quantum Sensing Based on Droplet Microfluidics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we introduce a novel high-throughput, in-flow, quantum sensing platform based on droplet microfluidics. |
Adrisha Sarkar; Zachary Jones; Sophie Conti; Deepti Tanjore; Ashok Ajoy; |
| 316 | On-demand Generation of Neutral Silicon Vacancy Centers in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate two distinct approaches to on-demand generation of neutral silicon vacancy centers. |
Zihuai Zhang; Josh Zuber; Lila Rodgers; Xin Gui; Paul Stevenson; Minghao Li; Marietta Batzer; Marcel.li Grimau; Brendan Shields; Andrew Edmonds; Nicola Palmer; Matthew Markham; Robert Cava; Patrick Maletinsky; Nathalie de Leon; |
| 317 | Nonlinear Quantum Interferometry with Josephson Junction Based Parametric Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Meanwhile, quantum microwave sensing represents a novel and quickly growing field, which is important for various applications in quantum information processing or quantum field theory. In this context, we realize and investigate a nonlinear interferometer in the microwave regime. |
Fabian Kronowetter; Florian Fesquet; Kedar Honasoge; Michael Renger; Yuki Nojiri; Maria-Teresa Handschuh; Achim Marx; Rudolf Gross; Kirill Fedorov; |
| 318 | Demonstration of Mode Entanglement and Swapping for Enhanced Weak Signal Detection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate a prototype detector that accelerates the detection of a weak microwave tone by 5.6 times compared to a quantum-limited detector. |
Yue Jiang; Elizabeth Ruddy; Kyle Quinlan; Nicholas Frattini; Maxime Malnou; Konrad Lehnert; |
| 319 | A Hybrid Cavity-superconducting Qubit-magnon Haloscope for Dark Matter Detection in The Microwave Range Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present our original setup for detecting axion dark matter using quantum microwaves. |
Takis Kontos; |
| 320 | Multi-qubit Readout and Control for A Qubit-based Dark Matter Detector Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we demonstrate simultaneous control and readout of multiple qubits using the Quantum Instrumentation Control Kit (QICK) along with an in-house RF companion board to generate, read, and process microwave signals. |
Kester Anyang; |
| 321 | Fabrication of Radio-Frequency Quantum Upconverters with Double-Angle Aluminum Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe the fabrication of the radio-frequency quantum upconverter (RQU), a superconducting device that uses the flux-sensitive inductance of a three-junction interferometer to couple low-frequency electromagnetic signals (5 kHz – 30 MHz) into sidebands on high frequency carrier waves (4-6 GHz). |
Jason Corbin; Chelsea Bartram; Saptarshi Chaudhuri; Hsiao-Mei Cho; Stephen Kuenstner; Dale Li; Nicholas Rapidis; Chiara Salemi; Maria Simanovskaia; Jyotirmai Singh; Elizabeth van Assendelft; Betty Young; Kent Irwin; |
| 322 | Phase-sensitive Detection with The Radio-Frequency Quantum Upconverter Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discuss measurements with prototype RQUs, including phase-sensitive detection of a low frequency circuit which is a necessary prerequisite for evading quantum backaction noise. |
Elizabeth van Assendelft; Chelsea Bartram; Saptarshi Chaudhuri; Hsiao-Mei Cho; Jason Corbin; Stephen Kuenstner; Dale Li; Nicholas Rapidis; Chiara Salemi; Maria Simanovskaia; Jyotirmai Singh; Betty Young; Kent Irwin; |
| 323 | Quantum Measurement of RF Resonators to Search for Axion Dark Matter Below 300 MHz Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will discuss the use of BAE with both single electromagnetic RF resonators and networked RF resonators. |
Kent Irwin; Elizabeth van Assendelft; Chelsea Bartram; Saptarshi Chaudhuri; Hsiao-Mei Cho; Jason Corbin; Stephen Kuenstner; Dale Li; Nicholas Rapidis; Chiara Salemi; Maria Simanovskaia; Jyotirmai Singh; Betty Young; |
| 324 | Progress Towards Implementing GC-enhancement in An Axion Search Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In particular, higher-order parametric processes such as single mode squeezing that limit the achievable interaction rates need to be regulated and a transmission line must be introduced to physically separate the superconducting readout circuitry from the large magnetic field that will surround the axion-sensitive science cavity. Here, we present progress towards overcoming these challenges and applying the technique to a real axion search. |
Elizabeth Ruddy; Yue Jiang; Kyle Quinlan; Maxime Malnou; Nicholas Frattini; Konrad Lehnert; |
| 325 | Quantum Sensing Through The Resonant Transduction of Pair-breaking Photons to Quasiparticles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We utilize a voltage biased Josephson junction as an emitter of mm-wave radiation and characterize our sensors with measurements of the qubit excitation rate and parity switching rate as a function of the radiation frequency from 100 GHz to 1 THz. We describe our work to optimize these sensors to reduce dark count rates. |
David Harrison; Chuan-Hong Liu; Shravan Patel; Abigail Shearrow; Owen Rafferty; Francisco Schlenker; Robert McDermott; |
| 326 | Cryogenic Optical Beam Steering for Characterizing Response of Superconducting Quantum Devices to Radiation Events Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This can be used to characterize detector efficiency, and to investigate phenomena such as position sensitivity, phonon propagation, quasiparticle poisoning, and background-induced decoherence. In this talk, I will present the design overview and specifications of this calibration unit, along with current status and plans of the testing program. |
Hannah Magoon; |
| 327 | Understanding Energy Dissipation in Si Substrate Transmon Qubit Through Phonon Kinematics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we discuss our work in understanding phonon propagation, down conversion, scattering, and surface interaction between the Si substrate and the superconducting parts of a transmon qubit along with electron-hole pair generation and recombination in the Si. |
Israel Hernandez; |
| 328 | Toward Optically Driven Electrical Quantum Metrology Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use a mode-locked laser to drive Josephson junction arrays (JJA) [1]. |
Antti Kemppinen; Jaani Nissilä; Katja Kohopää; Pranauv Selvasundaram; Emma Mykkänen; Thomas Fordell; Pekka Immonen; Robab Najafi Jabdaraghi; Jorden Senior; Joel Hunnakko; Oliver Kieler; Mark Bieler; Björnar Karlsen; Eivind Bardalen; Per Alfred Øhlckers; Matteo Cherchi; Kirsi Tappura; Visa Vesterinen; Antti Manninen; Joonas Govenius; Giovanni Delrosso; |
| 329 | Random Pulse Sequences for Noise Spectroscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we describe an alternative method for quickly and approximately characterizing S(ω). |
kaixin Huang; Demitry Farfurnik; Alireza Seif; Mohammad Hafezi; Yi-Kai Liu; |
| 330 | Estimating Quantum Gate Fidelities in Context Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we will present a flexible framework for estimating the average gate fidelity of a quantum operation in any particular context of interest. |
Dripto Debroy; Jonathan Gross; Elie Genois; Zhang Jiang; Vadim Smelyanskiy; |
| 331 | Precision Gate Characterization in The Presence of Low-frequency Noise on A Superconducting Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In addition to making the qubit frequency itself ill defined for estimation purposes, these fluctuations mask deviations in other well-defined parameters in the system. We present a characterization technique that allows us to precisely target select unitary parameters for controlled-Z gates in the presence of such low-frequency noise, obtaining up to 20 times precision improvement in these parameters. |
Jonathan Gross; Dripto Debroy; Ze-Pei Cian; Elie Genois; Zhang Jiang; |
| 332 | Resource-efficient Frame-based Non-Gaussian Quantum Noise Spectroscopy and Optimized Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Notably, by tying the choice of frame to the available control, a model-reduced representation of the open-system dynamics is obtained, allowing efficient noise characterization under experimental constraints. Within this general framework, we show how to achieve digital noise spectroscopy of non-Gaussian classical dephasing using a window frame. |
Wenzheng Dong; Gerardo Paz Silva; Lorenza Viola; |
| 333 | Two Qubit Correlated Noise and Crosstalk Characterization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose and validate a nonparametric quantum noise spectroscopy protocol to measure the spectra associated with spatiotemporally correlated dephasing noise and fluctuating crosstalk on two qubits. |
Mayra Amezcua; Leigh Norris; Tom Gilliss; James Shackford; Timothy Sweeney; Kevin Schultz; |
| 334 | Modeling Low-Frequency Hamiltonian Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Non-markovian noise sources (e.g. leakage, crosstalk and temporal correlations) are common in real systems, and are pernicious in that we not only do not capture them with most existing characterization protocols, but they can in fact corrupt our estimates for the markovian noise in a device. In this work we introduce a method for modeling and characterizing non-markovianity due to temporally correlated fluctuating hamiltonians in the quasi-static DC/low-frequency limit and demonstrate its performance in simulation. |
Corey Ostrove; Timothy Proctor; Megan Dahlhauser; Kevin Young; Robin Blume-Kohout; |
| 335 | Full Characterisation of Quantum Non-Markovian Processes: from Tomography to Noise Detection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a method of full quantum process tomography that captures non-Markovian noise and a method to detect quantum memory in a non-Markovian process [1]. |
Christina Giarmatzi; |
| 336 | Identifying Off-Resonant Errors on Fixed Frequency Transmons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We probe our system for off-resonant excitations, a specific form of non-Markovian coherent error, using continuous phase amplification. Since errors due to excitations of an off-resonant transition are non-stationary they are hard to amplify and detect without using this technique. |
Seth Merkel; |
| 337 | Noise Modeling of The IBM Quantum Experience Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose an effective error model of single-qubit operations on the IBM Quantum Experience, that possesses considerable predictive power and takes into account spatio-temporally correlated noise. |
Yasuo Oda; Omar Shehab; Gregory Quiroz; |
| 338 | Self-consistent Learning and Control of Arbitrary Quantum Correlated Noise, and Beyond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Real-world hurdles range from imperfect gates and decoherence, to spatiotemporal non-Markovianity, crosstalk, correlated control errors, and undesirable driving of bath transitions. These effects must be treated, but how can we combine everything into a feasible and useful framework, and how can this then be learned? |
Gregory White; Petar Jurcevic; Lloyd Hollenberg; Charles Hill; Kavan Modi; |
| 339 | Probing Logical Error Models with Gate Set Tomography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Testing this conjecture requires precise, reliable probes of logical error processes. We demonstrate that logical gate set tomography (GST) can probe the dynamics of a numerically simulated logical qubit precisely enough to test the nature of its error process. |
Kenneth Rudinger; Jalan Ziyad; Mario Morford-Oberst; Julie Campos; Stefan Seritan; Tzvetan Metodi; Robin Blume-Kohout; |
| 340 | Model-Based Qubit Noise Spectroscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we derive model-based QNS approaches using inspiration from classical signal processing, primarily though the recently developed Schrodinger wave autoregressive moving-average (SchWARMA) approach for correlated noise models. |
Kevin Schultz; Christopher Watson; Andrew Murphy; Timothy Sweeney; Gregory Quiroz; |
| 341 | Experimental Multi-Time Process Tomography on Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we introduce a methodology to perform multi-time quantum process tomography, which uses a process matrix formalism to allow for full characterisation of non-Markovian dynamics. |
Tyler Jones; Christina Giarmatzi; Alexei Gilchrist; Fabio Costa; Arkady Fedorov; |
| 342 | Using Quantum Circuits with Convolutional Neural Networks for Multi-Object Detection and Classification Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The goal of this paper is to offer a solution to the problem of research and development of quantum algorithms and methods on various real-time applications. |
Mandeep Saggi; Sabre Kais; |
| 343 | Quantum Natural Language Processing Applications on High-performance Computing Systems and Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We assess the feasibility and accuracy of QNLP models using numerical simulators on HPC systems and actual quantum hardware. |
Eduardo Coello Perez; In-Saeng Suh; Prasanna Date; John Gounley; Mayanka Chandra Shekar; Kathleen Hamilton; |
| 344 | Parameterized Quantum Circuits for Reinforcement Learning of Classical Rare Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this article, we propose two quantum reinforcement learning (QRL) approaches to study rare dynamics of time-dependent systems and investigate their benefits over classical approaches based on neural networks. |
Sumeet Khatri; Alissa Wilms; Laura Ohff; Andrea Skolik; Jens Eisert; |
| 345 | Hybrid Classical-Quantum Machine Learning for Image Recognition on CIFAR-10 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Improvements to prior hybrid methods are implemented and the resultant model trained and evaluated on the CIFAR-10 standard computer vision dataset. We present an overview of the theory behind these hybrid approaches, the improvements made to them, and a comparison of the results achieved from those improvements to top classical algorithms applied to the same data. |
Julia Kwok; Nicholas Shorter; Danielle Couger; Joshua Job; Steven Adachi; Derek Wise; |
| 346 | Spectral Asymmetry of Quantum Feature Maps with Real World Classical Data Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We find the spectral composition reveals characteristics between differing data types. |
Mekena Metcalf; Jorja Kirk; |
| 347 | The Complexity of NISQ Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Are NISQ algorithms inherently weaker than fault-tolerant quantum algorithms? In this talk we formalize and study these questions through the lens of computational complexity theory. |
Jordan Cotler; |
| 348 | Expressivity and Generalization Error of Projected Fidelity Quantum Kernels Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work provides a deeper understanding of the properties of projected fidelity quantum kernels. |
Beng Yee Gan; Supanut Thanasilp; Daniel Leykam; Dimitris Angelakis; |
| 349 | Generalization of Quantum Kernel Methods Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider a wider class of models by varying a hyperparameter that we call quantum kernel bandwidth. |
Ruslan Shaydulin; Abdulkadir Canatar; Evan Peters; Cengiz Pehlevan; Stefan Wild; |
| 350 | Numerical Evidence Against Advantage with Quantum Fidelity Kernels on Classical Data Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that the general-purpose hyperparameter tuning techniques proposed to improve the generalization of quantum kernels lead to the kernel becoming well-approximated by a classical kernel, removing the possibility of quantum advantage. |
Lucas Slattery; Ruslan Shaydulin; Shouvanik Chakrabarti; Sami Khairy; Stefan Wild; Marco Pistoia; |
| 351 | Exponential Concentration and Untrainability in Quantum Kernel Methods Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we study the trainability of quantum kernels from the perspective of the resources needed to accurately estimate kernel values. |
Supanut Thanasilp; Samson Wang; Marco Cerezo; Zoe Holmes; |
| 352 | Synergy Between Quantum Circuits and Tensor Networks: Short-cutting The Race to Practical Quantum Advantage (Part 1) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a scalable means of leveraging classical resources to compute task-specific initializations for PQCs, which we show significantly boosts their performance on a variety of quantum simulation and machine learning problems, while demonstrably avoiding barren plateaus. |
Manuel Rudolph; Jacob Miller; Jing Chen; Atithi Acharya; Alejandro Perdomo-Ortiz; |
| 353 | Synergy Between Quantum Circuits and Tensor Networks: Short-cutting The Race to Practical Quantum Advantage (Part 2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a scalable means of leveraging classical resources to compute task-specific initializations for PQCs, which we show significantly boosts their performance on a variety of quantum simulation and machine learning problems, while demonstrably avoiding barren plateaus. |
Jacob Miller; Manuel Rudolph; Jing Chen; Atithi Acharya; Alejandro Perdomo-Ortiz; |
| 354 | Silicon Spin Qubits with Implanted Single Donor Ions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This method enables arrays of donors to be fabricated in a step-and-repeat process. |
Danielle Holmes; Andrea Morello; David Jamieson; Alexander Jakob; Tim Botzem; Serwan Asaad; Vincent Mourik; Holly Stemp; Irene Fernández de Fuentes; Mateusz Madzik; Simon Robson; Rostyslav Savytskyy; Benjamin Joecker; Mark Johnson; Fay Hudson; Andrew Dzurak; Brett Johnson; Jeffrey McCallum; |
| 355 | Understanding Transport in Dopant Arrays in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We employ exact diagonalization combined with non-equilibrium Green’s functions to model transport through 3×3 dopant arrays in Si and extract information about the many-body states in the arrays. |
Garnett Bryant; Michal Gawelczyk; Michal Zielinski; |
| 356 | Simulation of Parallel Gate Fidelities in 1D and 2D Arrays of Noisy Flip-Flop Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We analyze the parallel gate fidelity results obtained in different configurations of active/idle FFQs for some inter-qubit distances, exploring strategies to mitigate the unwanted interaction effects and to enhance the performances of selected QEC codes. |
Marco De Michielis; Elena Ferraro; |
| 357 | Spin-orbit Interactions of Two Phosphorus Donors in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show in this work various spin-orbit terms are present depending on the separation direction of the two donors, giving rise to anisotropy in the electron spin relaxation time T 1 in a 2P donor dot qubit. |
Yu-Ling Hsueh; Daniel Keith; Yousun Chung; Samuel Gorman; Ludwik Kranz; Serajum Monir; Zachary Kembrey; Joris Keizer; Michelle Simmons; Rajib Rahman; |
| 358 | Stark Effect in Phosphorus Donor Dots: Electrical Control of Electron and Nuclear Spins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we show that the hyperfine Stark effect, which is the change in hyperfine coupling between electron and nuclear spins due to electric fields, can be used for electrical control of the electron and nuclear spins. |
Md Serajum Monir; Yuling Hsueh; Michael Jones; Pascal Macha; Jonathan Reiner; Samuel Gorman; Michelle Simmons; Rajib Rahman; |
| 359 | Universal Nuclear Two-qubit Logic Operations in An Exchange-coupled Donor System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Combined with the ability to perform electron 2-qubit gates between two exchange-coupled electrons [4], this work completes the toolbox for constructing a scalable spin-based quantum processor in silicon. |
Holly Stemp; Serwan Asaad; Mark Johnson; Kohei Itoh; Alexander Jakob; Brett Johnson; David Jamieson; Fay Hudson; Andrew Dzurak; Arne Laucht; Andrea Morello; |
| 360 | An Open Source Software Package to Compare and Extend Effective Mass Models of The Phosphorus Donor in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we examine models of the donor atom’s Coulomb potential considering the effects of a dielectric constant with dynamic response. |
Luke Pendo; Xuedong Hu; |
| 361 | Universal SU(8) Control of A High-spin Nucleus in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have developed a global rotation control scheme for controlling the nucleus of the high-spin 123Sb donor (I=7/2) implanted in silicon – an appealing platform for realization of quantum processors [1] and for exploration of quantum chaos [2]. |
Xi Yu; Benjamin Wilhelm; Pragati Gupta; Arjen Vaartjes; Daniel Schwienbacher; Barry Sanders; Andrea Morello; |
| 362 | Extending The Low-frequency Limit of Qubit Noise Spectroscopy Beyond The Inverse Dephasing Time Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This limitation is particularly severe in most solid-state quantum systems, where 1/ f noise dominates. Here, we demonstrate a novel spectroscopy protocol that circumvents this limitation by employing control sequences which allow moving the sampling regime to lower frequency regions. |
Benjamin Wilhelm; Xi Yu; Yuanlong Wang; Gerardo Paz Silva; Tim Botzem; Andrea Morello; |
| 363 | Quantum Simulation of Dynamical Lattices Using Electrons in Silicon Dopant Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose to use dopant arrays in silicon to encode fermions in Si conduction band electrons. |
Ali Rad; Michael Gullans; Alexander Schuckert; Eleanor Crane; Mohammad Hafezi; Gautam Nambiar; Zohreh Davoudi; Richard Silver; |
| 364 | Optimisation of Electron Spin Qubits in Electrically Driven Multi-donor Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we examine the impact of qubit geometry and nearby charge defects on the electrical operation and coherence of a 2P:1P electron spin qubit. |
Abhikbarta Sarkar; Joel Hochstetter; Allen Kha; Xuedong Hu; Michelle Simmons; Rajib Rahman; Dimitrie Culcer; |
| 365 | Low Thermal Budget PMOS for Qualifying The Semiconductor Environment of STM-placed Donor Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we describe the fabrication and measurement of low thermal budget p-type metal oxide semiconductor (PMOS) transistors for quick evaluation of the STM-placed donor qubit environment. |
Christopher Allemang; Deanna Campbell; Jeffrey Ivie; Tzu-Ming Lu; Shashank Misra; |
| 366 | High Fidelity Coherent Magnetic and Electric Control of A Single Spin-7/2 Donor Atom in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we show full coherent magnetic and electric control of the 16-dimensional Hilbert space of a 123Sb donor. |
Daniel Schwienbacher; Irene Fernández de Fuentes; Arjen Vaartjes; Tim Botzem; Benjamin Joecker; Fay Hudson; Alexander Jakob; Kohei Itoh; Andrew Dzurak; David Jamieson; Andrea Morello; |
| 367 | Flux-pulse Optimization for Entangling Gates on A Tunable-coupler Architecture Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present optimal flux control techniques for superconducting qubits, focusing on the engineering of dynamical sweet spots. |
Nicolas Didier; |
| 368 | Demonstrating Two-qubit Gates at The Quantum Speed Limit Using Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we experimentally demonstrate commonly used two-qubit gates at nearly the fastest possible speed allowed by the physical interaction strength between two superconducting transmon qubits. |
Bora Basyildiz; Joel Howard; Alexander Lidiak; Casey Jameson; Kyle Clark; Tongyu Zhao; Mustafa Bal; Junling Long; David Pappas; Meenakshi Singh; Zhexuan Gong; |
| 369 | Demonstration of High-fidelity Parametric-resonance Gates at Scale Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate high-fidelity parametric-resonance entangling gates in multi-qubit floating tunable coupler architectures. |
Eyob Sete; Angela Chen; Riccardo Manenti; Shobhan Kulshreshtha; Stefano Poletto; |
| 370 | Novel Superconducting Qubit Discovery Via An Enumeration Based Approach Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will report progress on a circuit enumeration-based procedure to discover new noise protected superconducting qubits. |
Eli Weissler; Zhenxing Liu; Joshua Combes; Mohit Bhat; |
| 371 | Error Suppression in The Cross-resonance Gate Via Recursive DRAG Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: They are often suppressed through long pulse ramping time and echoed gate design, which inevitably increases the gate time. In this talk, we present a systematic way to suppress all these coherent errors through the recursive DRAG method. |
Boxi Li; Tommaso Calarco; Felix Motzoi; |
| 372 | Numerically Modeling The Hamiltonian of A Microwave-driven Superconducting Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a numerical method that leverages finite-element simulation to obtain the low-energy time-dependent Hamiltonian of a multimode and multi-junction Josephson device with complex geometry in the presence of external drives. |
Yao Lu; Kevin Smith; Daniel Weiss; Xinyuan You; Yaxing Zhang; Suhas Ganjam; Aniket Maiti; John Garmon; Ian Shem; Jens Koch; Steven Girvin; Robert Schoelkopf; |
| 373 | Quantum State Transfer Between Two Superconducting Resonators By Parametric Voltage Modulation on Gated Josephson Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we analyze the exchange of excitations between microwave cavities based on parametric resonance. |
Yinqi Chen; Javad Shabani; Hugh Churchill; Vladimir Manucharyan; Maxim Vavilov; |
| 374 | A Strongly Coupled Two-qubit System with Weak Quantum Crosstalk Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we discuss the design of a system of transmons with multiple coupling paths between qubits, which provides a high entangling-gate rate with reduced static quantum crosstalk. |
Konstantin Nesterov; Denis Chevallier; Chiara Pelletti; Larry Chen; Bingcheng Qing; Ravi Naik; David Santiago; Irfan Siddiqi; Alexei Marchenkov; |
| 375 | Analysis of Underlying Mechanisms and Alleviation of Static ZZ Coupling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a theoretical analysis of the underlying mechanisms which cause the static ZZ coupling, with the aim of both alleviating and utilizing the effect in single- and two-qubit gates. |
Simon Pettersson Fors; Jorge Fernández-Pendás; Anton Frisk Kockum; |
| 376 | Planar Multi-mode Superconducting Circuit Design for High-dimensional Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For this purpose, we propose planar coupling strategies for multimons inspired by state-of-the-art planar topologies of Josephson ring modulator-based devices [4, 5]. |
Murat Sarihan; Kangdi Yu; Madeline Taylor; Ananyo Banerjee; Jin Ho Kang; Cody Fan; Kai-Chi chang; Chee Wei Wong; |
| 377 | Efficient Machine Learning Systems for High-Fidelity Qubit Readout Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work presents a scalable approach for mitigating single-shot readout errors by using a matched filter in conjunction with a significantly smaller and scalable neural network for qubit-state discrimination. |
Satvik Maurya; Chaithanya Mude; William Oliver; Benjamin Lienhard; Swamit Tannu; |
| 378 | High-fidelity Qutrit Entangling Gates with Superconducting Circuits Based on Parametric Coupling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a protocol to implement CZ gates using two fixed frequency transmons capacitively coupled to a tunable transmon. |
Mahadevan Subramanian; Adrian Lupascu; |
| 379 | Multi-Qubit Coupler for Superconducting Circuits with Controllable Inductive Interactions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a derivation of the relevant circuit QED Hamiltonian and simulate parameter regimes that are experimentally accessible. |
Klaus Liegener; Stefan Filipp; |
| 380 | Towards A Depletion Mode Single-hole Spin Qubit in Ge Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we show our progress towards a depletion mode single-hole spin qubit in a Ge/SiGe heterostructure platform. |
Jaime Saez Mollejo; Josip Kukucka; Daniel Jirovec; Yona Schell; Andrea Ballabio; Danny Chrastina; Giovanni Isella; Georgios Katsaros; |
| 381 | CQED with GrAl Resonators and Hole Spins in Germanium Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report on hole double quantum dots (DQD) hosted in Ge/SiGe heterostructure coupled to a granular aluminum (grAl) resonator. |
Marián Janík; Carla Nataly Borja Espinosa; Oliver Sagi; Andrea Ballabio; Pasquale Scarlino; Ioan Pop; Daniel Chrastina; Giovanni Isella; Georgios Katsaros; |
| 382 | Towards High-fidelity Charge State Control of The NV Center at 100 K Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We performed experiments at 100 K, a temperature at which the relaxation time of the electron spin of the NV center is long (>1 s) compared to room temperature, while cooling is much less demanding than for reaching the commonly studied regime of <10 K. Ionization of the NV center from its negative charge state to its neutral form, limits efficiency of the system. Therefore, we have explored and implemented different methods for optical readout and initialization of the charge state of a naturally occurring NV center in an isotopically purified <100> diamond sample. |
Margriet van Riggelen; Hans Bartling; Tim Hugo Taminiau; |
| 383 | Quantum State Transfer of Hole Spin Qubits in Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For that purpose, we implement a driving protocol based on Shortcuts to Adiabaticity (STA), minimizing noise effects while enhancing robustness [5, 6]. |
David Fernández; Yue Ban; Gloria Platero; |
| 384 | The Diabatic SWAP Gate Based on Si-MOS Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By diabatic modifying the detuning, we observe the ratio of J/ΔE z changes more than two orders of magnetics, thus guaranteeing the independent Elzerman readout while realizing the exchange oscillation. |
Ming Ni; |
| 385 | Atomic-Precision Placement of Single Donors in Silicon Quantum Devices with 100% Yield Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present here a modification of HDL in which STM tip-based molecular manipulation enables a dramatic increase in yield with 100% success when incorporating P into Si. |
Jonathan Wyrick; Pradeep Namboodiri; Fan Fei; Joseph Fox; Utsav Utsav; Richard Silver; |
| 386 | Theory of Coherent Electron Shuttling Using Pre-defined and Moving Quantum Dots in Si Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have identified challenges in two shuttling modes: Bucket Brigade (BB) and Conveyor Belt (CB). |
Jan Krzywda; Lukasz Cywinski; |
| 387 | Absence of Barren Plateaus and Scaling of Energy Gradients in The Optimization of Isometric Tensor Network States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we consider optimization problems for quantum many-body systems which can be studied on classical computers or in the form of variational quantum eigensolvers on quantum computers. |
Qiang Miao; Thomas Barthel; |
| 388 | Estimation of Ground State Energy of Small Molecules and Energy Profile of CO2 Interaction with NH3 Using The Variational Quantum Eigensolver Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe the many-body potential energy with the expansion to the fourth order using Vibrational Self-Consistent Field method. |
Dominic Alfonso; Manh Tien Nguyen; Yueh-Lin Lee; Benjamin Avramidis; Hari Paudel; Yuhua Duan; |
| 389 | An Intrinsic Reaction Coordinate (IRC) Driven VQE Algorithm (IRC-VQE) to Trace Chemical Reaction Pathways Accurately Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report here an IRC-driven variational quantum eigensolver (IRC-VQE) algorithm to trace accurately chemical reaction pathways as a function of molecular bond stretching, bending or torsional degrees of freedom, where we estimate the ground state energy using VQE and trace the pathway in two different modes, viz., a perturbative-distortion based approach for traversing points along the IRC path, or a finite-difference based geometry optimization in eigenmode basis. |
Shampa Sarkar; M R Nirmal; Manoj Nambiar; Sriram Srinivasan; |
| 390 | Determining Ground State Energies of Molecules Using A Quantum Variational Eigensolver Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using a quantum variational eigensolver, we determine the ground state energies of different molecules. |
Renuka Rajapakse; Timothy Powers; |
| 391 | Limitations of Local Quantum Algorithms for Random Optimization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: 2) Obstructions to large families of algorithms (now including local quantum algorithms) in the absence of this solution geometry (known as a Branching Overlap-Gap Property). We present two recent results that contribute to this line of research and show the following: 1) Every local quantum algorithm (including the QAOA up to ~log(n) depth) is obstructed from computing arbitrarily good solutions to typical instances of random constraint satisfaction problems (random CSPs) when the problem exhibits a Branching Overlap-Gap Property. |
Juspreet Singh Sandhu; Jonathan Shi; Peter Love; Chris Jones; Kunal Marwaha; Chi-Ning Chou; |
| 392 | Efficient Adiabatic Preparation of Tensor Network States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we propose and study a specific adiabatic path to prepare a family of tensor network states that are unique ground states of few-body parent Hamiltonians in finite lattices, which include normal tensor network states, as well as other relevant non-normal states. |
Zhi-Yuan Wei; Daniel Malz; J. Ignacio Cirac; |
| 393 | Efficient Quantum Correlated Optimization of Industrial Planning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Unfortunately, in spite of the huge efforts invested in the field, so far, quantum computers have not been able to demonstrate a commercial value in the solution of optimization problems. |
Daniel Porat; |
| 394 | Chromatin Domains with Quantum Annealing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Binary quadratic models are used to model the state of nucleosome chains and find minimum energy combinations that represent possible chromatin domains. |
Tobias Kempe; Mohammad Ansari; Ali Tabei; |
| 395 | Navigating The Noise-depth Tradeoff in Adiabatic Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Adiabatic quantum algorithms solve computational problems by slowly evolving a trivial state to the desired solution. |
Daniel Azses; Maxime Dupont; Bram Evert; Matthew Reagor; Emanuele Dalla Torre; |
| 396 | Quantum Locally Testable Code with Exotic Parameters Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper, we present a few simple constructions of quantum locally testable codes that achieve interesting parameters which were previously unknown. |
Zhiyang He; Anand Natarajan; Andrew Cross; Guanyu Zhu; Mario Szegedy; |
| 397 | Accurate Quantum Chemistry Calculations on Near-term Quantum Computers Enabled By The Transcorrelated Method Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will present results on the Hubbard model and small chemical test systems, like the hydrogen molecule and lithium hydride, where results within chemical accuracy to the complete basis set limit and experimental results are within reach with only 6 to 12 qubits. |
Werner Dobrautz; Igor Sokolov; Martin Rahm; Ali Alavi; Ivano Tavernelli; |
| 398 | Angular Momentum Entanglement of Molecular Interactions for Quantum Computing Using Solid Harmonic Gaussian Orbitals Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: For quantum chemistry simulations, its molecular integral package is a crucial part of any quantum chemistry program. Unfortunately, efficient calculations of molecular integrals … |
Anguang Hu; Hang Hu; Hsu Kiang (James) Ooi; |
| 399 | Adaptive Variational Ground State Preparation of Spin-1 Models with Multiple Spin-qubit Encodings Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: One of the main targets of these algorithms are quantum spin models that cannot be solved efficiently on classical computers. Here, we focus on interacting spin-1 models, which are known to exhibit rich phase diagrams as they can contain local anisotropy terms, modeling crystal field effects of higher-S spin materials such as rare-earth magnets, including much sought-after quantum spin liquids. |
Joao Getelina; Yong-Xin Yao; Peter Orth; Thomas Iadecola; |
| 400 | Ground-state Energy Estimation on Early Fault-tolerant Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We argue that algorithms based on the Hamiltonian evolution input model are suitable in the early-fault tolerant regime, can be as efficient as those based on the block encoding input model, and can achieve near-optimal complexities for estimating the ground-state energy and for preparing the ground state. |
Lin Lin; |
| 401 | Quantum Gaussian Filter for Exploring Ground-state Properties Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose a quantum Gaussian filter (QGF) with the filter operator being a Gaussian function of the system Hamiltonian. |
Min-Quan He; Dan-Bo Zhang; Z. D. Wang; |
| 402 | Accurate Quantum Chemistry Calculations Using NISQ Era Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Accurate quantum simulation of molecular excited states is necessary to realize the quantum advantage in describing complex chemical phenomena. In this regard, we have developed an equation of motion (EOM) based quantum algorithm which is theoretically rigorous, requires fewer quantum resources and is expected to be more robust to noise than the current state-of-the art methods We demonstrate the usefulness of our approach by calculating ionization potentials, electron affinities and excitation energies of small molecular systems. |
Ashutosh Kumar; Ayush Asthana; Vibin Abraham; Thomas Crawford; Nicholas Mayhall; Yu Zhang; Lukasz Cincio; Sergei Tretiak; Pavel Dub; |
| 403 | Quantum Algorithm for Downfolding Quantum Chemistry Hamiltonians Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop a quantum computing approach to construct an effective Hamiltonian acting on the reduced subspace of orbitals starting from the parent electronic Hamiltonian that acts upon the complete active space. |
Anirban Mukherjee; |
| 404 | When Is Better Ground State Preparation Worthwhile for Energy Estimation? Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Analyzing Lin and Tong’s near-optimal state preparation algorithm we show that it can reduce a proxy for the runtime of ground state energy estimation near quadratically. |
Shivesh Pathak; Antonio Russo; Stefan Seritan; Andrew Baczewski; |
| 405 | Quantum Algorithm for Ground State Energy Estimation Using Circuit Depth with Exponentially Improved Dependence on Precision Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we develop and analyze ground state energy estimation algorithms that use just one auxiliary qubit and for which the circuit depths scale as O(1/Δ · polylog(Δ/ε)), where Δ ≥ ε is a lower bound on the energy gap of the Hamiltonian. |
Ruizhe Zhang; Guoming Wang; Daniel Stilck França; Shuchen Zhu; Peter Johnson; |
| 406 | Training Variational Quantum Circuits with CoVaR: Covariance Root Finding with Classical Shadows Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we introduce a method we call CoVaR, an alternative means to exploit the power of variational circuits: We find eigenstates by finding joint roots of a polynomially growing number of properties of the quantum state as covariance functions between the Hamiltonian and an operator pool of our choice. |
Balint Koczor; Gregory Boyd; |
| 407 | Measurement Based Quantum Algorithm for Ground State Preparation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation we will present a quantum algorithm for state preparation that uses time evolution along with repeated measurement scheme to obtain the ground state of a Hamiltonian with known energies for the ground and first excited state. |
Alessandro Baroni; Joseph Carlson; Ionel Stetcu; |
| 408 | Bootstrap Embedding on A Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an iterative algorithm to solve the optimization problem using a quantum subroutine as an eigensolver to solve each fragment Hamiltonian. |
Yuan Liu; Zachary Chin; Oinam Meitei; Arkopal Dutt; Max Tao; Troy Van Voorhis; Isaac Chuang; |
| 409 | Quantum Computation for Periodic Solids in Second Quantization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a quantum algorithm for ground-state energy calculations of periodic solids on error-corrected quantum computers. |
Christoph Sünderhauf; Aleksei Ivanov; Nicole Holzmann; Tom Ellaby; Rachel Kerber; Glenn Jones; Joan Camps; |
| 410 | Quantum Cellular Automata As Quantum Fields: Interactions, Locality, and Negative Energy States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, adding a local interaction between bosonic and fermionic QCAs reveals a tension between locality (in the strong sense of QCAs) and positive energy: QCAs generically have both positive and negative energy solutions, and local interactions will in general excite both, making the “vacuum” unstable to cascades of positive- and negative-energy particle creation. We discuss the source of this conflict, and possible methods to overcome it, as well as the relationship between the strong notion of locality in QCAs and weaker notions in quantum field theories. |
Todd Brun; Leonard Mlodinow; |
| 411 | Entanglement Entropy in Timelike Slices: A Free Fermion Study Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We define the entanglement entropy of a quantum state in a discrete set of points in an arbitrary spacetime slice, and give the explicit formula for free fermions. |
Bowei Liu; Hao Chen; Biao Lian; |
| 412 | Spacetime Mutual Information Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: An immediate obstacle in generalizing quantum mutual information to time-like separated regions is that such regions are described by two different Hilbert spaces, which makes it less obvious to define what entanglement is. In this talk I will introduce a spacetime generalization of mutual information that overcomes this obstacle and generalizes several of the properties of standard mutual information; in particular it bounds spacetime correlation functions. |
Paolo Glorioso; |
| 413 | The Quantum Space-Time Loophole in Quantum Foundations: An Interferometric Probe with Quantum Metrology Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This incredible level of precision is now reachable by use of novel quantum metrology in laser interferometers, which can improve on the latest LIGO technology by as much as an order of magnitude. We present a research program to study this frontier, and a brief overview of our experiment currently being commissioned at Cardiff University. |
Ohkyung Kwon; Sander Vermeulen; William Griffiths; Abhinav Patra; Alasdair James; Aldo Ejlli; Lorenzo Aiello; Eyal Schwartz; Keiko Kokeyama; Katherine Dooley; Craig Hogan; Hartmut Grote; |
| 414 | Numerical Investigations of Symmetric Informationally Complete POVMs Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, it has been conjectured that it is already enough to satisfy only 3d/2 of the defining equations to find a solution [Appleby, Dang, and Fuchs, Entropy 16, 1484 (2014)]. In this talk, I will present the most up-to-date numerical findings with regard to this conjecture. |
Ghislaine Coulter-de Wit; |
| 415 | The Group Inverse for Quantum Information Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In the more general case, frame theory offers a framework for constructing the appropriate linear transformation. |
Matthew Weiss; |
| 416 | Efficient Quantum Description of Probabilistic Data Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we investigate contextuality as a resource for quantum communication. |
Lawrence Cohen; Angela Karanjai; |
| 417 | No-Go Theroems in Modal Quantum Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Other results, such as the no-hiding theorem, are actually false in MQT. This talk gives a brief overview of these results. |
Benjamin Schumacher; Michael Westmoreland; Phillip Diamond; |
| 418 | Interpretation of Quantum Theory: The Quantum "grue-bleen" Problem Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a general framework applicable to many kinds of dynamical theories, asking whether a system’s state and time evolution alone can support non-trivial interpretational statements. |
Michael Westmoreland; |
| 419 | Properties of The Probability Current in Purely Probabilistic Representations of Quantum Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will consider analogous properties for a purely probabilistic representation of the same setting, i.e., one with true-blue probabilities. |
Sachin Gupta; |
| 420 | The Grasshopper Problem Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We find that at smaller jump distances the optimal lawns resemble cogwheels, similarly to the planar case. |
David Llamas; Olga Goulko; Adrian Kent; Dmitry Chistikov; Mike Paterson; |
| 421 | Optimization and Comparison of Two-node Gaussian Quantum Networks with Optical-Microwave Transducers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Achieving quantum communication between two remote microwave nodes connected via an optical link will require quantum transducers, many of which can be modeled as two-mode Gaussian quantum channels between optical and microwave modes. We propose a method for finding the optimal network for distributing microwave-microwave entanglement under certain restrictions, such allowing only Gaussian resources in the optical domain. |
Akira Kyle; Curtis Rau; Alex Kwiatkowski; John Teufel; Konrad Lehnert; Tasshi Dennis; |
| 422 | Microwave to Optical Transduction Via Engineered Dissipation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a quantum transduction scheme between microwave and optical frequencies via engineering suitable interactions with dissipative atomic levels. |
Chiao-Hsuan Wang; |
| 423 | Pump ‘n’ Dump – High Fidelity Communication with Lossy Microwave Links: Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Short-distance modular quantum networks allow us to build more complex quantum devices from simpler ones, provided we are not limited by our interconnects. Superconducting cavity … |
Neel Thakur; James Teoh; Nathanael Cottet; Patrick Winkel; Luke Burkhart; Luigi Frunzio; Robert Schoelkopf; |
| 424 | Pump ‘n’ Dump – High Fidelity Communication with Lossy Microwave Links: Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work shows standing wave mode communication channels are a useful and still largely unexplored paradigm for near-term modular devices. |
James Teoh; Neel Thakur; Nathanael Cottet; Patrick Winkel; Luke Burkhart; Luigi Frunzio; Robert Schoelkopf; |
| 425 | Deterministic Generation of Shaped Single Microwave Photons Using A Parametrically Driven Coupler Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For this purpose, deterministically encoding the state of a stationary qubit into a travelling photon is of great interest. Here we introduce a superconducting circuit consisting of a data qubit and an emitter qubit coupled to a quantum channel, with a coupler between them to parametrically exchange quantum state. |
Jiaying Yang; Axel Eriksson; Aamir Mohammed Ali; Ingrid Strandberg; Claudia Castillo Moreno; Daniel Perez Lozano; Per Delsing; Per Persson; Simone Gasparinetti; |
| 426 | Teleportation-based Microwave-optical Quantum Transduction Enhanced By Squeezing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we explore the role ofsqueezing in teleportation-based transduction protocoland identify a signifi cant performance boost viaevaluating quantum capacity lower and upper bounds.Our analyses includes both microwave squeezing andoptical squeezing, and provides a systematicalbenchmark between teleportation-based approach anddirect-conversion approach. |
JING WU; Linran Fan; Quntao Zhuang; |
| 427 | Bidirectional Multi-photon Communication Between Remote Superconducting Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate bidirectional multiphoton transfers between two remote tunable resonators in a superconducting system, enabling single-pass on-demand transfers of photon superposition states. |
Joel Grebel; Gustav Andersson; Ming-Han Chou; Christopher Conner; Yash Joshi; Jacob Miller; Rhys Povey; Hong Qiao; Xuntao Wu; Haoxiong Yan; Andrew Cleland; |
| 428 | Optimal Input States for Quantifying The Performance of Continuous-variable Unidirectional and Bidirectional Teleportation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper, we detail an analytical approach for determining optimal input states for quantifying the performance of CV unidirectional and bidirectional teleportation. |
Hemant Mishra; Mark Wilde; Samad Oskouei; |
| 429 | Cavity Piezomechanics for Microwave-Optical Quantum Transduction and Network Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present experimental efforts on integrated superconducting piezo-optomechanical transducers with simultaneous electromechanical and optomechanical cavity enhancement and demonstrate bidirectional linear photon conversion between microwave and optics. |
Xu Han; Changchun Zhong; Joseph Petrullo; Wei Fu; Mingrui Xu; Hong Tang; Liang Jiang; |
| 430 | Transfer of Squeezing and Entanglement Near The Exceptional Points of Three Coupled Superconducting Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe that the rich structure of branches yielding EPs can be used to identify regions in the parameter space that favor a fast and stable transfer of squeezing, entanglement, and the reset of the system. |
Wallace Santos Teixeira; Vasilii Vadimov; Timm Mörstedt; Suman Kundu; Mikko Möttönen; |
| 431 | On-demand Generation of Quantum Photonic Resource States Using A Phononic Memory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a scheme for on-demand single photon generation through optomechanical readout of phononic resonator arrays which buffer single-phonon states. |
Margaret Pavlovich; Peter Rakich; Shruti Puri; |
| 432 | Ultrahigh-Q On-chip Silicon-germanium Microresonators for Quantum Transduction Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: As an entirely monocrystalline photonics platform, Si 1-xGe x/Si has exceptionally low losses in both microwave [1] optical [2] and domains, with internal optical quality factors … |
Abram Falk; |
| 433 | A Compiler Framework for Enabling Collective Communication in Distributed Quantum Programs Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will introduce our recent work on compiler support for distributed quantum computers. |
Yufei Ding; |
| 434 | Improving Quantum Circuits with Heterogenous Gatesets Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will present some theoretical as well as experimental evidence that a small expansion of available gatesets will greatly improve the quality of circuits on near-term hardware. |
Ali Javadi-Abhari; |
| 435 | Architecture and System-Level Solutions for Real-Time Decoding in Fault-Tolerant Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will discuss the role of micro-architecture and system-level optimizations to improve the performance and scalability of decoders. |
Das Poulami; |
| 436 | Quantum Computing with Differentiable Quantum Transforms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This talk will focus on the concept of differentiable quantum transforms, which are metaprograms that manipulate quantum programs in a way that preserves their differentiability. |
Olivia Di Matteo; |
| 437 | Surface Code Compilation Via Edge-disjoint Paths Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We provide an efficient algorithm to compile quantum circuits for fault-tolerant execution. |
Eddie Schoute; Michael Beverland; Vadym Kliuchnikov; |
| 438 | Highly Optimized Quantum Circuits Synthesized Via Data-flow Engines Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we demonstrate a use case for Field Programmable Gate Array (FPGA) based data-flow engines (DFEs) to scale up optimization based quantum compilers to synthesize circuits up to 10-qubit unitaries. |
Zoltan Zimboras; Peter Rakyta; Gregory Morse; Oskar Mencer; |
| 439 | Accelerating Quantum Algorithms with Resource States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In some cases, however, it is natural to allow a quantum algorithm access to a pre-prepared pool of resource states. In this talk, I consider an alternative cost model that neglects the cost of preparing (but not storing) such a pool of resource states. |
William Huggins; |
| 440 | Improving Performance and Debuggability of Variational Quantum Algorithms Using Compressed Sensing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present OSCAR (cOmpressed Sensing based Cost lAndscape Reconstruction) to help researchers configure: 1) correct initialization, 2) noise mitigation techniques, and 3) classical optimizers to avoid barren plateaus and maximize the quality of the solution on NISQ hardware. |
Kun Liu; Tianyi Hao; Swamit Tannu; |
| 441 | Approximate Classical Simulation of Noisy Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose various approaches to reduce the simulation complexity at a cost of introducing numerical error in the final simulation result. |
Danylo Lykov; Yuri Alexeev; William Berquist; Minzhao Liu; |
| 442 | Quantum Circuit Un-optimization As A Benchmark Task for Quantum Compilers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Compilation of large complex quantum circuits into simpler ones is an essential task to fully exploit the power of quantum computers. In this work, we consider an opposite task: "quantum circuit un-optimization (QCU)", which makes a circuit more redundant while preserving its functionality. |
Yusei Mori; Hideaki Hakoshima; Kyohei Sudo; Toshio Mori; Kosuke Mitarai; Keisuke Fujii; |
| 443 | Evermore Optimized Simulations of Fermionic Systems on A Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present an advanced compilation and optimization technique to reduce the number of two-qubit entangling gates used for the simulation of fermonic interactions on a quantum computer. |
Qingfeng Wang; Ze-Pei Cian; Ming Li; Igor Markov; Yunseong Nam; |
| 444 | Crossing The QASM: Gate Level Compilation for Practical Quantum Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Towards standardization of programming languages to describe quantum circuit models we must indeed be able to link applications to pulse-level languages, which are highly dependent on the underlying physical system. |
Yonatan Cohen; Dor Israeli; Yonatan Rosmarin; |
| 445 | A Language-oriented Approach to Exchange-only Silicon Dot Qubit Software Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our quantum computing software stack called Quiver, we have progressed on developing a series of new programming languages—called Coalton, Quil-E, PulseScript, and PulseIR—to provide more direct ways of writing flexible, expressive, and optimized experimental code for silicon dot qubit experiments. |
Robert Smith; |
| 446 | A Software Framework for Scalable Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show how the software is used to implement quantum error correction using surface code. |
Kent Shirer; Clemens Müller; Andreas Messner; Edward Kluender; Zhixin Wang; Tino Wagner; Donjan Rodic; Markus Emmenegger; Konstantin Korotkov; Jan Lienemann; Chi-Huan Nguyen; Pol Welter; |
| 447 | Efficient Compiling of Quantum Programs Using Experimentally Demonstrated Global Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Indeed, it has been experimentally demonstrated that such global instructions can be implemented with little additional complication over that required to implement a single two-qubit gate. In this talk, I will briefly discuss how one can implement such a global native gate at a high level. |
Yunseong Nam; |
| 448 | Resource Requirements for Observable Estimation, Enabled By QuPython Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will present an analysis of the resources required to estimate observables in the quantum simulation of a first principles model for a condensed phase system. |
Antonio Russo; Nathan Arnold; Stefan Seritan; Shivesh Pathak; Andrew Baczewski; |
| 449 | Very Large Scale Quantum Circuit Optimisation Using Alternative Circuit Representations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work we present is, to the best of our knowledge, the first method that is able to easily compile and optimize very wide and deep quantum circuits. |
Ioana Moflic; Vikas Garg; Alexandru Paler; |
| 450 | Optimal Quantum Control for Transmons with Reinforcement Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe a reinforcement learning algorithm to optimize gate control pulses with built in error-mitigation specifically targeting leakage errors in superconducting transmon qubits. |
Emily Wright; Rogério de Sousa; |
| 451 | Realizing A Deep Reinforcement Learning Agent Discovering Real-time Feedback Control Strategies for A Quantum System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the agent’s performance for high-fidelity, low-fidelity and three-level readout, and compare with simple strategies based on thresholding. This demonstration motivates further research towards adoption of reinforcement learning for real-time feedback control of quantum devices and more generally any physical system requiring learnable low-latency feedback control. |
Jonas Landgraf; Kevin Reuer; Thomas Foesel; James O’Sullivan; Liberto Beltrán; Abdulkadir Akin; Graham Norris; Ants Remn; Michael Kerschbaum; Jean-Claude Besse; Florian Marquardt; Andreas Wallraff; Christopher Eichler; |
| 452 | Data-Driven Qubit Characterization and Optimal Control Using Deep Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, such approaches do not support the use of gradient-based optimization algorithms, because the estimation of gradients by finite differences can require too many measurements. I will present a hybrid data driven method to address this problem, in which a surrogate model is obtained by training a RNN to predict the observed measurement outcomes after executing random pulses. |
Paul Surrey; Julian Teske; Tobias Hangleiter; Pascal Cerfontaine; Hendrik Bluhm; |
| 453 | Combining Machine-learning Characterization and Quantum Optimal Control to Improve Superconducting Qubit Operations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantum optimal control theory offers a powerful toolbox to design pulse shapes that can realize, in numerical simulations, desired quantum operations with extremely high fidelity. |
Elie Genois; Noah Stevenson; Gerwin Koolstra; Irfan Siddiqi; Alexandre Blais; |
| 454 | Recommender System Expedited Quantum Control Optimization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose and demonstrate the use of a machine learning method, specifically the recommender system (RS), to deal with the challenge of enhancing computational efficiency. |
Priya Batra; |
| 455 | Neural Network Accelerator for Universal Quantum Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate a machine learning algorithm for predicting optimal pulse parameters. |
A. Baris Ozguler; Giuseppe Di Guglielmo; Manuel Blanco Valentín; David Xu; Nhan Tran; Gabriel Perdue; Luca Carloni; Farah Fahim; |
| 456 | Control, Gates, and Error Correction of GKP Codes in Bosonic CQED Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recent experimental milestones include the preparation and real-time error correction of the GKP code in trapped-ion and circuit quantum electrodynamics (cQED) architectures [2-6]. In this talk, I will review the bosonic cQED experiments that have led to some of these recent advances, focusing on the engineering of tools needed for error correction of the GKP code [2] and how the same tools can be used for universal control of an oscillator with weak dispersive coupling to a qubit [5]. |
Alec Eickbusch; Andy Ding; Benjamin Brock; Volodymyr Sivak; Shraddha Singh; Baptiste Royer; Suhas Ganjam; Salvatore Elder; Shantanu Jha; Jayameenakshi Venkatraman; Stijn de Graaf; Benjamin Chapman; Ioannis Tsioutsios; Alessandro Miano; Luigi Frunzio; Shruti Puri; Steven Girvin; Robert Schoelkopf; Michel Devoret; |
| 457 | FPGA-based Signal Generation and Readout of SNSPD Signals for Quantum Communication Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate that using the digital-to-analog converters of the FPGA is comparable to commercial arbitrary waveform generators (AWG) by characterizing the coincidence-to-accidental ratio (CAR) and the entanglement visibility of the entangled photon-pair source in the x-basis. |
Christina Wang; |
| 458 | Real-time Fast Feedback Experiment Enabled By A Customized FPGA-Based Control System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A quantum control system is crucial for precise and reliable quantum computations. We developed a customized FPGA-based control system with the quantum control processor at its core. |
Anastasiia Butko; Yilun Xu; Gang Huang; Ravi Naik; David Santiago; Irfan Siddiqi; |
| 459 | QubiC Update, The Flexible Full Stack Quantum Bit Control System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The QubiC is an open source quantum bit control system based on the software defined radio concept and utilizes advanced Field programmable gate array (FPGA) together with low noise analog front end modules. This system provides a full stack control solution from the hardware to the software API. |
Gang Huang; Yilun Xu; Neelay Fruitwala; Ravi Naik; Kasra Nowrouzi; David Santiago; Irfan Siddiqi; |
| 460 | Distributed Processor for FPGA-based Superconducting Qubit Control Using QubiC Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Together, these features allow a user to program arbitrary control flow within a quantum circuit based on previous measurement results. In this presentation, we will detail our design, describe its integration with the QubiC control stack, and demonstrate the processor’s capabilities with a simple mid-circuit measurement and feedback experiment using transmon qubits at the LBL AQT (advanced quantum testbed). |
Neelay Fruitwala; Gang Huang; Yilun Xu; Ravi Naik; Kasra Nowrouzi; David Santiago; Irfan Siddiqi; |
| 461 | Driving A Two-qubit Gate Between Transmons Using Digitally Reconfigurable Cryogenic CMOS Control Electronics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present experimental results on a two-qubit cross resonance gate generated from a CMOS control chip, that is thermalized to the 4K stage of a dilution refrigerator. |
Joseph Glick; Devin Underwood; Ken Inoue; Sudipto Chakraborty; David Frank; Kevin Tien; Pat Rosno; Mark Yeck; Raphael Robertazzi; John Timmerwilke; Chris Baks; Donald Bethune; Thomas Fox; Vincent Diluoffo; Scott Lekuch; John Bulzachelli; Daniel Ramierez; Rajiv Joshi; Brian Gaucher; Daniel Friedman; |
| 462 | Control of A 2-qubit Superconducting Quantum Processor Unit-cell Using A Cryogenic CMOS Integrated Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we describe the design and characterization of a low-power prototype cryo-cmos 2-qubit XYZ controller for full-control of a Sycamore quantum processor unit-cell. |
Juhwan Yoo; Zijun Chen; Frank Arute; Shirin Montazeri; Marco Szalay; Catherine Erickson; Evan Jeffrey; Reza Fatemi; Marissa Giustina; Markus Ansmann; Erik Lucero; Julian Kelly; Joseph Bardin; |
| 463 | Wigner State and Process Tomography on Near-Term Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an experimental scanning-based tomography approach in the context of finite-dimensional Wigner representations. |
Amit Devra; Niklas Glaser; Dennis Huber; Steffen Glaser; |
| 464 | Markovianization Through Dynamical Decoupling in Randomized Benchmarking Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate the effectiveness of incorporating Dynamical Decoupling (DD) [1,2] and Randomized Benchmarking (RB) [3,4], two of the most user-friendly protocols known hitherto, to simultaneously consume temporal correlations, i.e., non-Markovianity, and predict average gate fidelities of effectively Markovianized noise. |
Pedro Figueroa Romero; Miha Papic; Adrian Auer; Inés de Vega; Kavan Modi; Min-Hsiu Hsieh; |
| 465 | Robust Witnesses of Genuine Multiparticle Indistinguishability Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The dynamics of noninteracting bosons has attracted interest due to the BosonSampling problem and its computational difficulty. A challenge in experimental systems implementing these dynamics is verifying that the output distributions are close to the desired ones. |
Shawn Geller; Emanuel Knill; Scott Glancy; |
| 466 | A Randomized Benchmarking Suite for Mid-circuit Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a mid-circuit measurement benchmarking suite developed from the ubiquitous paradigm of randomized benchmarking. |
Luke Govia; Petar Jurcevic; Seth Merkel; David McKay; |
| 467 | Good Models for Noisy Mid-circuit Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Mid-circuit measurements can be modeled by quantum instruments — a particular kind of quantum channel — but like process matrices, instruments don’t lend themselves to intuition. Here, we construct new models and metrics for errors in mid-circuit measurements, inspired by the error generator representation of errors in logic gates, and show how to use these models for better characterization and simulation of realistic errors in mid-circuit measurements. |
Robin Blume-Kohout; Timothy Proctor; Kevin Young; Kenneth Rudinger; |
| 468 | Tomographic Characterization of Quantum Gates with Error Amplification Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose a new data-processing method (estimator) for quantum tomographic protocols with error-amplification, which enables us to reduce computational cost and instability of data-fitting. |
Takanori Sugiyama; |
| 469 | Quantifying The Imperfection for Non-trace-preserving Quantum Operations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a generic metric to compare two non-trace-preserving quantum operations. |
Yu Shi; Edo Waks; |
| 470 | Efficient Online Quantum Gate Set Diagnosis By Fast-Bayesian Tomography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate the experimental approach of running the FBT online, which allows the model to be updated as experiment data obtained. |
Yue Su; Yue Huang; MengKe Feng; Nard Dumoulin Stuyck; Tuomo Tanttu; Andre Saraiva; Henry Yang; Wee Han Lim; Kok Wai Chan; William Gilbert; Fay Hudson; Arne Laucht; Andrew Dzurak; |
| 471 | Randomized Benchmarking Into The Quantum Advantage Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will present scalable RB protocols that can benchmark universal gate sets, mid-circuit measurements, and compiler performance. |
Jordan Hines; Daniel Hothem; Marie Lu; Ravi Naik; Akel Hashim; Jean-Loup Ville; Brad Mitchell; John Mark Kreikebaum; David Santiago; Stefan Seritan; Erik Nielsen; Robin Blume-Kohout; Kevin Young; Irfan Siddiqi; Birgitta Whaley; Timothy Proctor; |
| 472 | Benchmarking Quantum Logic Operations for Achieving Fault Tolerance Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, thresholds for fault-tolerant quantum error correction are given in terms of worst-case error rates — defined via the diamond norm — which can differ from average error rates by orders of magnitude. One method for resolving this discrepancy is to randomize the physical implementation of quantum gates, using techniques like randomized compiling (RC). |
Akel Hashim; Stefan Seritan; Timothy Proctor; Kenneth Rudinger; Noah Goss; Ravi Naik; John Mark Kreikebaum; David Santiago; Irfan Siddiqi; |
| 473 | Learning Quantum Dynamics: Lindblad Operators from Classical Shadows Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use the least square method for the estimation of a channel where, for fixed inputs, we estimate the outputs by classical shadows. |
Atithi Acharya; Siddhartha Saha; Shagesh Sridharan; Yanis Bahroun; Anirvan Sengupta; |
| 474 | Efficient Gate Set Tomography Using Compressed Sensing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our aim is to create a super-efficient version of GST that uses fast analysis on data from a practical number of circuits, and which is practical well beyond the 1-3 qubit regime in which conventional GST is feasible. |
Timothy Proctor; Corey Ostrove; Daniel Hothem; Stefan Seritan; Kenneth Rudinger; Kevin Young; Robin Blume-Kohout; |
| 475 | Randomized Benchmarking Beyond Groups Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we formulate the universal randomized benchmarking (URB) framework which does away with the group structure and also replaces the recovery gate plus measurement component with a general "post-processing" POVM. |
Dawei Ding; Jianxin Chen; Cupjin Huang; |
| 476 | Exponentially Tighter Bounds on Quantum Error Mitigation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We start out by presenting a formal framework that rigorously encapsulates large classes of meaningful and practically applied schemes for quantum error mitigation, including virtual distillation, Clifford data regression, zero-noise extrapolation and probabilistic error cancellation. |
Sumeet Khatri; Yihui Quek; Johannes Meyer; Daniel França; Jens Eisert; |
| 477 | Dynamical Uncertainty Propagation with Noisy Quantum Parameters Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Rev. Lett. 128, 150503 (2022)], we evade both these drawbacks by incorporating propagation of uncertainty directly into simulations of quantum dynamics, thereby obtaining a method that is orders of magnitude faster than Monte Carlo simulations and directly provides information on how each uncertainty parameter influences the system dynamics. |
Felix Motzoi; Carrie Weidner; Mogens Dalgaard; |
| 478 | Error Mitigation Thresholds in Random Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that noisy random quantum circuit models with imperfectly characterized noise can exhibit a disorder-driven error mitigation threshold at a finite rate of disorder. |
Michael Gullans; Sarang Gopalakrishnan; Pradeep Niroula; |
| 479 | Quancorde: Boosting Quantum Fidelity with An Ordered Diverse Ensemble of Clifford Canary Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This paper aims to boost quantum fidelity with Clifford canary circuits, by proposing Quancorde: Quantum Canary Ordered Diverse Ensembles, a fundamentally new approach to identifying the correct outcomes of extremely low-fidelity quantum applications. |
Gokul Subramanian Ravi; Jonathan Baker; Kaitlin Smith; Nathan Earnest; Ali Javadi-Abhari; Frederic Chong; |
| 480 | Logical Error Rates for The Variational Quantum Eigensolver Using A [[4,2,2]] Encoded Ansatz Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Application benchmarks that run on noisy intermediate scale quantum computing (NISQ) devices require techniques for detecting and mitigating errors to assess accuracy and performance. Quantum error detection codes offer a framework in which to encode these computations and track the presence of errors, but the subsequent logical error rate depends on the application circuit as well as the underlying hardware noise. |
Meenambika Gowrishankar; Daniel Claudino; Alex McCaskey; Jerimiah Wright; Travis Humble; |
| 481 | Hypothesis Testing for Error Mitigation: How to Judge Error Mitigation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we utilize a statistical hypothesis testing procedure to answer questions (a) and (b). |
Abdullah Ash Saki; Salonik Resch; George Umbrarescu; Archismita Dalal; Amara Katabarwa; |
| 482 | Exponential Error Suppression Techniques for Near-Term Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Suppressing noise in physical systems is of fundamental importance. As quantum computers mature, quantum error correcting codes (QECs) will be adopted in order to suppress errors … |
Balint Koczor; |
| 483 | Universal Framework for Simultaneous Tomography of Quantum States and Measurement Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a general denoising algorithm for performing quantum tomography in the presence of detector noise. |
Sidhant Misra; Abhijith Jayakumar; Stefano Chessa; Marc Vuffray; Andrey Lokhov; Carleton Coffrin; |
| 484 | Post-selection-free Preparation of High-quality Physical Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will present a family of quantum circuits that prepare high-quality |0⟩ states without post-selection, instead using CNOT and Toffoli gates to non-linearly permute the computational basis. |
Ben Barber; |
| 485 | Quantum Error Mitigation By Pauli Check Sandwiching Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe and analyze an error mitigation technique that uses multiple pairs of parity checks to detect the presence of errors. |
Alvin Gonzales; Ruslan Shaydulin; zain Saleem; Martin Suchara; |
| 486 | Quantum Error Mitigation Via Quantum-Noise-Effect Circuit Groups Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we develop our quantum-error-mitigation (QEM) scheme for quantum computational errors induced by quantum noise effects (decoherence effects) with using ensembles of quantum circuits called “quantum-noise-effect circuit groups”, which enable us to estimate the quantum computational errors. |
Yusuke Hama; Hirofumi Nishi; |
| 487 | Q-Trainer: A Software Package for Training Variational Quantum Algorithms with Quantum Error Mitigation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, currently, it requires much domain knowledge (of both VQA and QEM) to apply QEM to VQA in practice, making QEM less accessible to beginners in quantum computing. Motivated by this, we developed Q-Trainer, a Python package with high-level API for VQA training with QEM. |
Min Li; Haoxiang Wang; |
| 488 | Keyldysh Assisted Evaluation of Decoherence Errors in Driven Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, when correlated noise (both classical and quantum) is present and when the qubit is driven by a short pulse, the Lindblad master equation is not sufficiently accurate. To overcome this obstacle, we develop a more accurate estimation tool based on the Keldysh expansion. |
Ziwen Huang; Yunwei Lu; Alexander Romanenko; Anna Grassellino; Jens Koch; Shaojiang Zhu; |
| 489 | Silicon T Centre Devices for Quantum Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate new levels of integration by characterizing T centres in single-mode waveguide devices in SOI including nanophotonic cavities. |
Daniel Higginbottom; |
| 490 | Waveguide-integrated Silicon T Centres Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate optical control of the T centre spin ensembles and measure long spin lifetimes. |
Adam DeAbreu; Camille Bowness; Amirhossein Alizadeh; Camille Chartrand; Nicholas Brunelle; Evan MacQuarrie; Nicholas Lee-Hone; Myles Ruether; Moein Kazemi; Alex Kurkjian; Sjoerd Roorda; Nikolai Abrosimov; Hans-Joachim Pohl; Michael Thewalt; Daniel Higginbottom; Stephanie Simmons; |
| 491 | High-throughput Search for Defect-based Qubits in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using first-principles methods, we performed a high-throughput search for point defects (substitutions and interstitials) in silicon that are thermodynamically stable, with accessible charge states, and optically active. |
Yihuang Xiong; Diana Dahliah; Céline Bourgois; Sinead Griffin; Alp Sipahigil; Geoffroy Hautier; |
| 492 | Spin Control of A Tin Vacancy Center in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present progress toward high fidelity spin gates in photonic integrated devices. |
Eric Rosenthal; Hannah Kleidermacher; Abigail Stein; Alison Rugar; Daniel Riedel; Hope Lee; Jakub Grzesik; Shahriar Aghaeimeibodi; Kasper Van Gasse; Christopher Anderson; Jelena Vuckovic; |
| 493 | Probing Spin-phonon Interactions in Silicon Vacancy Centers Via Surface Acoustic Waves Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We attempt to enhance the emission rate of phonons from an SiV into measurable mechanical modes by engineering the local phononic density of states around the SiV. |
Eliza Cornell; Sophie Weiyi Ding; Benjamin Pingault; Zhujing Xu; Marko Loncar; |
| 494 | Mechanical Control of A Single Nuclear Spin in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work demonstrates the use of mechanical waves for complex quantum control sequences on single electronic and nuclear spins, offers an advantageous alternative to the standard electromagnetic control of nuclear spins, and opens prospects to interface silicon-vacancy center spins and nuclear spins with mechanical resonators towards the single phonon regime. |
Benjamin Pingault; Smarak Maity; Graham Joe; Michelle Chalupnik; Daniel Assumpcao; Eliza Cornell; Linbo Shao; Marko Loncar; |
| 495 | Towards High-fidelity Gates for Spin Qubits in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we use two-qubit gate set tomography (GST) to characterize and optimize gate fidelities for spin qubits in diamond. |
Jiwon Yun; Hans Bartling; Luc Enthoven; Kai-Niklas Schymik; Margriet van Riggelen; Macoud Babaie; Fabio Sebastiano; Tim Hugo Taminiau; |
| 496 | Electronic Structure, Spin Properties, and Charge State Stability of The Negatively Charged Nickel Vacancy Center in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate creation of NiV- centers in both type IIa and IIb diamond via ion-implantation and high-temperature high-pressure annealing. |
Ian Morris; Kai Klink; Logan Crooks; Leeju Singh; David Hardeman; Ofer Firstenberg; Shannon Nicley; Eilon Poem; Jonas Becker; |
| 497 | Discriminating Nuclear Spins in An Electronic Environment Over Several Nanometers and Several Hundred Nuclei Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we experimentally demonstrate a new method to discriminate nuclear spins surrounding an electron spanning several nanometers and involving several hundred nuclei. |
Noella D’Souza; Kieren Harkins; David Marchiori; Paul Schindler; Emanuel Druga; Maxwell McAllister; Marin Bukov; Ashok Ajoy; |
| 498 | Diamond Bullseye Antennas for Enhanced Quantum Collection Efficiency Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Unfortunately, the host materials for these applications present high intrinsic optical indexes, limiting photon collection due to total internal reflection. In this work, we demonstrate improved collection efficiencies from these color centers with the use of photonic structures, paving the way for efficient communication and sensing protocols. |
Anchita Addhya; Clayton DeVault; Zixi Li; Xinghan Guo; Nazar Delegan; David Awschalom; F. Joseph Heremans; Alexander High; |
| 499 | All Optical Initialisation and Readout and Coherent Population Trapping of A Single Germanium Vacancy in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate the capability to address the spin sub-levels of the germanium vacancy and thus, perform all optical spin initialisation and readout. |
Chris Adambukulam; Hyma Vallabhapurapu; Brett Johnson; Andrea Morello; Arne Laucht; |
| 500 | Manipulating Charge States in Diamond Via Resonantly-driven Near-field Interactions with Proximal Germanium Vacancies Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on the local manipulation of the charge state of vacancies in diamond, where the resonant excitation of a proximal germanium-vacancy (GeV) center provides a local energy source to charge and discharge the vacancy. |
Zixi Li; Xinghan Guo; Francesco Andreoli; Yu Jin; Anil Bilgin; Giulia Galli; Darrick Chang; Alexander High; |
| 501 | Formation of Shallow Indium Donor Qubits in ZnO Via Ion Implantation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we controllably introduce In 0 Zn into ZnO as a donor via ion implantation and post-implantation annealing. |
Xingyi Wang; Christian Zimmermann; Michael Titze; Lasse Vines; Vasileios Niaouris; Samuel D’Ambrosia; Ethan Hansen; Edward Bielejec; Kai-Mei Fu; |
| 502 | Toward A Scalable and High-fidelity Quantum Computing System with Fluxonium Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, advancements in several aspects, including device fabrications for a high qubit yield, maintaining high coherence while allowing for fast operations, and enabling a scalable processor architecture, are still needed before fluxonium can be adopted as a mainstream of choice. At Alibaba Quantum Laboratory, we study these problems using a full-stack approach: from searching robust new materials for the superinductor, to investigating the decoherence mechanisms of the qubit, and lastly to exploring quantum instruction sets for a fluxonium quantum processor to improve system performance. |
Chunqing Deng; |
| 503 | The Cold Echo Qubit: A Novel Small Logical Qubit Architecture Inspired By AC-Driven Quantum Annealing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe a novel superconducting logical qubit architecture, called the Cold Echo Qubit (CEQ), which is capable of preserving quantum information for much longer timescales than any of its component parts. |
Eliot Kapit; Vadim Oganesyan; |
| 504 | An Architecture for High-Fidelity, Robust Two-Qubit Fluxonium Gates with A Transmon Coupler Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present an architecture consisting of fluxonium qubits coupled via a tunable-transmon coupler (FTF, for fluxonium-transmon-fluxonium). |
Leon Ding; Max Hays; Youngkyu Sung; Bharath Kannan; Junyoung An; Agustin Di Paolo; Roni Winik; Kate Azar; Thomas Hazard; David Kim; Bethany Niedzielski; Alexander Melville; Mollie Schwartz; Jonilyn Yoder; Devin Underwood; Terry Orlando; Simon Gustavsson; Jeffrey Grover; Kyle Serniak; William Oliver; |
| 505 | Small-scale Quantum Processor with Heavy-Fluxonium Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we will discuss our implementation of a two-qubit fluxonium gate and experiments to characterize and optimize high-fidelity readout. |
Gaurav Bothara; Kishor Salunkhe; Meghan Patankar; Rajamani Vijayaraghavan; |
| 506 | Measurement of Planar Fluxonia Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Superconducting qubits are a promising approach to realizing quantum computers. One challenge to this realization is the finite coherence times of these qubits. Fluxonium, with … |
Kate Azar; Kyle Serniak; Thomas Hazard; Leon Ding; Agustin Di Paolo; Max Hays; Junyoung An; Ilan Rosen; David Kim; Bethany Niedzielski; Alexander Melville; Jeffrey Grover; Mollie Schwartz; Jonilyn Yoder; William Oliver; |
| 507 | Experimental Investigation of A Protected Qubit Subspace Within A Fluxonium Molecule Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present our recent progress, including working towards accessing full flux quanta along both control axes. |
Shashwat Kumar; Xanthe Croot; Sara Sussman; Xinyuan You; Anjali Premkumar; Tianpu Zhao; Jens Koch; Andrew Houck; |
| 508 | Towards High-fidelity Two-qubit Gates on Strongly Coupled Fluxonium Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate the implementation of controlled-Z gate utilizing strong coupling between two fluxoniums, where the large induced static ZZ term can still be cancelled. |
Wei-Ju Lin; Haonan Xiong; Vladimir Manucharyan; |
| 509 | Mitigation of ZZ Coupling on Fluxonium-based Multiqubit Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will analyze the reduction of ZZ coupling in multi-fluxonium systems with capacitive interactions between qubits. |
Rafael Alapisco; Maxim Vavilov; |
| 510 | Improving T1 in Dielectric-loss-limited Fluxonium Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Utilizing the same approach, we present a study of the coherence properties of fluxonium while being informed by the material surface participation ratio of the electric field in tantalum. |
Parth Jatakia; Jacob Bryon; Anjali Premkumar; Lev Krayzman; Shashwat Kumar; Nathalie de Leon; Andrew Houck; |
| 511 | Dephasing in Fluxonium Qubits from Coherent Quantum Phase Slips Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we focus on one dephasing mechanism inherent to Josephson junction arrays which arises from the Aharonov-Casher effect and can limit fluxonium coherence times in circuits with large superinductors. In this talk, we report coherence times in fluxonium qubits specifically engineered to be sensitive to this dephasing mechanism and compare with theoretical models. |
Kyle Serniak; Thomas Hazard; Agustin Di Paolo; Kate Azar; Leon Ding; Max Hays; Junyoung An; Ilan Rosen; David Kim; Alexander Melville; Bethany Niedzielski; Jeffrey Grover; Mollie Schwartz; Jonilyn Yoder; William Oliver; |
| 512 | Optimized Readout of A Fluxonium Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose to exploit the features in the dispersive shift to improve qubit readout using fast flux pulsing. |
Taryn Stefanski; Siddharth Singh; Figen Yilmaz; Martijn F. S. Zwanenburg; Christian Kraglund Andersen; |
| 513 | Tunable Coupler for High-fidelity Two-qubit Gates in Fluxonium Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Scaling to multi-qubit fluxonium systems requires implementation of fast, high-fidelity, and highly expressive quantum gates, with small residual coupling when the gate is off. In this work we present the design of and experimental progress towards realizing a 2D tunable coupler composed of a tunable fluxonium element and a direct coupling path achieving these requirements. |
Noah Stevenson; Zahra Pedramrazi; Noah Goss; Abhishek Chakraborty; Bibek Bhandari; Lucas Burns; Long Nguyen; Ravi Naik; Andrew Jordan; Justin Dressel; David Santiago; Irfan Siddiqi; |
| 514 | Autonomous Quantum Error Correction of Gottesman-Kitaev-Preskill States, Part 1: Experiments Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present experimental results in superconducting circuits showing the stabilization of GKP states based on a recently proposed reservoir-engineering approach. |
Dany Lachance-Quirion; Jean Olivier Simoneau; Pascal Lemieux; Maxime Tremblay; Sara Turcotte; Marc-Antoine Lemonde; Wyatt Wright; Sara Hosseini; Florian Hopfmüller; Valentin Kasper; Salil Bedkahil; Julien Camirand Lemyre; Philippe St-Jean; |
| 515 | Autonomous Quantum Error Correction of Gottesman-Kitaev-Preskill States, Part 2: Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation (part 2), we present the theoretical background and numerical simulations that guided those experiments, and discuss fundamental insights into the stabilization protocol. |
Marc-Antoine Lemonde; Dany Lachance-Quirion; Maxime Tremblay; Jean Olivier Simoneau; Pascal Lemieux; Florian Hopfmüller; Valentin Kasper; Salil Bedkihal; Sara Turcotte; Sara Hosseini; Wyatt Wright; Julien Camirand Lemyre; Philippe St-Jean; |
| 516 | Towards Fault-tolerant Stabilization of A GKP Qubit Using A Kerr-cat Ancilla (1/2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we discuss our experimental progress toward stabilizing the GKP code using a Kerr-cat ancilla. In the first part of this two-part series of talks, we discuss the design and implementation of our experiment. |
Andy Ding; Benjamin Brock; Alec Eickbusch; Volodymyr Sivak; Jayameenakshi Venkatraman; Rodrigo Cortinas; Vidul Joshi; Stijn de Graaf; Benjamin Chapman; Ioannis Tsioutsios; Shruti Puri; Luigi Frunzio; Robert Schoelkopf; Michel Devoret; |
| 517 | Towards Fault-tolerant Stabilization of A GKP Qubit Using A Kerr-cat Ancilla (2/2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we discuss our experimental progress toward stabilizing the GKP code using a Kerr-cat ancilla. In the second part of this two-part series of talks, we report and discuss our experimental results. |
Benjamin Brock; Andy Ding; Alec Eickbusch; Jayameenakshi Venkatraman; Rodrigo Cortiñas; Vidul Joshi; Stijn de Graaf; Benjamin Chapman; Ioannis Tsioutsios; Shruti Puri; Luigi Frunzio; Robert Schoelkopf; Michel Devoret; |
| 518 | Experimental Realization and Characterization of Stabilized Pair Coherent States I: Motivation and Methods Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a technique of quantum subspace tomography, enabling direct measurements of individual coherence elements of a high-dimensional quantum state without global tomographic reconstruction, thus allowing characterization of the state. |
Sean van Geldern; Jeffrey Gertler; Shruti Shirol; Liang Jiang; Chen Wang; |
| 519 | Experimental Realization and Characterization of Stabilized Pair Coherent State II : State Characterization Results Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work is the first implementation of an engineered non-linear two-photon driven dissipation across two storage cavities that generates and stabilizes PCS. This is part II of the talk and I will be presenting the experimental results along with the simualtion we did to extract the two photon pumping and dissipation rates. |
Shruti Shirol; Sean van Geldern; Jeffrey Gertler; Liang Jiang; Chen Wang; |
| 520 | Assembling A Chain of 3 Cat-qubits for Phase-flip Error Detection (Part 1) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show how to implement a phase-flip error detection scheme with 3 stabilized cat qubits by post-selecting on the negative/trivial error syndromes. |
Louise Devanz; Jeremy Stevens; Emanuele Albertinale; Danielius Banys; Nicolas Bourdaud; Joachim Cohen; Nathanael Cottet; Antoine Essig; Pierre FEVRIER; Adrien Gicquel; Antoine Gras; Jérémie Guillaud; Pierre Guilmin; Sebastion Jezouin; Raphael Lescanne; Paul Magnard; Theau Peronnin; Alexandre May; Ivana Petkovic; Anil Murani; Stephane Polis; Felix Rautschke; Camille Roy; Jean-Loup Ville; |
| 521 | Assembling A Chain of 3 Cat-qubits for Phase-flip Error Detection (Part 2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show how to implement a phase-flip error detection scheme with 3 stabilized cat qubits by post-selecting on the negative/trivial error syndromes. |
Jean-Loup Ville; Emanuele Albertinale; Danielius Banys; Nicolas Bourdaud; Joachim Cohen; Nathanael Cottet; Louise Devanz; Antoine Essig; Pierre FEVRIER; Adrien Gicquel; Antoine Gras; Jérémie Guillaud; Pierre Guilmin; Sebastien Jezouin; Raphael Lescanne; Paul Magnard; Alexandre May; Anil Murani; Theau Peronnin; Ivana Petkovic; Stephane Polis; Felix Rautschke; Camille Roy; Jeremy Stevens; |
| 522 | Quantum Control and Error Correction with Two Bosonic Modes (1/2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use this method to also perform joint-Wigner tomography on the two-mode states. |
Cassady Smith; Akshay Koottandavida; Ioannis Tsioutsios; Aikaterini Kargioti; Luigi Frunzio; Michel Devoret; |
| 523 | Quantum Control and Error Correction with Two Bosonic Modes (2/2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use this method to also perform joint-Wigner tomography on the two-mode states. |
Akshay Koottandavida; Cassady Smith; Ioannis Tsioutsios; Aikaterini Kargioti; Luigi Frunzio; Michel Devoret; |
| 524 | Autonomous Quantum Error Correction and Fault-tolerant Quantum Computation with Squeezed Cat Qubits – Part I Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In part I, we propose an AutoQEC scheme using a two-component squeezed cat (SC) code. |
Guo Zheng; Qian Xu; Yuxin Wang; Peter Zoller; Aashish Clerk; Liang Jiang; |
| 525 | Autonomous Quantum Error Correction and Fault-tolerant Quantum Computation with Squeezed Cat Qubits – Part II Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Bosonic codes encode information into infinite dimensional Hilbert space and provide a hardware-efficient approach to fault tolerant quantum computing. |
Qian Xu; Guo Zheng; Yuxin Wang; Peter Zoller; Aashish Clerk; Liang Jiang; |
| 526 | Graph Gauge Theory of Mobile Non-Abelian Anyons in A Qubit Stabilizer Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We suggest a simple and systematic approach to construct effective unitary protocols for braiding, manipulation and readout of non-Abelian anyons and preparation of their entangled states. |
Yuri Lensky; Kostyantyn Kechedzhi; Igor Aleiner; Eun-Ah Kim; |
| 527 | Observation of Non-Abelian Exchange Statistics on A Superconducting Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work represents a key step towards topological quantum computing. |
Trond Andersen; Yuri Lensky; Kostyantyn Kechedzhi; Ilya Drozdov; Andreas Bengtsson; Sabrina Hong; Alexis Morvan; Xiao Mi; Alexander Opremcak; Eun-Ah Kim; Igor Aleiner; Pedram Roushan; |
| 528 | Tunable Fermionic Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show that the ground states of the Kitaev chain Hamiltonian, for any parameter values in the topological phase, form an approximate error-correcting code that corrects local fermionic parity-preserving errors. |
Abhijeet Alase; David Feder; Barry Sanders; Kevin Stubbs; |
| 529 | Elements of Majorana-based Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will discuss theoretical ideas how to implement Majorana-based quantum computing, focusing on Majorana qubits and their readout as well as a possible realization of a universal set of quantum gates. |
Felix von Oppen; |
| 530 | Quantum Computing with Two-dimensional Conformal Field Theories Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a gapped wavefunction that generalizes the Moore-Read state which is based on the critical Ising model, and show that our generalization leads to universal quantum computing. |
Elias Kokkas; Aaron Bagheri; Zhenghan Wang; George Siopsis; |
| 531 | Induced Superconductivity in Thin Films of Cadmium Arsenide Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report on induced superconductivity in Josephson junctions fabricated on the surface of thin films of cadmium arsenide (Cd 3As 2), which are tuned into different topological and trivial states, respectively, including a two-dimensional (2D) topological insulator (TI). |
Arman Rashidi; Robert Kealhofer; Alexander Lygo; Victor Huang; Susanne Stemmer; |
| 532 | Probing Majorana States in S-TI-S Josephson Junctions By Resonator and Transmon Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To make a more definitive test, we are creating quantum circuits incorporating S-TI-S junctions to probe for parity sensitivity in the inductive energy via microwave resonator and transmon experiments. |
Drew Wild; Guang Yue; Xiong Yao; Deepti Jain; Jisoo Moon; Seongshik Oh; Dale Van Harlingen; |
| 533 | Electronic Structure of The InSb-CdTe-αSn Interface: Using CdTe As A Barrier Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the InSb-CdTe-αSn interface via density functional theory (DFT). |
Malcolm Jardine; Sergey Frolov; Noa Marom; Derek Dardzinski; Maituo Yu; An-Hsi Chen; Aaron Engel; Chris Palmstrom; Yu-Hao Chang; Moira Hocevar; |
| 534 | Superconducting Quantum Effects in Ge-Si Core-shell Nanowires Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: With the latter in mind, we use superconducting Al leads on the Ge-Si nanowire to explore the interaction between the superconducting condensate and quantum states in the wire. |
Joost Ridderbos; Zhen Wu; Ang Li; Erik P. A. M. Bakkers; Chuan Li; Alexander Brinkman; Floris Zwanenburg; |
| 535 | Extrinsic Spin-orbit Coupling in Hybrid Nanowires with Micromagnet Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate the preparation of micromagnet arrays into the anti-aligned micromagnetic configuration using a sequence of externally applied magnetic fields. |
Michael Hynes; Declan Burke; Alexandros Vekris; Jesper Nygard; Kristof Moors; Will Branford; Malcolm Connolly; Mark Buitelaar; |
| 536 | Qubit Resource States for Measurement-based Quantum Teleportation Beyond The Haldane Phase Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work investigates the ability of one-dimensional qubit states to perform universal and deterministic measurement-based quantum gate teleportation (MBQT) in correlation space, within the framework of matrix product states with bond dimension four, without making any assumptions about SPTO. |
David Feder; Zhuohao Liu; Emma Johnson; |
| 537 | Fermion-Parity-Based Computation and Its Majorana-Zero-Mode Implementation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce fermion-parity-based computation (FPBC): a measurement-based scheme, modeled on Pauli-based computation, that uses efficient classical processing to "virtually" increase the number of available MZMs. |
Campbell McLauchlan; Benjamin Béri; |
| 538 | Non-Abelian Holonomy in A Chaotic Majorana Billiard Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We characterize the corresponding non-Abelian holonomy using random matrix theory and discuss measurable signatures of the non-Abelian time-evolution. |
Max Geier; Svend Krøjer; Felix von Oppen; Karsten Flensberg; Piet Brouwer; |
| 539 | Experimental Quantum Transport of Rydberg Excitations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently, a simple approach only using a single type of Rydberg state was introduced by [3]. |
Kangheun Kim; Fan Yang; Jaewook Ahn; |
| 540 | Quantum Operations in Realistic Neutral Atom Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Regarding digital gates, we present a robust protocol based on adiabatic rapid passage [1] for realizing high-fidelity multiqubit controlled phase gates. |
Gerard Pelegrí; Tomas Kozlej; Jonathan Pritchard; Andrew Daley; |
| 541 | High-Fidelity, Low-Loss State Detection of Alkali Atoms in Optical Tweezers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In work towards Rydberg-dressing quantum computation, we demonstrate hyperfine state readout of individual cesium atoms in optical tweezers with 0.09(2)% infidelity and low loss. |
Matthew Chow; Bethany Little; Yuan-Yu Jau; |
| 542 | Individual Addressability for Short-wavelength Transitions Through Visible Integrated Photonics with Free-space Nonlinear Conversion Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose and implement a strategy to convert light from arrays of thin-film-lithium-niobate integrated photonic modulators to blue and ultraviolet wavelengths via sum-frequency generation with a strong pump beam. |
Thomas Propson; Thomas Propson; Ian Christen; Hamed Sattari; Gregory Choong; Adrian Menssen; Amir Ghadimi; Franco N C Wong; Dirk Englund; |
| 543 | Optical Tweezers Throw and Catch Single Atoms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an experiment of single-atom throw-and-catch by optical tweezers. |
Hwang Sub; Andrew Byun; Jaewook Ahn; |
| 544 | Symmetry Protected State of Rydberg Atoms As Resources for Universal Measurement-based Quantum Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will show that the quantum dimer state on the Kagome lattice, recently realized with high fidelity in a Rydberg quantum simulator [Semeghini extit{et al.}, Science 374, 6572 (2021)], offers a sufficient resource for universal measurement-based quantum computations. |
Valentin Crépel; |
| 545 | Telecom-Compatible Neutral Atom Quantum Network Node Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This paves a path towards integrating a high quality, efficient telecom photonic interface with local quantum processors based on atom arrays. We will present our protocol for generating high fidelity atom-telecom photon entanglement and show experimental progress towards realizing this network node, highlighting our chip-based architecture hosting an array of nanophotonic cavities, efficient free-space coupling to our cavities, and the integration of our atom array with our cavity chip. |
Noah Glachman; Shankar G Menon; Matteo Pompili; Yuzhou Chai; Dahlia Ghoshal; Kevin Singh; Alan Dibos; Johannes Borregaard; Hannes Bernien; |
| 546 | Local Measurement of Rydberg Atom Graphs Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we use a single measurement qubit to probe the entire quantum dynamics of a massive Rydberg atom graph. |
Andrew Byun; Hansub Hwang; Jaewook Ahn; |
| 547 | Atom Arrays in An Optical Cavity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Measuring either atomic fluorescence or the transmission of light through the cavity, we achieve state measurement infidelities of 0.5% and find negligible decoherence on other atoms tens of microns away from the cavity center. |
Zhenjie Yan; Yue-Hui Lu; Emma Deist; Jacquelyn Ho; Mary Kate Pasha; Johannes Zeiher; Dan Stamper-Kurn; |
| 548 | Fast Scrambling Transition in Sparse Clifford Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we study novel transitions between slow and fast scrambling regimes in Clifford circuits with tunable non-local sparse coupling. |
Sridevi Kuriyattil; Andrew Daley; Gregory Bentsen; Tomohiro Hashizume; |
| 549 | Quantum Dynamics of Inter-graph Rydberg Atom Interactions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This, as we consider here, opens a new possibility to study the interactions among Rydberg atom clusters, i.e., the inter-graph Rydberg atom interactions [3]. |
MinHyuk Kim; Jaewook Ahn; |
| 550 | Quantum Computing of 3-SAT Problems Using Rydberg Atom Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a proof-of-principle experimental demonstration of quantum mechanical computing for a set of instances of the 3-SAT (Satisfiability) problem. |
Seokho Jeong; MinHyuk Kim; Minki Hhan; Jaewook Ahn; |
| 551 | Quantum Circuit Optimization and Transpilation Via Parameterized Circuit Instantiation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we describe algorithms to apply instantiation during two common compilation steps: circuit optimization and gate-set transpilation. |
Ed Younis; Costin Iancu; |
| 552 | Efficient Quantum Circuit Design with A Standard Cell Approach Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a new method for designing quantum circuits which utilizes standard cells similar to those found in classical circuit design. |
Evan Dobbs; Alexandru Paler; Joseph Friedman; |
| 553 | Using Quantum Hardware Speed Limits to Improve Basis Gate Selection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will present our recent simulated fidelity improvements using our software tool. |
Evan McKinney; Chao Zhou; Mingkang Xia; Michael Hatridge; Alex Jones; |
| 554 | SimuQ: A Domain-Specific Language For Quantum Simulation With Analog Compilation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present SimuQ, the first domain-specific language for Hamiltonian simulation that supports pulse-level compilation to heterogeneous analog quantum simulators. |
Yuxiang Peng; Jacob Young; Pengyu Liu; Xiaodi Wu; |
| 555 | A Case for Efficient and Scalable Tree-Based Quantum Circuit Simulator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Unfortunately, for large quantum circuits, noisy simulators iteratively execute the same circuit across multiple trials (shots) – thereby incurring large performance overheads. To address this, we propose a noisy simulation technique called Tree-Based Quantum Circuit Simulation (TQSim). |
Meng Wang; Huang Rui; Swamit Tannu; Prashant Nair; |
| 556 | Ansatz Learning for Quantum Circuit Optimization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This project explores the use of machine learning in identifying good quantum circuit ans ¨atze for the purposes of quantum circuit optimization. |
Mathias Weiden; John Kubiatowicz; Ed Younis; Costin Iancu; |
| 557 | Using Machine Learning for Autonomous Selection of Optimal Qubit Layouts on Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a set of heuristics for performing layout selection on quantum devices. |
Aaron Barbosa; Yuval Baum; Pranav Mundada; Gavin Hartnett; Varun Menon; |
| 558 | Interaction Graph-based Profiling of Quantum Circuits for Algorithm-aware Mapping Techniques Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In-depth profiling of quantum circuits could be significant to: i) have a deeper understanding of why some circuits have higher fidelity than others when being run on a particular processor using a specific mapping technique and ii) develop application-driven mapping methods. |
Medina Bandic; Carmina Almudever; Sebastian Feld; |
| 559 | Qubit-reuse Compilation with Mid-circuit Measurement and Reset Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present two algorithms for performing qubit-reuse compilation: an exact constraint programming optimization model and a greedy heuristic. |
Matthew DeCross; |
| 560 | Compilation of Quantum Applications to Hardware Primitives Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present results from compilation software that tailors the execution of quantum applications to underlying hardware primitives. |
Pranav Gokhale; Fred Chong; Andrew Litteken; David Owusu-Antwi; Michael Perlin; Kaitlin Smith; Palash Goiporia; Rich Rines; Salahedeen Issa; Victory Omole; |
| 561 | Integrated Diamond Nanostructures for Quantum Magnetometry Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The goal of this project is to improve the sensitivity of diamond magnetometers by fabricating microstructures out of the diamond hosting the NV centers. |
Alexandre Guilbault; Dominic Lepage; Vincent Halde; Sylvain Nicolay; David Roy-Guay; Dominique Drouin; Michel Pioro-Ladrière; |
| 562 | Imaging A Network of 50 Coupled Spins with A Single Spin Quantum Sensor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate the complete mapping of a network of 50 coupled spins through novel correlated sensing schemes using a single nitrogen-vacancy center in diamond. |
Guido van de Stolpe; Damian Kwiatkowski; Conor Bradley; Tim Hugo Taminiau; |
| 563 | Nano-MRI Using Single Spins in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our work, we use nano-scale nuclear magnetic resonance (nano-NMR) techniques with shallow NV centers to detect the signal produced by statistically polarized protons. |
Raul Gonzalez Cornejo; Alon Salhov; Berndt Koslowski; Alex Retzker; Fedor Jelezko; |
| 564 | Diffusion Restricted Nano Nmr Using Nitrogen Vacancy Centers in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate experimentally several approaches for confining the liquids in nano pots created at the diamond surface for the purpose of improved resolution. |
Anjusha Vijayakumar Sreeja; Raul Gonzalez Cornejo; Nicolas Staudemaier; Stefan Dietel; Philipp Vetter; santiago Oviedo-Casado; Genko Genov; Alex Retzker; Fedor Jelezko; |
| 565 | Sensing and Control of Interacting Electron-spin Pairs in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate a strong coherent back action of a central NV center electron spin on the dynamics of a pair of coupled electron spins in a bath of P1 centers in diamond. |
Hans Bartling; Nicolas Demetriou; Nicholas Zutt; Maarten Degen; Damian Kwiatkowski; Sjoerd Loenen; Conor Bradley; Tim Hugo Taminiau; |
| 566 | Tunable Gyromagnetic Augmentation of Nuclear Spins in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present our work demonstrating rapid control of nuclear spins, which are well isolated from external fields, through magnetic-field induced augmentation. |
Russell Goldblatt; Andrew Martin; Alexander Wood; |
| 567 | Electron Spin Resonance and Sub-molecular Resolution Magnetic Resonance Imaging of Single Organic Radicals with The Scanning Tunneling Microscope Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we describe our efforts to measure the spin resonance of single organic radicals adsorbed on ultra-thin MgO grown on a metal support. |
Gregory Czap; Christopher Lutz; Mark Sherwood; |
| 568 | Relaxation Mechanisms of Single Dark Spins in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a combined computational and experimental approach to engineer NV-bath interactions and measure the relaxation of individual P1 bath spins. |
Jonathan Marcks; Mykyta Onizhuk; Yuxin Wang; Nazar Delegan; Masaya Fukami; Maya Watts; F. Joseph Heremans; Aashish Clerk; Giulia Galli; David Awschalom; |
| 569 | Exploring New Physics with Molecular Ions Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The electron’s electric dipole moment (eEDM)/Nuclear Magnetic Quadruple Moment (NMQM) are quantities that allows for an explanation for events such as the matter antimatter … |
Trevor Taylor; Yan Zhou; Rodrigo Fernandez; Bernardo Gutierrez; Casey Johnson; |
| 570 | Thermodynamics of Precision for Ac-driven Strongly-correlated Quantum Devices in Linear-response Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study thermoelectric transport in quantum nanoelectronics devices comprising arbitrary interacting fermionic degrees of freedom coupled to macroscopic source and drain leads. |
Andrew Mitchell; George Mihailescu; Steve Campbell; Gabriel Landi; |
| 571 | Toward Terahertz Single-Photon Detection with Antenna-Coupled Graphene Josephson Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present measurements of two generations of antenna-coupled GJJ devices designed for operation at 0.8 THz using a filtered, calibrated blackbody lightsource. |
Jordan Russell; Seunghan Lee; Bae-Ian Wu; Leonardo Ranzani; Erik Henriksen; Gil-Ho Lee; Kin Chung Fong; |
| 572 | Evidence of Dual Shapiro Steps in A Josephson Junctions Array Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work sheds new light on phase-charge duality, omnipresent in condensed matter physics, and extends it to Josephson circuits. |
Nicolò Crescini; Samuel Cailleaux; Wiebke Guichard; Cécile Naud; Olivier Buisson; Kater Murch; Nicolas Roch; Denis Basko; |
| 573 | Evidence of Dual Shapiro Steps in A Josephson Junctions Array Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work sheds new light on phase-charge duality, omnipresent in condensed matter physics, and extends it to Josephson circuits. |
Samuel Cailleaux; |
| 574 | Purification-based Quantum Error Mitigation of Pair-correlated Electron Simulations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We compare the performance of error mitigation based on doubling quantum resources in time (echo verification) or in space (virtual distillation), on up to 20 qubits of a superconducting qubit quantum processor. |
Thomas O’Brien; Gian-Luca Anselmetti; Fotios Gkritsis; Vincent Elfving; Stefano Polla; William Huggins; Oumarou Oumarou; Kostyantyn Kechedzhi; Christian Gogolin; Ryan Babbush; Nicholas Rubin; |
| 575 | Improving Algorithmic Performance of Tunable Superconducting Qubits Using Deterministic Error Mitigation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show how our deterministic error mitigation pipeline improves the performance of superconducting hardware on algorithmic benchmarks. |
Varun Menon; Pranav Mundada; Aaron Barbosa; Yuval Baum; |
| 576 | Probabilistic Error Cancellation for Measurement-based Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we extend the PEC framework to move beyond ideal unitary gates and implement noise learning and mitigation for circuits consisting of mid-circuit measurements, and classically controlled unitary operations (‘feedforward’). Our work introduces a novel approach to learning and error mitigation for circuits with non-unitary, mid-circuit operations as well as characterizing the impact of these operations on active, unmeasured qubits. |
Riddhi Swaroop Gupta; Ewout van den Berg; Kristan Temme; Abhinav Kandala; |
| 577 | Hardware Acceleration for Randomized Gate Execution Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Extending such a loop to include randomized gate executions may provide performance improvements to the aforementioned techniques, making them practical for real-world applications. In this talk, control systems suitable for running these methods will be discussed. |
Andrew Patterson; Andrew Arrasmith; Marco Paini; |
| 578 | Experimentally Characterizing Error Mitigation on Large Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Methods such as zero-noise extrapolation that suppress rather than null the bias may in principle enlarge the maximum viable circuit, but implementations often rely on strong assumptions about underlying device behavior, and how to optimize performance at scales beyond exact classical simulability remains a subject of research. |
Andrew Eddins; Youngseok Kim; Ewout van den Berg; Xuan Wei; Sergey Bravyi; Kristan Temme; Abhinav Kandala; |
| 579 | Hardware Acceleration of Near-Term Quantum Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we will discuss how using advanced control system techniques at runtime may speed up and improve the performance of near-term quantum computation. |
Andrew Arrasmith; Andrew Patterson; Alice Boughton; Marco Paini; |
| 580 | Recent Progress and Challenges in Error Mitigation with Fixed-frequency Superconducting Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Superconducting quantum processors have recently made tremendous improvements in both quality and scale. Concurrent progress in error mitigation techniques has now enabled the … |
Youngseok Kim; Andrew Eddins; Ewout Berg; Ken Wei; Sergey Bravyy; Kristan Temme; Abhinav Kandala; |
| 581 | Eliminating Overhead: Improving The Performance of Hybrid Algorithms Using Deterministic Error Suppression Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we show that a deterministic error suppression workflow improves the performance of hybrid algorithms on currently available quantum hardware. |
Smarak Maity; Pranav Mundada; Aaron Barbosa; Tom Merkh; Andre Carvalho; Michael Hush; Michael Biercuk; Yuval Baum; |
| 582 | Error Suppression and Error Mitigation Using Qiskit Runtime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Although this approach does not return a perfectly corrected solution, it can retrieve results that improve upon a direct computation by performing noisy calculations, extracting valuable information from them, and processing that information classically. In this talk I will explore my recent work on how these techniques can be studied using Qiskit, and how someone without detailed knowledge of them can leverage the Qiskit Runtime framework, through the new and revolutionary Primitives construct, for seamlessly improving present calculations. |
Pedro Rivero; |
| 583 | Probing The Effect of Superconducting Gap Profile on Quasiparticle Dynamics in Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Suppressing the flux of high-energy photons reduces the rate of single-charge tunneling in these devices; however, there remains a nonequilibrium quasiparticle population due to undetermined Cooper-pair breaking mechanisms. We have found that these nonequilibrium quasiparticles are well-thermalized and become trapped in regions of the device with a lower superconducting gap. |
Spencer Diamond; Heekun Nho; Thomas Connolly; Pavel Kurilovich; Valla Fatemi; Michel Devoret; |
| 584 | Assessing Phonon Trap Efficiency Through On-chip Spatial and Energy Resolved Detection of High Energy Impacts Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will present on-chip high energy events detection with both spatial and energy resolution in order to assess the efficiency of phonon traps. |
Anil Murani; Francesco Valenti; Patrick Paluch; Nicolas Gosling; Thomas Reisinger; Robert Kruk; Robert Gartmann; Richard Gebauer; Oliver Sander; Ioan-Mihai Pop; |
| 585 | Suppression of Correlated Qubit Errors By Silicon Micromachining Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This poses a problem for error correction codes, which generally assume uncorrelated errors. In this work, we investigate suppression of these errors by using a deep reactive ion etch process to modify the propagation of pair-breaking phonons in the qubit substrate. |
Matthew Snyder; Matthew Snyder; David Harrison; Chuan-Hong Liu; Sohair Abdullah; Shravan Patel; Chris Wilen; Vito Iaia; Britton Plourde; Robert McDermott; |
| 586 | Decoherence Suppression in Transmon Qubits By Encapsulation in Hexagonal Boron Nitride Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we describe an approach to reduce decoherence that involves encapsulation of transmon qubits in few-layer hexagonal boron nitride (hBN). |
Sohair Abdullah; David Harrison; Robert McDermott; Abigail Shearrow; Chuan-Hong Liu; |
| 587 | Quantum Links for Large-scale Spin Qubit ArchitecturesAndre Saraiva Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will cover three technologies that we recently explored in the context of CMOS electrostatic quantum dots. |
Andre Saraiva; |
| 588 | Towards High-Dimensional Quantum States in Trilayer WSe2 Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we use trilayer WSe 2, which has 6 inequivalent valleys inside the 1st Brillouin zone [1], to make quantum dot devices. |
Pengcheng Luan; Nicholas Mazzucca; Kenji Watanabe; Takashi Taniguchi; Fan Zhang; Marc Bockrath; |
| 589 | Towards Quantum-confined Spin-qubits in Monolayer, Semiconducting WSe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present our on-going efforts to introduce a quantum emitter with a spin ground state in fully encapsulated, monolayer WSe2. |
Eleanor Nichols; Carola Purser; Michael Pitts; Andrea Ferrari; Mete Atatüre; Dhiren Kara; |
| 590 | Probing The Optical Coherence of Quantum Emitters in A WSe2 Monolayer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we probe the quality of single-photon emitters in WSe 2 monolayers as a function of dielectric environment and excitation energy and determine the effects on spectral wander, purity, and brightness. |
Carola Purser; Eleanor Nichols; Michael Pitts; Evgeny Alexeev; Andrea Ferrari; Dhiren Kara; Mete Atatüre; |
| 591 | Coherent Dynamics of Strongly Interacting Electronic Spin Defects in Hexagonal Boron Nitride Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the coherent dynamics of strongly interacting ensembles of negatively charged boron-vacancy (V B -) centers in hexagonal boron nitride (hBN) with varying defect density. |
Ruotian Gong; Guanghui He; Xingyu Gao; Peng Ju; Zhongyuan Liu; Bingtian Ye; Erik Henriksen; Tongcang Li; Chong Zu; |
| 592 | Thickness-dependent Properties of Color Centers in Hexagonal Boron Nitride: A First Principles Study Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we used density functional theory to explore whether the presence of multiple layers is a source of strain due to “interlayer-friction”. |
Sai Krishna Narayanan; Pratibha Dev; |
| 593 | Integrated System of An Optical Cryostat and Single-photon Detectors for Applications in Near Infrared Spectroscopy of Quantum Emitters Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present measurements on quantum emitters that were taken in an optical cryostat with the capability to reach 1.7 K reliably. |
Victoria Norman; Sridhar Majety; Pranta Saha; Pietra Curro; Marina Radulaski; |
| 594 | Coherent Spin Dynamics of Hyperfine-coupled Vanadium Impurities in Silicon Carbide Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we show coherent spin dynamics of an ensemble of vanadium defects, of which a part is strongly coupled to neighboring nuclear spins and a part is isolated from it, around a clock transition. |
Joop Hendriks; Carmem Gilardoni; Chris Adambukulam; Arne Laucht; Caspar Van der Wal; |
| 595 | Neutral Shallow Donors in ZnO: Contributions to The Optical Linewidth of The Donor – Bound Excitonic Transition Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this contribution, we present an experimental and theoretical study on the D 0 /D 0X optical linewidth properties of donor ensembles. |
Vasileios Niaouris; Samuel D’Ambrosia; Christian Zimmermann; Michael Titze; Edward Bielejec; Ethan Hansen; Xingyi Wang; Simon Watkins; Kai-Mei Fu; |
| 596 | Coherent Control of Er in Si Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the electron spin properties of Er ensembles in Si accessed via resonant photoluminescence excitation. |
Ian Berkman; Alexey Lyasota; Gabriele de Boo; John Bartholomew; Brett Johnson; Jeffrey McCallum; Bin-Bin Xu; Shouyi Xie; Rose Ahlefeldt; Matthew Sellars; Chunming Yin; Sven Rogge; |
| 597 | Heralded Entanglement of Single Rare-Earth Ion Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we demonstrate entanglement of two spectrally distinguishable 171Yb qubits in a single cavity. |
Andrei Ruskuc; Chun-Ju Wu; Joonhee Choi; Sophie Hermans; Andrei Faraon; |
| 598 | Decoherence-free Subspace of Nuclear Spins Coupled to A Rare-earth Ion Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Crucially, we identify the decoherence-free subspace of the collective nuclear spin state, which is insensitive to the correlated magnetic field noise generated by the Yb dipolar field. |
Chun-Ju Wu; Andrei Ruskuc; Joonhee Choi; Andrei Faraon; |
| 599 | Dynamics of Transmon Ionization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, focusing on the ubiquitously used transmon qubits, we address the phenomenon of escape into unconfined states [1,2], and unveil a mechanism for rate enhancement during measurement: by interactions between the low-lying states defining the qubit subspace and high-energy chaotic states [3]. |
Alexandru Petrescu; |
| 600 | Interplay of Local and Induced Decoherence in Circuit-QED: Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present our theoretical framework for constructing quantum master equations that self-consistently incorporate all dissipation channels. |
Archana Kamal; Zhihao Xiao; Ted Thorbeck; Juzar Thingna; Andrew Keefe; Luke Govia; |
| 601 | Interplay of Local and Induced Decoherence in Circuit-QED: Experiment Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: It has long been known in the field that the lifetime of a superconducting qubit (T1) can change dramatically during dispersive measurement and that it typically changes for the … |
Ted Thorbeck; Zhihao Xiao; Juzar Thingna; Archana Kamal; Luke C. G. Govia; |
| 602 | Optimizing Signal to Noise Ratio for Superconducting Qubit Readout with A Purcell Filter Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we explore calibration of the parameter space for the combined readout resonator-Purcell filter system to maximize the Signal-to-Noise ratio for readout given a finite readout time. |
Ross Shillito; François Swiadek; Sebastian Krinner; Andreas Wallraff; Alexandre Blais; |
| 603 | Protecting Transmon Qubits from Purcell Decay and Other External Sources of Decoherence Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will present both our efforts to regularly achieve high-coherence transmons in 2D and 3D geometries and our implementation of a technique to incorporate protection from the Purcell effect directly into the sample design and geometry [Sunada, et al. |
Param Patel; Mingkang Xia; Chao Zhou; Ryan Kaufman; Israa Yusuf; Michael Hatridge; |
| 604 | Modeling Superconducting Microwave Systems with DEC-QED: Performance and Applications Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This approach naturally captures the nonlinear response of induced supercurrents to applied fields, enabling accurate modeling of the dynamics in superconducting microwave systems. |
Dzung Pham; Richard Li; Wentao Fan; Nicholas Bronn; Thomas McConkey; Hakan Tureci; |
| 605 | Acoustically Shielded TLS Exceeding 100us T1 Time Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce the design, fabrication and test of a hybrid system incorporating SC circuits and acoustic metamaterials. |
Mo Chen; Oskar Painter; |
| 606 | Simulating Noise on A Quantum Processor: Interactions Between A Qubit and Resonant Two-level System Bath Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The two primary models for TLS behavior are the standard model, which describes the interactions of distributions of TLSs with continuous wave devices, and single TLS models. |
Yaniv Rosen; Yujin Cho; Daniel Tennant; Vincenzo Lordi; Jonathan DuBois; Dipti Jasrasaria; Keith Ray; |
| 607 | Diagnosis and Mitigation of Correlated Errors in Superconducting Qubits from Ionizing Radiation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the detection of multi-qubit correlated relaxation events in coincidence with cosmic ray secondary particles using scintillating detectors. |
Patrick Harrington; Mingyu Li; Wouter Van De Pontseele; Daniel Mayer; David Kim; Bethany Niedzielski; Alexander Melville; Mollie Schwartz; Jonilyn Yoder; Jeffrey Grover; Kyle Serniak; Joseph Formaggio; William Oliver; |
| 608 | Directional Readout Resonator with Interference Purcell Filter for Scalable and Modular Qubit Readout Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present a design for "directional readout", which avoids using a weakly-coupled port while preserving near-unity directionality. |
Alec Yen; Yufeng Ye; Kaidong Peng; Gregory Cunningham; Jennifer Wang; Kevin O’Brien; |
| 609 | Development of Ring Resonators for Non-Reciprocal Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose another regime of potentially low insertion-loss, high directional-contrast nonmagnetic microwave isolator based on ring resonators and the use of temporal modulation to break the chiral symmetry of wave propagation. |
Zhiyin Tu; Alicia Kollar; |
| 610 | Impact of Charge Dispersion on Lifetime of Transmon with Different Electrode Gaps Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Non-equilibrium quasiparticles tunneling across the Al/AlO x/Al Josephson junction is a source of energy relaxation for transmon qubits. To suppress the quasiparticle tunneling, … |
Kungang Li; Sudeep Dutta; Zachary Steffen; Benjamin Palmer; Christopher Lobb; Frederick Wellstood; |
| 611 | Trapping Quasiparticles on Superconducting Qubits Through Double Gap Engineering Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Based on the diffusion theory 1, we propose a double gap engineering model to analytically and numerically simulate the quasiparticle diffusion in the superconducting transmon qubit under realistic assumptions, and we quantitatively calculate the improvement of trapping efficiency with this technique. |
Ugur Alyanak; Ziwen Huang; Wei-Ting Lin; Xinyuan You; Alexander Romanenko; Anna Grassellino; Shaojiang Zhu; |
| 612 | Efficient High-Fidelity Flying Qubit Shaping Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We find the upper limit for the photonic emission efficiency for imperfect emitters and show a path forward to optimize the fidelity. |
Benedikt Tissot; Guido Burkard; |
| 613 | Experimental Preparation of Generalized and Multipartite Cat States for Flying Microwave Photons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work presents a powerful toolbox for researching quantum metrology and many quantum information processing protocols based on cat states. |
Zenghui Bao; |
| 614 | Continuous Variable Quantum Boltzmann Machines Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we propose a CV QBM that utilizes previously developed CV quantum imaginary time evolution algorithm. |
Kubra Yeter Aydeniz; George Siopsis; |
| 615 | Quantum Key Distribution in A Packet-switched Network Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we investigate the feasibility of performing quantum key distribution (QKD) in a packet-switched network, using near-term technologies. |
Reem Mandil; Stephen DiAdamo; Bing Qi; Alireza Shabani; |
| 616 | Packet Switching in Quantum Networks: A Path to The Quantum Internet Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we introduce packet switching as a new paradigm for quantum data transmission in both future and near-term quantum networks. |
Stephen DiAdamo; Bing Qi; Alireza Shabani; Glen Miller; Ramana Kompella; |
| 617 | Multi-objective Shortest Paths for Quantum Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In order to use efficient MOSP algorithms, the network algebra must be both monotonic and isotonic, something that is not trivially true for general quantum networks. In this paper, we utilize the pairwise entangled network (PEN) state framework to present fusion rules for combining entangled resources along network edges and show that these fusion rules satisfy the necessary conditions of monotonicity and isotonicity. |
Dov Fields; Siddhartha Santra; Vladimir Malinovsky; |
| 618 | Quantum Communication Between Superconducting Qubits Using Flying Microwave Photons Over Low-loss Interconnects Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present our recent experimental progress in quantum communication between superconducting qubits using flying microwave photons over low-loss interconnects. |
Jiawei Qiu; |
| 619 | FPGA-based Signal Generation and Readout of SNSPD Signals for Quantum Communication Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate that using the digital-to-analog converters of the FPGA is comparable to commercial arbitrary waveform generators (AWG) by characterizing the coincidence-to-accidental ratio (CAR) and the entanglement visibility of the entangled photon-pair source in the x-basis. |
Christina Wang; |
| 620 | Asymmetric Cloning to Eavesdrop on BB84 Protocol Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By leveraging the inherent loss expected in the system, an eavesdropper may obtain actionable information [on the raw key] with sufficiently low disturbance to the signal to remain nearly undetectable. In this talk we will demonstrate how this is possible and the tradeoff between information gain and detectability. |
Elizabeth Campolongo; Brian Pigott; Hardik Routray; |
| 621 | Double-Transmon Coupler I: Elimination of Residual ZZ Coupling for Highly Detuned Transmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The DTC also allows us to perform fast, high-fidelity two-qubit gates [1], as explained in the next talk. |
Hayato Goto; Kentaro Kubo; |
| 622 | Double-Transmon Coupler II: High-Fidelity CPHASE and Parametric Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: As explained in the previous talk (Double-Transmon Coupler I), we proposed a new coupler, the double-transmon coupler (DTC), that can eliminate the ZZ coupling of the highly detuned qubits. |
Kentaro Kubo; Hayato Goto; |
| 623 | Three-qubit Interaction in Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we propose extended circuit QED modeling and the major differences it can make. |
Xuexin Xu; Mohammad Ansari; |
| 624 | A Universal Set of Quantum Gates on Dynamically Protected Fluxonium Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For example, the fluxon states of the ultra-heavy IST qubit have relaxation times on the order of hours [1], but coherent control is not feasible with a conventional approach. We propose to solve this problem by introducing a dynamically tunable fluxonium architecture that is able to switch between these two regimes in-situ. |
Alesya Sokolova; Lucky Kapoor; Farid Hassani Bijarbooneh; Johannes Fink; |
| 625 | Fast and High-fidelity Qubit Initialization Based on Auxiliary Energy Levels in Fluxonium Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Specifically, we utilize the second-excited energy level of the fluxonium as an auxiliary level to perform the initialization protocol with single-frequency microwave driving. |
Tenghui Wang; Feng Wu; Fei Wang; Lu Ma; Xizheng Ma; Gengyan Zhang; Hui-Hai Zhao; Chunqing Deng; |
| 626 | Non-perturbative Analysis of Parametric Two-qubit and Three-qubit Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We make a comprehensive analysis to directly solve the time-dependency and introduce a continuous set of Fermionic Simulation gates by tuning qubit-qubit detuning and pulse phase. We propose a generalized fast and high fidelity three-qubit-gate that only requires one control pulse, thus eliminating time-misalignment error, which is one of the disadvantages of existing proposals for such gates. |
Zhongyi Jiang; Mohammad Ansari; |
| 627 | Nonlinear Response of A Transmon Using The Schwinger Oscillator Model of Angular Momentum Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: As an alternative to the Jaynes-Cummings model of a qubit, we consider the Schwinger oscillator model of angular momentum [1] to define the pseudo spin of a transmon. |
Robert Erickson; |
| 628 | Detuned Two-qubit Gate in Stabilized Cat Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The detuning however shifts the eigenstates of the target qubit, impacting the overall fidelity of the gate. Here we study the implications of this term on the overall CNOT gate and explore possible improvements in gate fidelity. |
Rahul Bhowmick; Mohammad Ansari; |
| 629 | Schrödinger Cat in A Kerr-free SNAIL-terminated Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate a method to generate Schrödinger cat states in a coplanar SNAIL-terminated resonator biased at Kerr-free point. |
Zhirong LIN; Xiaoliang He; Yong Lu; Daqiang Bao; Hang Xue; Wenbing Jiang; Zhen Wang; |
| 630 | An Ultra-high Gain Single-photon Transistor in The Microwave Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Circuit quantum electrodynamics provides great flexibility to generate such an interaction, and thus could serve as an effective platform to realize a high performance single-photon transistor. In this presentation, we will present our approach to the realization of such a photonic transistor in the microwave regime with circuit QED architectures, which consists of two microwave cavities dispersively coupled to a superconducting qubit. |
Yan Li; |
| 631 | Hello Quantum World! A Rigorous But Accessible First-year University Course in Quantum Information Science Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will describe a course we developed at Virginia Tech called ‘Hello Quantum World!’ |
Sophia Economou; |
| 632 | Teaching Introductory Quantum Engineering to Science and Engineering Students with Diverse Educational Backgrounds Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We employ an approach to teaching an Introduction to Quantum Engineering which favors an audience less trained in the traditional physics formalisms for quantum; an attempt to make the important quantum phenomena more digestible. |
Ryan Perrin; Kasra Sardashti; |
| 633 | Exposing Students to Various STEM Concepts Using Open-source Tools for Quantum Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present open-source tools for demonstrating quantum computation, giving students hands-on tools to iterate rapidly. |
Abraham Asfaw; |
| 634 | Portable Nitrogen-Vacancy Center-Based Quantum Demonstrator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work is a step towards building a portable quantum demonstrator so that end users can run their own quantum experiments. To achieve this, we leverage the Quantum Engineering Toolkit from Keysight to control a Nitrogen-Vacancy (NV) center-based quantum magnetometer from SBQuantum. |
Ankita Chakravarty; Romain Ruhlmann; Vincent Halde; Jason Kolbush; Arnaud Carignan-Dugas; Azin Aghdaei; Marc-Antoine Roux; Clayton Crocker; Olivier Bernard; David Roy-Guay; André Beaulieu; Philip Krantz; Marc-André Tétrault; Michel Pioro-Ladrière; |
| 635 | Quantum LifeLong Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present our Munich project Quantum LifeLong Learning (QL3), a targeted education and training program of the Munich universities in the field of quantum technologies according to a university certificate and ECTS system with the target group of specialists and executives in the industry. |
Lukas Sigl; Tatjana Wilk; Jochen Kuhn; Jan von Delft; Alexander Holleitner; |
| 636 | Development of An Undergraduate Quantum Engineering Degree Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present the design and implementation of an undergraduate Quantum Engineering degree at UNSW Sydney [1]. |
Andrea Morello; Andrew Dzurak; Julien Epps; Arne Laucht; Robert Malaney; Hendra Nurdin; Jarryd Pla; Andre Saraiva; Chih-Hwan Yang; |
| 637 | Creating Standards-Aligned K–12 Quantum Curriculum Materials and Teacher Supports Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: K–12 education poses challenging circumstances for engaging and preparing diverse students in quantum information science (QIS). QIS learning must compete with established topics … |
Mary Fries; |
| 638 | Designing A Quantum Field Theory Course for Engineers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our one quarter course does this by highlighting the phenomena of superconductivity, integer quantum hall effect, and Majorana states. We describe these by focusing on specific fundamentals, such as the Lagrangian, gauge field, coherent states, and symmetry breaking. |
Tyler Howard; Friedrich Prinz; |
| 639 | Promoting First Year Physics Student Belonging Through DEI Education Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Black and Latinx students who begin college as STEM majors are more likely than white students to withdraw from college or switch to another major. To increase the representation of these minority groups we must change the culture of undergraduate physics and build a safe community where all students can thrive. |
Kendra Letchworth-Weaver; |
| 640 | A Supplementary, Language-focused, First-year Physics Textbook for Multilingual Students: Key Instructional Approaches Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we report on the development of a Systemic Functional Linguistic (SFL)-informed instructional project in content-integrated language learning (CLIL) that culminates in a unit-by-unit supplementary English language textbook that accompanies a first-year physics textbook, both open educational resources. |
Wucheng Zhang; Alfredo Ferreira; |
| 641 | Qubit By Qubit: Insights and Best Practices from Teaching Quantum to 10,000 High School Students Globally Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This talk will focus on the pipeline of K-12 programming we’ve designed and key takeaways and best practices we’ve learned from teaching quantum to thousands of high school students in the hopes of helping fellow educators increase the impact of their quantum education efforts. |
Kiera Peltz; |
| 642 | Qubit By Qubit: Insights and Best Practices for Designing and Scaling A Virtual Global Quantum Course Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will discuss best practices for designing and scaling a global, virtual, and accessible quantum course. |
Kiera Peltz; |
| 643 | Subspace Diagonalization on Quantum Computers Using Eigenvector Continuation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present Eigenvector Continuation (EC) as a QSD method, where low-energy states of the Hamiltonian at different points in parameter space are chosen as the subspace basis. |
Akhil Francis; Anjali Agrawal; Jack Howard; Efekan Kokcu; Alexander Kemper; |
| 644 | Iteration-free Variational Quantum Eigensolver Algorithm Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a variant of the variational quantum eigensolver algorithm that only requires the execution of a set of quantum circuits once rather than at every iteration during the parameter optimization process, thereby significantly reducing the number of needed circuit executions. |
Daniel Gunlycke; C Stephen Hellberg; John Stenger; |
| 645 | Relaxational Quantum Eigensolver: State Characterization and Thermometry Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Balancing the infinite temperature bath of random gate error, RQE returns states with an average energy equal to a constant fraction of the ground state. In this work we focus on better understanding the steady state, its "temperature" T as a function of error rate, and methods for estimating both T and deviations from thermal behavior. |
Alexandar Liguori-Schremp; George Grattan; David Rodriguez Perez; Wesley Jones; Peter Graf; Eliot Kapit; |
| 646 | Peptide Conformational Sampling Using The Quantum Approximate Optimization Algorithm Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we explore the potential of quantum computing to solve a simplified version of protein folding. |
Sami Boulebnane; Ashley Montanaro; Stanislaw Adaszewski; Xavier Lucas; Agnes Meyder; |
| 647 | TETRIS-ADAPT-VQE: An Adaptive Algorithm That Yields Shallower, Denser Circuit Ansätze Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we introduce a variation of the algorithm dubbed TETRIS-ADAPT-VQE which modifies the way the ansatz is constructed by adding multiple unitaries with disjoint supports in each iteration. |
Panagiotis Anastasiou; Yanzhu Chen; Sophia Economou; Edwin Barnes; Nicholas Mayhall; |
| 648 | Variational Quantum Chemistry Requires Gate-error Probabilities Below The Fault-tolerance Threshold Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The variational quantum eigensolver (VQE) is a leading contender for useful quantum advantages in the NISQ era. The interplay between quantum processors and classical optimisers … |
David Arvidsson-Shukur; Kieran Dalton; Christopher Long; Crispin Barnes; Normann Mertig; Yordan Yordanov; Charles Smith; |
| 649 | Improved QOCA Ansatz Using An Adapt-VQE Approach Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Can we make the circuits shallower? In this talk we address these questions and show that the circuit depth and the number of CNOTs can be reduce by combining the QOCA ansatz with the adaptive method adapt-VQE [Grimsley et al. (2019)]. |
Camille Le Calonnec; Maxime Dion; Alexandre Choquette; Alexandre Blais; |
| 650 | Implementing Pulse-based VQE (ctrl-VQE) Algorithm on NISQ Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present the minimum time control pulses for ctrl-VQE to prepare target molecular ground states for a given device’s Hamiltonian [2]. |
Chenxu Liu; Ayush Asthana; Tongyu Zhao; Raymond Simmonds; Nicholas Mayhall; Edwin Barnes; Sophia Economou; |
| 651 | Variational Quantum Eigensolver Ansatz for The J1-J2-model Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose an ansatz for the variational quantum eigensolver to approximate the ground state of an antiferromagnetic J 1-J 2 Hamiltonian for different lattice sizes and different ratios of J 1 and J 2. |
Verena Feulner; Michael Hartmann; |
| 652 | Unbiased Quantum Simulation with Feynman’s Iη Prescription Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we revisit unbiased quantum simulation in the context of quantum phase estimation while introducing Feynman’s iη prescription. |
Woo-Ram Lee; Ryan Scott; Vito Scarola; |
| 653 | Orbital Optimized ADAPT-VQE for Molecular Simulation on NISQ Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will present our group’s new developments that deal with including orbital relaxation along with iterative ansatz construction in ADAPT-VQE. |
Ayush Asthana; Sophia Economou; Edwin Barnes; Nicholas Mayhall; |
| 654 | Quantum Data Center: Theories and Applications Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose the Quantum Data Center (QDC), an architecture combining Quantum Random Access Memory (QRAM) and quantum networks. |
Junyu Liu; Liang Jiang; Connor Hann; |
| 655 | Quantum-Accelerated Distributed Algorithms for Approximate Steiner Trees and Directed Minimum Spanning Trees Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present two algorithms in the Quantum CONGEST-CLIQUE model of distributed computation that succeed with high probability; one for producing an approximately optimal Steiner Tree, and one for producing an exact spanning arborescence of minimum weight, the analog of a Minimum Spanning Tree in a directed graph, each of which uses O~(n^(1/4)) rounds of communication and O~(n^(9/4)) messages, achieving a lower round and message complexity than any known algorithms in the classical CONGEST-CLIQUE model. |
David Bernal Neira; Eleanor Rieffel; Phillip Kerger; |
| 656 | Optimal Control Policies for Distributed Quantum Computing with Quantum Walks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: One of the key capabilities that quantum networks must support to DQC is the execution of quantum controlled gates among qubits residing in geographically separated quantum computers. In order to perform such control, we describe a quantum walk network control plane protocol that captures the logic operations needed for the execution of remotely controlled quantum gates. |
Matheus Guedes de Andrade; Don Towsley; Wenhan Dai; Saikat Guha; |
| 657 | Synchronization of FNAL and ANL for Quantum Communications Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the properties of the Raman scattering for the clock signal in the optical fiber used in the network, determining that we have a Raman scattering coefficient of 20.8 ± 0.3 x 10-10 for the L-band and 4.6 ± 0.1 x 10-10 for the O-band. |
Keshav Kapoor; |
| 658 | Adaptive, Continuous Entanglement Generation for Quantum Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present a scheme for continuous generation of entanglement utilizing an adaptive method to better tailor generated entanglement links to incoming requests and reduce latency. |
Alexander Kolar; Allen Zang; Joaquin Chung Miranda; Martin Suchara; Rajkumar Kettimuthu; |
| 659 | Towards A Global Satellite Quantum Network: Optimized Entanglement Distribution in A Dynamic Satellite System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The goal of this project is to simulate an entanglement distribution scheme via a quantum global network, in which a quantum repeater architecture is used. |
Elsie Loukiantchenko; Jai Grover; Johannes Pseiner; |
| 660 | Experiments on An Entanglement-based Quantum Network in The Lab Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantum networks promise the ability to distribute quantum entangled states over large distances for the purposes of quantum communication, distributed and blind quantum computation, or quantum sensing. |
Alejandro Rodriguez-Pardo Montblanch; Mariagrazia Iuliano; Benjamin van Ommen; Nicolas Demetriou; Sophie Hermans; Johannes Borregaard; Tim Taminiau; Ronald Hanson; |
| 661 | Quantum Networks Status and Prospects Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report our progress towards each of the stages including distribution of weak coherent states, generation and distribution of entangled states using fibers and free space as quantum channels and finally interfacing with hybrid species that are able to hold and process the quantum information. |
Venkata Ramana Raju Valivarthi; |
| 662 | Modeling Short-range Quantum Networks for Scaling Superconducting Quantum Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose chiplet architectures connected over microwave links with potential to exceed monolithic performance on near-term hardware. |
Nicholas LaRacuente; Kaitlin Smith; Poolad Imany; Kevin Silverman; Fred Chong; |
| 663 | Scalable Surface-code Quantum Error Correction Based on Cavity-QED Network Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we propose a scalable and practical architecture with a cavity network, each cavity including neutral atoms as data qubits. |
Rui Asaoka; Yasunari Suzuki; Yuuki Tokunaga; |
| 664 | Exploring The Potential of Quantum Network Simulators to Guide The Development of Quantum Network Tomography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In classical computer networks, the quality of a given network is assessed using network tomography techniques, however, no equivalent has been developed for a quantum network. In order to address this need, we investigate how to utilize quantum network simulators as a virtual quantum network laboratory for developing quantum network tomography protocols. |
Jake Navas; Jaime Diaz; Matheus Guedes de Andrade; M. Jaden Brewer; Noah Johnson; Michael Raymer; Don Towsley; Inès Montaño; |
| 665 | An Investigation of The Potential of Quantum Game Theory to Control Routing in Quantum Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: More specifically, we present results showing how the superposition and entanglement aspects of quantum mechanics can be used to increase the efficiency of routing inside a quantum network in realistic scenarios. |
Michael Brewer; Noah Johnson; Jake Navas; Jaime Diaz; Inès Montaño; |
| 666 | Optically Accessible Donor Qubits in ZnO Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present our work on synthesizing and isolating single donors in zinc oxide (ZnO). |
Kai-Mei Fu; |
| 667 | Measuring Quantum Correlations in Many-body Systems of Polar Molecules Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have recently developed a novel apparatus for imaging single diatomic molecules in an ultracold gas prepared in well-defined electronic, rovibrational and hyperfine states. I will describe how we used this capability to measure quantum correlations due to the quantum statistics of the molecules or due to entanglement mediated by dipolar interactions. |
Waseem Bakr; |
| 668 | New Platforms for Quantum Sensing and Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will describe our recent efforts to correlate direct materials characterization with single spin measurements to devise methods to stabilize highly coherent NV centers within nanometers of the surface. |
Nathalie de Leon; |
| 669 | Giant Artificial Atoms and Waveguide QED Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present a demonstration of "giant artificial atoms" realized with superconducting qubits in a waveguide QED architecture. |
William Oliver; |
| 670 | Testing Relativity in The Laboratory with Optical Lattice Atomic Clocks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will present the error budget produced from our systematic evaluation, and the recently unblinded results of our first test. |
Shimon Kolkowitz; |
| 671 | Qubit Control Strategies Using Ballistic Fluxons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present measurements of long Josephson junctions for qubit biasing and discuss simulations of measurement and readout circuits based on ballistic fluxons. |
Rupert Lewis; William Kindel; Sueli Skinner-Ramos; C. Thomas Harris; |
| 672 | Single Flux Quantum-Based Digital Control of Superconducting Qubits in A Multi-Chip Module Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we introduce a multi-chip module architecture to suppress phonon-mediated QP poisoning, where the SFQ elements and qubits are fabricated on separate chips that are joined with In bump bonds. |
Chuan-Hong Liu; Alexander Opremcak; Shravan Patel; Owen Rafferty; Andrew Ballard; Vito Iaia; Tianna McBroom; Dan Schmidt; Joel Ullom; David Olaya; John Biesecker; Samuel Benz; Peter Hopkins; Jonathan DuBois; Britton Plourde; Robert McDermott; |
| 673 | Characterization and Suppression of Nonlinearities in A Quantum Control System Employing Direct Digital Synthesis Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In recent years, direct digital synthesis has offered a promising solution by removing the mixer from the signal path entirely [1]. |
Alexander Deters; William Kalfus; Jacob Curtis; Robert Schoelkopf; |
| 674 | A Scalable Quantum Computing Control Architecture Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Control system engineering needs to satisfy challenging, and often competing, requirements of excellent signal quality, high-speed signal processing, low cost, and architecture scalability. Here, we show these challenges are addressed with several innovations in our system control solution. |
Zhixin Wang; Bruno Küng; Mark Kasperczyk; Kent Shirer; Tobias Thiele; Fabian Pfäffli; Tobias Kammacher; Sebastian Dütsch; Edward Kluender; |
| 675 | Frequency Up-Conversion Schemes for Controlling Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While the calibration of their DC-offsets, relative amplitude and phase allows one to cancel unwanted sideband and carrier leakage, this IQ mixing approach suffers from the presence of additional spurious frequency components. Here, we experimentally study an alternative approach based on double frequency conversion, which overcomes this challenge and circumvents the need for IQ-calibration. |
Johannes Herrmann; Christoph Hellings; Stefania Lazar; Fabian Pfäffli; Florian Haupt; Tobias Thiele; Dante Colao Zanuz; Graham Norris; Flavio Heer; Christopher Eichler; Andreas Wallraff; |
| 676 | Scalable and Low-latency Communication of Classical Information for Advanced Quantum Computing and Networking in A Highly Distributed Quantum Control Stack Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We here demonstrate fast feedback protocols between 120 control nodes, for instance capable of controlling and reading out 30 superconducting qubits. |
Damaz de Jong; Jordy Gloudemans; Calin Sindile; Fokko de Vries; Marijn Tiggelman; Rahul Vyas; Maria Garcia; Jeroen van Straten; Wouter Vlothuizen; Jules van Oven; Cornelis Christiaan Bultink; |
| 677 | Signal Processing Perspectives on Pulse Design for Two-Qubit Gates in Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we formulate the problem of pulse design for two-qubit gates in superconducting qubits within the context of classical signal processing. |
Qi Ding; Alan Oppenheim; Petros Boufounos; Simon Gustavsson; Thomas Baran; William Oliver; |
| 678 | Q-Profile: Profiling Tool for Quantum Control Stacks Applied to The Quantum Approximate Optimization Algorithm Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present Q-Profile, an open-source and hardware-agnostic tool to profile quantum control stacks. |
Koen Mesman; Jules van Oven; Francesco Battistel; Jordy Gloudemans; Marijn Tiggelman; Edgar Reehuis; Damaz de Jong; Cornelis Christiaan Bultink; |
| 679 | QICK (Quantum Instrumentation Control Kit): Progress on An Open-source Qubit Controller Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The Advanced Quantum Testbed (AQT) at LBNL collaborated with the QICK team on the development and testing of QICK as an AQT user project, including contributions to multiplexed readout, software integration, motherboard and daughterboard design, and cold-qubit tests. |
Sho Uemura; Leandro Stefanazzi; Ken Treptow; Neal Wilcer; Chris Stoughton; Martin Di Federico; Sara Sussman; David Schuster; Ankur Agrawal; Helin Zhang; Chunyang Ding; Kasra Nowrouzi; Neelay Fruitwala; Gang Huang; Anastasiia Butko; Yilun Xu; Charles Guinn; Andrew Houck; |
| 680 | Scalable Software Defined Radio Platform for Precision Control of Nuclear Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will describe a custom software defined radio (SDR) hardware platform that generates long, repetitive sequences of arbitrary RF waveforms in the 10 MHz-10 GHz range to selectively address individual qubits and actuate sequences of 1- and 2-qubit gates. |
Peter Battaglino; |
| 681 | Efficient Autonomous System-wide Gate Calibration Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we present a quantum control pipeline, based on Clifford circuits, to efficiently perform a system-wide calibration through parallel and automated-closed loop optimization of microwave pulses. |
Marti Vives; |
| 682 | Simulating Self-consistent Reference States on A Quantum Computer Using Optimized Custom Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: It has been shown that the HF method can be implemented on a superconducting quantum computer by realizing the basis rotation using Givens rotations on a parametrized quantum circuit. In this work, we optimize this procedure by employing optimal control pulse theory to find customized microwave pulses that realize the Givens rotation gate. |
Manqoba Hlatshwayo; Kyle Wendt; Elena Litvinova; |
| 683 | Continuous Quantum Gate Sets and Pulse-Class Meta-Optimization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we address the possibility of learning families of optimal-control pulses that depend adaptively on various parameters, in order to obtain a global optimal mapping from the space of potential parameter values to the control space and hence to produce continuous classes of gates. |
Francesco Preti; Felix Motzoi; Tommaso Calarco; |
| 684 | Parallel Window Decoding Enables Scalable Fault Tolerant Quantum Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Superconducting quantum computers can perform QEC rounds in sub-1us time, and so this fundamental problem is also a serious practical concern and an enormous engineering challenge. Here, we present a methodology that parallelizes most decoders and achieves almost arbitrary syndrome processing speed, removing this roadblock to scalability. |
Earl Campbell; Dan Browne; Neil gillespie; Luka Skoric; Kenton Barnes; |
| 685 | Maximum Likelihood Decoders of Stabilizer Codes Under Device Noise Using Tensor Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will present our latest advances in close-to-optimal decoding of stabilizer codes using device-level error models and tensor networks. |
Benjamin Villalonga; |
| 686 | Minimising Failures for The Surface Code Using A Color-code Decoder Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose a matching decoder for the surface code that is specialised to correct depolarising noise. |
Asmae Benhemou; Benjamin Brown; Kaavya Sahay; Lingling Lao; |
| 687 | Real-time Algorithmic Decoding Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present on the first demonstration of a real-time algorithmic decoder on a quantum error correction code. |
Natalie Brown; |
| 688 | Real-Time Decoding for Fault-Tolerant Quantum Computing: Towards Higher Decoding Speed and Lower Communication Latency Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We examine the two issues that need to be addressed to overcome that: decoding speed and communication latency. |
Francesco Battistel; Muhammad Usman; Christopher Chamberland; Swamit Tannu; Ramon Overwater; Fabio Sebastiano; Yosuke Ueno; Luka Skoric; Jordy Gloudemans; Damaz de Jong; Wouter Vlothuizen; Jules van Oven; Cornelis Christiaan Bultink; |
| 689 | Advances in Decoding Schemes for Surface Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The aim of this presentation is to showcase the recent developments we have made (in Tecnun) on the topic of decoding schemes for the aforementioned families of codes. |
Antonio de Marti i Olius; Josu Etxezarreta Martinez; Patricio Fuentes; Pedro Crespo; |
| 690 | Three-dimensional Subsystem Codes from Two-dimensional Topological Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We provide a new perspective on 3D topological subsystem codes in terms of 2D topological codes. Our perspective clarifies the origin of the Gauss law for gauge flux, and through this the origin of the single-shot property. |
Michael Vasmer; Aleksander Kubica; Jacob Bridgeman; |
| 691 | Union–find Quantum Decoding Without Union–find Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The union–find decoder is a leading algorithmic approach to the correction of quantum errors on the surface code, achieving code thresholds comparable to minimum-weight perfect … |
Sam Griffiths; |
| 692 | Fusion Blossom: Parallel MWPM Algorithm for QEC Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report an MWPM algorithm of almost linear complexity given the rare and randomly distributed local quantum errors. |
Yue Wu; Lin Zhong; |
| 693 | Efficient Decoding Schemes for The XYZ2 Hexagonal Stabilizer Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The code is equivalent to a concatenation of a low-level two-qubit error detection code, and a high-level YZZY-type surface code. In this work, we investigate an efficient two-step decoding algorithm that uses the concatenated structure of the code with a minimum-weight perfect matching decoder in order to study its behaviour under biased noise error models. |
Basudha Srivastava; Ben Criger; Hussain Anwar; Anton Kockum; Mats Granath; |
| 694 | Distributed Union-Find Decoder and Its FPGA-based Implementation for Scalable Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report a distributed version of the UF decoder that exploits parallel computing resources to further speed up. |
Namitha Godawatte Liyanage; Yue Wu; Alexander Deters; Lin Zhong; |
| 695 | Improving Belief Propagation Performance for Quantum Error Correcting Codes By Degeneracy-reducing Transformations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To address the problem, we consider BP decoding of codes specially modified to reduce the degeneracy. |
Xingrui Liu; |
| 696 | Entanglement Area Law for 1D Gauge Theories and Bosonic Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will introduce the proof of an entanglement area law for a class of 1D quantum systems involving infinite-dimensional local Hilbert spaces. |
Yu Tong; Yuan Su; Nilin Abrahamsen; Nathan Wiebe; Ning Bao; |
| 697 | Multipartite Entanglement in The Random Ising Chain Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we consider two subsystems of length l separated by a distance r and quantify two measures of multipartite quantum correlations, entanglement negativity (?) |
Jay Zou; Istvan Kovacs; Helen Ansell; |
| 698 | Momentum Space Entanglement from The Wilsonian Effective Action Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The entanglement between momentum modes of a quantum field theory at different scales is not as well studied as its counterpart in real space, despite the natural connection with … |
Matheus Martins Costa; |
| 699 | Entanglement Degradation in Bipartite Systems with A Finite-lifetime Observer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we analyze the influence of an observer finite lifetime in the entanglement of a bipartite system where the other observer is inertial. |
Pablo Lopez-Duque; Abhijit Chakraborty; Carlos Ordonez; Horacio Camblong; |
| 700 | Quantum-engineered Superradiant Phase Transition in The Strong Coupling Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we show that by applying a periodic modulation to the frequency of the two-level systems in a standard Dicke model in the strong coupling regime, where the coupling strength is much less than the qubit and cavity frequencies, an anisotropic Dicke model with tunable rotating and counter-rotating terms in the ultrastrong coupling regime can be achieved. |
Jin-Feng Huang; Lin Tian; |
| 701 | Deconfinement and Error Thresholds in Holography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the error threshold properties of holographic quantum error-correcting codes in the context of the AdS/CFT correspondence. |
ChunJun (Charles) Cao; Ning Bao; Guanyu Zhu; |
| 702 | Design Constraints on A Unruh-DeWitt Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Modeling the qubit-field interactions with Unruh-DeWitt detectors introduces novel quantum devices that offer promising results for computations that pass quantum information from one stationary qubit to another via flying qubit. To see this, we explore Relativistic Quantum Information theory, where there has been significant progress using scalar fields to evaluate quantum information passing onto and off of quantum fields in the regime of strong coupling, a requirement of quantum computing. |
Eric Aspling; |
| 703 | Quantum Reflection of Atoms from 2D Dirac Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that quantum reflection (QR) from two-dimensional (2D) Dirac materials, such as graphene-based structures, can simultaneously serve as a sensitive probe of the fundamental van der Waals (VDW) / Casimir interaction as well as the 2D material’s quasiparticle energy. |
Sang Wook Kim; Mohamed Elsayed; Adrian Del Maestro; Valeri Kotov; |
| 704 | Microwave Spectroscopy of Interacting Andreev Spins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we use a fluxtunable superconducting circuit in external magnetic fields up to 1T to perform spectroscopy of spin-polarized Andreev states up to ~250 mT, beyond which the spectrum becomes gapless. |
Jaap Wesdorp; Francisco Matute-Cañadas; Arjen Vaartjes; Lukas Gruenhaupt; Tom Laeven; Sebastiaan Roelofs; Lukas Johannes Splitthoff; Marta Pita-Vidal; Arno Bargerbos; David Van Woerkom; Peter Krogstrup; Leo Kouwenhoven; Christian Andersen; Alfredo Levy Yeyati; Bernard Van Heck; Gijs de Lange; |
| 705 | Coherence Time for Spin Defects at Aqueous Interfaces Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We considered an NV-like spin defect in graphene and a negatively charged boron-vacancy in hBN. In this talk we discuss how coherence time of defects in these two-dimensional materials in contact with water depend on magnetic field strength, nuclear spin concentration and isotopic composition. |
Alfonso Castillo; Mykyta Onizhuk; Giulia Galli; |
| 706 | Efficient Simulation of Rotation-symmetric Many-boson Open Quantum Systems Via Symmetric Time-dependent Variational Ansatz Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The efficient simulation of the open-quantum-system dynamics of many interacting bosons is a key requirement for the design of optimal bosonic error-correcting codes and for … |
David Schlegel; Fabrizio Minganti; Vincenzo Savona; |
| 707 | The X-Cube Floquet Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Inspired by the coupled-layer construction of the X-Cube model, we introduce the X-Cube Floquet code. |
Zhehao Zhang; David Aasen; Sagar Vijay; |
| 708 | Large-scale On-chip Integration of Hybrid Gate-voltage Addressable Semiconducting Quantum Wells Field Effect Nano-switch Array in Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the electrical response of 18 fabricated chips with a total of 144 field-effect hybrid Nb-2DEG-Nb quantum devices at cryogenic temperatures and study their switching voltage (on/off) statistics, quantum yield, and reproducibility. |
Kaveh Delfanazari; Jiahui Li; YUSHENG XIONG; Peng Ma; Reuben Puddy; Ian Farrer; Sachio Komori; Jason Robinson; Llorenç Serra; David Ritchie; Michael Kelly; Hannah Joyce; Charles Smith; |
| 709 | A Model for Quantum Autonomous Boolean Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: It wasn’t until the early 2000s that more extensive mathematical studies of these networks were undertaken and, while the NK model has been applied to a handful of quantum systems, a direct quantum analog has not been developed. In this work we develop just such a quantum model. |
Ian Durham; |
| 710 | Learning in Finitely-Sampled Quantum Systems 1: Expressive Capacity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce an intuitive notion of expressive capacity in terms of the space of functions that can be computed, and develop a mathematical framework for analyzing the capacity of qubit-based systems in the presence of sampling noise. |
Fangjun Hu; Gerasimos Angelatos; Saeed Khan; Marti Vives; Esin Tureci; Leon Bello; Graham Rowlands; Guilhem Ribeill; Hakan Tureci; |
| 711 | Learning in Finitely-Sampled Quantum Systems 2: Applications Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a practical method for learning in finitely-sampled qubit systems based instead on the expressive capacity analysis from part 1. |
Gerasimos Angelatos; Fangjun Hu; Saeed Khan; Marti Vives; Esin Tureci; Leon Bello; Graham Rowlands; Guilhem Ribeill; Hakan Tureci; |
| 712 | Quantum Persistent Homology for Time Series Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, both of these quantum algorithms consider a data set in the form of a point cloud, which can be restrictive considering that many data sets, like biological signals and stock prices, come in the form of time series. We alleviate this issue by establishing a quantum Takens’s delay embedding algorithm, which identifies a time series with a point cloud by considering an embedding into its phase space. |
Bernardo Ameneyro; George Siopsis; Vasileios Maroulas; |
| 713 | On Training Variational Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider certain training phenomena including under versus over parameterisation and noise effects in variational quantum circuits. |
Jacob Biamonte; |
| 714 | Solving Efficiently Variational Quantum Circuits with Flat Landscapes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a novel optimizer that aims to distill the best aspects of the existing approaches. |
David Fitzek; Robert Jonsson; Christian Schaefer; |
| 715 | Novel Data Encoding Method for Quantum Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work proposes a novel circuit compilation method that achieves O(m) + O((logN)^2) gate depth with the same amount of ancilla qubits. |
Kaiwen Gui; Alexander Dalzell; Alessandro Achille; Martin Suchara; Frederic Chong; |
| 716 | Efficient and Large-Scale Semidefinite Programming with Quantum Neural Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a variational quantum algorithm for semidefinite programs that uses only $n$ qubits, a constant number of circuit preparations, and $O(n^2)$ expectation values in order to solve semidefinite programs with up to $N=2^n$ variables and $M=2^n$ constraints. |
Taylor Patti; Jean Kossaifi; Anima Anandkumar; Susanne Yelin; |
| 717 | Signatures of Double Descent in Deep Quantum Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This violates the long-standing bias-variance trade-off phenomenon. We present thorough empirical evidence of this “double descent” phenomenon in deep quantum neural networks. |
Aroosa Ijaz; Jason Rocks; Juan Carrasquilla; Evan Peters; Marco Cerezo; |
| 718 | Quantifying Information Flow in Parametrized Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, this optimization can be both highly nontrivial and resource demanding, especially when there is a large number of tuneable parameters involved. In the work presented in this talk, an optimization strategy is proposed which aims to mitigate this problem by only working with a subset of the parameters in each step of the optimization. |
Lasse Kristensen; Abhinav Anand; Felix Frohnert; Sukin Sim; Alán Aspuru-Guzik; |
| 719 | Theoretical Guarantees for Permutation-Equivariant Quantum Neural Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we focus on problems with permutation symmetry (i.e., the group of symmetry Sn), and show how to build Sn-equivariant QNNs. |
Louis Schatzki; Martin Larocca; Frédéric Sauvage; Marco Cerezo; |
| 720 | The Quantum Lottery Ticket Hypothesis Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we ask: within an untrained, overparameterized quantum circuit, does there exist a sparse subcircuit that can be trained to produce similar or better accuracy? |
William Simon; Sukin Sim; |
| 721 | Demystifying A Generative Quantum Machine Learning Model Using Information Scrambling and Imaginary Components of Out-of-time Correlators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, these models are still used as a black box, and knowledge of their inner working are limited. In this talk, we demonstrate how a generative model (called the learner), which expresses a quantum state using neural networks, trains itself by exchanging information among its sub-units in real time. |
Manas Sajjan; Vinit Singh; Sabre Kais; |
| 722 | Evaluating The Performance of Sigmoid Quantum Perceptrons in Quantum Neural Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we critically investigate both the capabilities and performance of SQP networks by computing their effective dimension and effective capacity, as well as examining their performance on real learning problems. |
Samuel Wilkinson; Michael Hartmann; |
| 723 | Deterministic Laser-Writing of Spin Defects in Nanophotonic Cavities Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe spin resonance, cavity-integrated photoluminescence, and excited-state lifetimes consistent with conventional defect formation methods, without need for post-irradiation thermal annealing. |
Aaron Day; Jonathan Dietz; Maddie Sutula; Matthew Yeh; Evelyn Hu; |
| 724 | Fabrication of Nanophotonic Structures in Silicon Carbide with Integrated Defects and An Efficient Taper-Fiber Interface Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To boost the overall emission of V Si centers and increase the Debye-Waller factor (resonant emission), photonic crystal cavities (PCC) are highly desirable. Towards this goal, we show direct waveguide-to-fibre coupling [6], achieving near-deterministic efficiencies. |
Marcel Krumrein; Raphael Nold; Lukas Niechziol; Rainer Stöhr; Jonathan Körber; Roman Kolesov; Denis Dertli; Jawad Ul-Hassan; Florian Kaiser; Jörg Wrachtrup; |
| 725 | Towards Quantum Networks Based on The VSi Defect in Silicon-Carbide Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present our recent progress to use V Si defects in SiC for future quantum networks. |
Sjoerd Loenen; Guido van de Stolpe; Laurens Feije; Gerben Timmer; Tijmen de Jong; Tim Hugo Taminiau; |
| 726 | Controlling Optical Properties of The Near-surface Silicon Vacancies in Nanostructured Silicon Carbide Via Surface Passivation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A recent work showed how finite size and surface effects modify not only the frequencies of the quantum emission from the color centers, but also adversely affect a defect’s photo-stability [PRX QUANTUM 3, 020325 (2022)]. Using density functional theory (DFT)-based calculations, we have explored chemical means of mitigating these detrimental effects of surface states in the as-created SiC nanostructures. |
Cyrille Armel Sayou Ngomsi; Pratibha Dev; Tamanna Joshi; |
| 727 | Magnetoelastic Control of Semiconductor Spins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Building on previous demonstrations of acoustically-driven spin manipulation [1], we demonstrate efficient control of individual NV centers using magnetoelastic films coupled to Surface Acoustic Wave (SAW) devices. |
Paul Stevenson; Nathaniel Beaver; Nian Sun; Bin Luo; |
| 728 | Delta-Doped GeV- in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, realizing center-to-center interactions has been a challenge due to the dilute stochastic formation of color centers. In this work, we demonstrate the creation of GeV – in diamond via in-situ depth localized doping (δ-doping) and discuss ways to overcome this interaction limitation. |
Ian Hammock; Nazar Delegan; Xinghan Guo; F. Joseph Heremans; Alexander High; |
| 729 | Indistinguishable Single Photon Emission from Single Erbium Ions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we introduce a new host for single Er ions, CaWO4, that combines a non-polar site symmetry and low magnetic noise environment to significantly improve the optical and spin coherence properties. |
Salim Ourari; Lukasz Dusanowski; Sebastian Horvath; Mehmet Tuna Uysal; Sharon Platt; Jeff Thompson; |
| 730 | Automatic Characterization of Random Nuclear Spin Baths in Semiconductors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present numerical and data-driven methods to extract hyperfine components from short dynamical decoupling experiments, paving the way for automatic high-throughput characterization of defects in semiconductors and for their eventual manipulation to build nuclear memories. |
Abigail Poteshman; Mykyta Onizhuk; Giulia Galli; |
| 731 | Atomic-Scale Visualization and Manipulation of Nitrogen-Vacancy Centers in Nanodiamonds Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Nitrogen vacancy (NV) centers in diamond have emerged as a leading candidate for qubit applications due to their millisecond spin coherence times and optical addressability. While … |
Arjun Raghavan; Seokjin Bae; Vidya Madhavan; |
| 732 | Representation Learning for Identifying Spin-spin Interactions with Reconstructive Latent Embeddings Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an analysis model with nueral network for examining spin-spin interactions in diamond. |
Kyunghoon Jung; Jiwon Yun; Tim Hugo Taminiau; Dohun Kim; |
| 733 | Magnetic Evanescent-wave Johnson Noise from BCS Superconductors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present T 1 for a spin qubit, finding a non-monotonic dependence of T 1 on temperature. |
Hruday Mallubhotla; Maxim Vavilov; Robert Joynt; |
| 734 | Spin Acoustic Control and Metrology with Silicon Vacancies in Silicon Carbide Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work can be applied to the characterization of high quality-factor micro-electro-mechanical systems and has the potential to be extended to a mechanically addressable quantum memory. |
Jonathan Dietz; |
| 735 | Probing Fractional Quasiparticle Mutual Exchange Statistics in Quantum Simulators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: One of the most promising tools is investigating the behaviour of its topological excitations, and in particular their fractional statistics. In this work we put forward a generic route to achieve this, and we illustrate it in the specific case of a $mathbb{Z}_2$ topological spin liquids implemented with the aid of combinatorial gauge symmetry. |
Shiyu Zhou; Claudio Chamon; Claudio Castelnovo; Oliver Hart; Maria Zelenayova; |
| 736 | Single Electron Spin Resonance By Microwave Photon Counting Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report a new method for the detection of single electron spins at millikelvin temperatures. |
Emmanuel Flurin; |
| 737 | Single-Photon Subtraction in Circuit QED Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: As such, an SPS control protocol could in principle be implemented via optimal control techniques; however, we are given no promises about the protocol speed/fidelity tradeoff or its interpretability. We propose principled methods to deterministically and coherently transfer a single microwave photon from a superconducting resonator to a transmon qubit, and compare these with known techniques in the optical domain. |
Christopher McNally; Max Hays; William Oliver; |
| 738 | Progress on 3D Qudit Architecture with High-coherence SRF Cavities Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we demonstrate successful integration of superconducting qubits made by Rigetti with single-cell Nb SRF cavities. |
David van Zanten; Taeyoon Kim; Tanay Roy; Silvia Zorzetti; Matthew Reagor; Mustafa Bal; Roman Pilipenko; Shaojiang Zhu; Srivatsan Chakram; Alexander Romanenko; Anna Grassellino; |
| 739 | Enhancing The Cat’s Lifetime By Squeezing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that squeezing enhances the coherence of cat states against photon loss [4]. |
Xiaozhou Pan; Jonathan Schwinger; Ni-Ni Huang; Pengtao Song; Yifan Li; Fernando Valadares; Atharv Joshi; Wei Pin Chua; Fumiya Hanamura; Yvonne Gao; |
| 740 | Adiabatic Fock State Generation and Faithful Wigner Tomography in A Kerr Nonlinear Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present implementation of adiabatic Fock state generation using Kerr nonlinearity. |
Shiori Fujii; Daisuke Iyama; Takahiko Kamiya; Sangil Kwon; Shohei Watabe; Jiao-Jiao Xue; Jaw-Shen Tsai; |
| 741 | Fast Cat State Generation Using A Kerr Parametric Oscillator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present our experimental results of the fast cat state generation, including Wigner tomography of the KPO state. |
Daisuke Iyama; Shiori Fujii; Takahiko Kamiya; Sangil Kwon; Shohei Watabe; Jiao-Jiao Xue; Jaw-Shen Tsai; |
| 742 | Experimental Universal Gate Set Operation on Cat Qubits in A Kerr Parametric Oscillator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present our experimental results on implementation of universal gate set operation on cat states encoding. |
Takahiko Kamiya; Daisuke Iyama; Shiori Fujii; Sangil Kwon; Shohei Watabe; Jaw-Shen Tsai; |
| 743 | Towards A Bias-preserving CNOT Gate Between Stabilized Cat Qubits (Part 1) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present our progress in realizing a bias-preserving CNOT gate between two stabilized cat qubits. |
Antoine Essig; Nicolas Bourdaud; Joachim Cohen; Nathanael Cottet; Louise Devanz; Pierre FEVRIER; Antoine Gras; Jérémie Guillaud; Efe Gümüs; Mattis Hallén; Venus Hasanuzzaman Kamrul; Sebastion Jezouin; Raphael Lescanne; Paul Magnard; Julien Roul; Natalia Pankratova; Felix Rautschke; Theau Peronnin; Erwan Roverc’h; Jeremy Stevens; Stephane Polis; Jean-Loup Ville; Pierre Wan-Fat; Rémi Rousseau; |
| 744 | Towards A Bias-preserving CNOT Gate Between Stabilized Cat Qubits (Part 2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present our progress in realizing a bias-preserving CNOT gate between two stabilized cat qubits. |
Nathanael Cottet; Nicolas Bourdaud; Joachim Cohen; Louise Devanz; Antoine Essig; Pierre FEVRIER; Antoine Gras; Jérémie Guillaud; Efe Gümüs; Mattis Hallén; Venus Hasanuzzaman Kamrul; Sebastien Jezouin; Raphael Lescanne; Paul Magnard; Natalia Pankratova; Theau Peronnin; Stephane Polis; Julien Roul; Felix Rautschke; Rémi Rousseau; Erwan Roverc’h; Jeremy Stevens; Jean-Loup Ville; Pierre Wan-Fat; |
| 745 | Encoding A Cat-qubit in A 3D Millisecond Lifetime Superconducting Cavity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk on experimental superconducting circuits, we implement a cat-qubit in a millisecond lifetime cavity. |
Ulysse Reglade; Anil Murani; Felix Rautschke; Stephane Polis; Natalia Pankratova; Emanuele Albertinale; Antoine Gras; Theau Peronnin; Phillipe Campagne-Ibarcq; Raphael Lescanne; Sebastien Jezouin; Zaki Leghtas; |
| 746 | Fast Tunable Coupling Scheme of Kerr Parametric Oscillators Using Shortcuts to Adiabaticity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a simple scheme of tunable coupling of KPOs with high tunability in speed and amplitude by using the fast transitionless rotation of a KPO in the phase space based on the counter-diabatic protocol [1]. |
Shumpei Masuda; Taro Kanao; Hayato Goto; Yuichiro Matsuzaki; Toyofumi Ishikawa; Shiro Kawabata; |
| 747 | Thermodynamics of Quantum Switch Information Capacity Activation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This superposition has been shown to be associated with an increase in the communication capacity of the channels, yielding an apparent violation of the data-processing inequality and a possibility to separate hot from cold. We analyze the thermodynamics of this information capacity increasing process. |
Xiangjing Liu; Oscar Dahlsten; Daniel Ebler; |
| 748 | Thermodynamics of Precision in Quantum Non-equilibrium Steady-states Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Importantly, recent studies have shown that they can be violated in the quantum regime, thus motivating the search for analogous quantum counterparts. In this paper, we show that the geometry of quantum nonequilibrium steady states alone directly implies the existence of TUR, but with a looser bound, which is not violated by the above recent findings. |
GIACOMO GUARNIERI; |
| 749 | Quantum Energetics of Non-commuting Measurements in A Circuit Quantum Electrodynamics System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Instead, energy is transferred between the measured system and the measuring meter. In this work, we have studied this effect in a circuit quantum electrodynamics system containing a transmon qubit embedded in a 3D microwave cavity. |
Xiayu Linpeng; Maria Maffei; Nicolò Piccione; Samyak Prasad; Léa Bresque; Andrew Jordan; Alexia Auffèves; Kater Murch; |
| 750 | Using A Single Thermometer to Estimate Two Temperatures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider the question: Is it possible to measure two temperatures simultaneously using a single quantum thermometer? |
Harshit Verma; |
| 751 | Critical and Multicritical Points in The Three-dimensional Z2 Gauge Theory with Matter — An Information Bottleneck Perspective Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While this type of data is accessible for 2D critical systems via direct diagonalization techniques, for 3D critical systems we are not aware of a competing method capable of extracting such information in practice. We will briefly discuss the bearing of our numerical findings on the conjecture that the multi-critical point in this 3D system is an emergent XY theory. |
Zohar Ringel; Lior Oppenheim; Snir Gazit; Maciej Koch-Janusz; |
| 752 | Low-power-consumption Quantum Analog Ising Machine Based on Overdamped Bistability with Stochastic Resonance Effect Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To break through the existing limitation on power consumption, this work proposes an overdamped bistable stochastic resonance unit (OBSRU) as the nonlinearity for constructing the GIM. |
Zhiqiang Liao; Hiroyasu Yamahara; Hitoshi Tabata; |
| 753 | Finite-Time Dynamical Phase Transition in Nonequilibrium Relaxation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We derive a dynamical Landau theory for the transition that applies to a range of systems with scalar, parity-invariant order parameters. |
Jan Meibohm; Massimiliano Esposito; |
| 754 | Hidden Mattis Order and Dynamic Correlations in The Annealed Ising Spin Glass Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To better understand the static and dynamic correlations implied by the hidden order, we performed detailed numerical simulations of the Sherrington-Kirkpatrick (SK) Ising spin glass model with annealed coupling constants. |
Ding Wang; Lei-Han Tang; |
| 755 | Unexpected Upper Critical Dimension for Spin Glass Models in A Field Predicted By The Loop Expansion Around The Bethe Solution at Zero Temperature Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The spin-glass transition in a field in finite dimension is analyzed directly at zero temperature using a perturbative loop expansion around the Bethe lattice solution. The loop … |
Gianmarco Perrupato; Maria Chiara Angelini; Giorgio Parisi; Federico Ricci-Tersenghi; Carlo Lucibello; Tommaso Rizzo; |
| 756 | On The Structure of The Active Fokker-Planck Equation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently, it has been experimentally discovered, and theoretically proved, that the stationary velocity distribution function of a non-interactive active stochastic system is bimodal. In this work, we theoretically reveal the condition under which a bimodal distribution will arise, and the condition under which this bimodal distribution will become Gaussian. |
pedro herrera avila; Mario Sandoval; |
| 757 | Gate Sequence Optimization for Quantum State Tomography Under Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we investigate the effect of noise on the optimal QST measurement sets for two noise models: depolarization and over-under-rotation in two-qubit gates [2]. |
Violeta Ivanova-Rohling; Niklas Rohling; |
| 758 | Self-consistent Noise Characterization of Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a practical protocol for quantum device noise characterization which, by reducing the quantum environment to an effective classical noise spectrum model, is also predictive. |
Won Kyu Calvin Sun; |
| 759 | Calibration of Drive Non-linearity for Arbitrary-angle Single-qubit Gates Using Error Amplification Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we use a measurement based on error amplification to characterize and correct the small single-qubit rotation errors produced by the non-linear scaling of the qubit drive rate with the amplitude of the programmed pulse. |
Stefania Lazar; Quentin Ficheux; Johannes Herrmann; Ants Remm; Nathan Lacroix; Christoph Hellings; François Swiadek; Dante Colao Zanuz; Graham Norris; Mohsen Panah; Alexander Flasby; Michael Kerschbaum; Jean-Claude Besse; Christopher Eichler; Andreas Wallraff; |
| 760 | Linear Cross Entropy Benchmarking with Clifford Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we propose conducting linear XEB with Clifford circuits, a scheme we call Clifford XEB. |
Linghang Kong; Jianxin Chen; Dawei Ding; Cupjin Huang; |
| 761 | Comparison of Random Circuit Sampling on Quantum and Classical Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we compare the samples generated by the Sycamore and Zuchongzhi quantum processors, and classical computers using tensor networks We found that the heat maps of all samples show stripe patterns. |
Sangchul Oh; Sabre Kais; |
| 762 | Error Minimization for Fidelity Estimation of GHZ States with Arbitrary Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work considers a scenario in which multiple nodes share noisy GHZ states. |
Liangzhong Ruan; |
| 763 | Detecting Measurement Induced Phase Transition on SuperconductingQuantum Computers with Neural Network Decoders Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While recently such phase transitions have been observed in small-size random circuits, there is still no realization of these phase transitions in large scale quantum computers. In this work, we study the entanglement entropy of an ancilla qubits which is initially entangled to the circuit, as a local probe that can detect this phase transition. |
Hossein Dehghani; Mohammad Hafezi; Michael Gullans; |
| 764 | Learning The Structure of Quantum Phases of Matter with A Quantum Convolutional Neural Network Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a model-independent protocol for training QCNNs to discover order parameters which are unchanged under phase-preserving perturbations. |
Yu-Jie Liu; Michael Knap; Frank Pollmann; |
| 765 | Universal Compilation for Quantum State Tomography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose a universal compilation algorithm for quantum state tomography in low-depth quantum circuits. |
Le Bin Ho; Vu Tuan Hai; |
| 766 | No-Go Theorem for A Quantum-Illumination Ranging Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, currently it is uncertain if this improvement can be used for ranging applications. In this work, we use tools of quantum information theory to show that this improvement is impractical in time-of-flight (ToF) ranging. |
Lior Cohen; |
| 767 | Quantum Bounds and Structured Receiver Performance for Discriminating Mixed States Generated By Weak Measurement and Thermal Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We calculate the Helstrom bound for the case where a single copy of the quantum state is available for measurement and the quantum Chernoff bound, where copies of the quantum state occupy many modes and can be measured individually or with a joint measurement. |
Piper Wysocki; Jonathan Habif; Federico Spedalieri; |
| 768 | Only Classical Parameterized States Have Optimal Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This question has been extensively studied when one has an a priori belief about the parameter (the Bayesian regime) or in the limit of infinitely many copies of a state (the asymptotic regime). In this talk, we address this question in a more experimentally realistic scenario. |
Wilfred Salmon; David Arvidsson-Shukur; Sergii Strelchuk; |
| 769 | Power of Sequential Protocols in Hidden Channel Discrimination Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we propose Hidden QCD, a QCD problem in which the queries involving initial state, quantum operations, and measurements to the hidden system are all subject to experimentally-relevant restrictions. |
SHO SUGIURA; Arkopal Dutt; Sina Zeytinoglu; William Munro; Isaac Chuang; |
| 770 | Approximate 2-localization of Random Matrices: The Random Matrix Universe Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Quantum many-body systems are endowed with a tensor product structure. This structure is essentially inherited from probability theory, where the probability of two independent … |
Nicolas Loizeau; Dries Sels; |
| 771 | Maximum Entropy Methods for Quantum State Compatibility Problems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we apply MaxEnt to solve various quantum state compatibility problems, including the quantum marginal problem. |
Bei Zeng; |
| 772 | The Quantum Low-rank Approximation Problem Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In principal, ρ th therefore consists of a convex combination of an exponential number of pure states, but for small temperatures, it’s a good approximation to truncate to a small low-energy subspace. We make this truncation rigorous by defining and solving the quantum analog of the famous "low-rank approximation problem" which asks for the matrix B closest to A satisfying rank(B) <= R. |
Nic Ezzell; Zoe Holmes; Patrick Coles; Elliott Ball; Aliza Siddiqui; Mark Wilde; Andrew Sornborger; |
| 773 | Detecting Entanglement By Pure Bosonic Extension Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we use a method called pure bosonic extension to significantly improve the feasibility of k-symmetric/bosonic extensions which characterize the separable set from outside by a hierarchy structure. |
Xuanran Zhu; |
| 774 | Experimental Study of Quantum Uncertainty from Lack of Information Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This question has been addressed in the previous literature where the authors argue that in the entropic formulation of the uncertainty principle that can be illustrated using the so-called, guessing games, indeed such lack of information has a significant contribution to the arising quantum uncertainty. Here we investigate this issue experimentally by implementing the corresponding two-dimensional and three-dimensional guessing games. |
Filip Rozpedek; Yuan-Yuan Zhao; Zhibo Hou; Kang-Da Wu; Guo-Yong Xiang; Chuan-Feng Li; Guang-Can Guo; |
| 775 | Master Equation Emulation and Coherence Preservation with Classical Control of A Superconducting Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate a systematic method for engineering specific system-environment interactions and emulating non-Markovian master equations of a particular form–generalized Markovian master equations–using classical stochastic noise. |
Evangelos Vlachos; Haimeng Zhang; Vivek Maurya; Jeffrey Marshall; Tameem Albash; Eli Levenson-Falk; |
| 776 | Amplitude Damping Channels in Multilevel Systems: There’s More Than You Think Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Many of its information theoretic properties, notably its quantum capacity, are understood. Here we discuss the possible generalizations of these relaxation processes in multilevel systems (qudits). |
Stefano Chessa; Vittorio Giovannetti; |
| 777 | Randomized Channel-state Duality Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present a randomized channel-state duality. |
Bin Yan; Nikolai Sinitsyn; |
| 778 | Magic Phase Transitions in Random Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present numerical and analytic characterizations of the magic transition. |
Christopher White; Pradeep Niroula; Qingfeng Wang; Christopher Monroe; Crystal Noel; Michael Gullans; |
| 779 | Magic: A New Perspective on Quantum Chaos Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show that the resource theory of magic is closely connected to the theory of quantum chaos: we provide a measure of non-Cliffordness for unitary operators based on high order OTOCs and, as a consequence, only those quantum evolutions that attain a quantum computational advantage over classical computation can be considered chaotic. |
Lorenzo Leone; Salvatore Francesco Emanuele Oliviero; Alioscia Hamma; |
| 780 | Simple and High-precision Hamiltonian Simulation By Compensating Trotter Errors with Linear Combination of Unitary Operations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose two types of composite algorithms with unique advantages in various regions. |
Pei Zeng; jinzhao sun; Liang Jiang; Qi Zhao; |
| 781 | Improved Trotter Formula for Time-dependent Hamiltonians Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this project, we propose an extended Trotter formula for Hamiltonian simulation in the time-dependent case. |
SHO SUGIURA; Asir Abrar; Isaac Chuang; Tatsuhiko Ikeda; |
| 782 | Rapid Quantum Approximate Solvers for Combinatorial Optimisation Problems Inspired By Hamiltonians for Optimal State-transfer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we suggest a new design heuristic to tackle combinatorial optimisation problems, inspired by Hamiltonians for optimal state-transfer. |
Robert Banks; Dan Browne; Paul Warburton; |
| 783 | Quantum Dynamics Simulation and Its Application to Hamiltonian Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will discuss a few ways to weaken the strong operator norm dependence in quantum simulation tasks by taking into account the the initial condition and observables. |
Di Fang; |
| 784 | SQuISH: Self-consistent Quantum Iteratively Sparsified Hamiltonian Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a new paradigm for improving Hamiltonian simulation and reducing the cost of ground state problems based on ideas recently developed for classical chemistry simulations. |
Diana Chamaki; Stuart Hadfield; Katherine Klymko; Bryan O’Gorman; Norm Tubman; |
| 785 | A Variational Quantum Algorithm for Hamiltonian Diagonalization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a variational algorithm for Hamiltonians diagonalization (VQHD) of quantum systems, which explores the important physical properties, such as temperature, locality, and correlation, of the system. |
ZHANG CHAO; |
| 786 | Efficient Calculation of Energy Derivatives on A Fault-Tolerant Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present new algorithms for efficiently calculating energy derivatives on fault-tolerant quantum computers, exploiting existing state-of-the-art techniques, including block encoding of fermionic operators, use of higher order finite difference formula, and Heisenberg-limited expectation value estimation methods. |
Raffaele Santagati; Thomas O’Brien; Michael Streif; Nicholas Rubin; Yuan Su; William Huggins; Joshua Goings; Nikolaj Moll; Elica Kyoseva; Matthias Degroote; Christofer Tautermann; Joonho Lee; Dominic Berry; Nathan Wiebe; Ryan Babbush; |
| 787 | Hamiltonian Simulation Via Quantum Assisted Cartan Decomposition and Iterative Block Diagonalization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we advance this method in two aspects. |
Efekan Kökcü; Alexander Kemper; |
| 788 | Quantum Hamiltonian Descent Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose Quantum Hamiltonian Descent (QHD) as a truly quantum counterpart of classical gradient methods for continuous optimization, which is derived by quantizing dynamical systems referring to the continuous-time limit of gradient methods through the path integral formulation of quantum mechanics. |
Jiaqi Leng; Ethan Hickman; Joseph Li; Xiaodi Wu; |
| 789 | Optimal Fermion-qubit Mappings Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a new way to design fermion-qubit mappings by making use of the extra degree of freedom – the choice of enumeration for the fermionic modes. |
Mitchell Chiew; Sergii Strelchuk; |
| 790 | Preparing Quantum Many-body Scar States on Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Many models with exact scar states have been constructed, but the fate of scarred eigenstates and dynamics when these models are perturbed is difficult to study with classical computational techniques. In this work, we propose state preparation protocols for individual scar states in a particular model, as well as superpositions of them that give rise to coherent dynamics. |
Erik Gustafson; |
| 791 | Optimizing Fermionic Encodings for Both Hamiltonian and Hardware Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we present a method for generating a fermionic encoding tailored to a set of target fermionic operators and to a target hardware connectivity. |
Riley Chien; Joel Klassen; |
| 792 | Dynamical Simulation of Periodically Driven Systems on Near Term Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In numerical investigations we study transversally driven versions of the Ising, XX-YY, Heisenberg and Axial Next-Nearest-Neighbour Ising models. |
Timo Eckstein; Piotr Czarnik; Refik Mansuroglu; Jianxin Zhu; Michael Hartmann; Lukasz Cincio; Zoe Holmes; Andrew Sornborger; |
| 793 | Stabilizer Subsystem Decompositions for Single- and Multi-mode Gottesman-Kitaev-Preskill Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we introduce a new subsystem decomposition for GKP codes that we call the stabilizer subsystem decomposition, analogous to the usual approach to quantum stabilizer codes. |
Mackenzie Shaw; Arne Grimsmo; Andrew Doherty; |
| 794 | Bias-preserving Operations in Pair-cat Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we generalize the bias-preserving operations to pair-cat codes, which can be regarded as a multimode generalization of cat codes, to be compatible with continuous quantum error correction against both bosonic loss and dephasing errors. |
Ming Yuan; Qian Xu; Liang Jiang; |
| 795 | Efficient Qudit Encoding for Quantum Optics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work investigates qudits defined by the possible photon number states of a single photon in d > 2 optical modes. |
Márton Karácsony; Zoltan Zimboras; László Oroszlány; |
| 796 | Linear Optics and Photodetection Achieve Near-optimal Unambiguous Coherent State Discrimination Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, very little is known about the practical realizations of receivers for unambiguous state discrimination (USD) of coherent states. Here we fill this gap and outline a theory of USD with receivers that are allowed to employ: passive multimode linear optics, phase-space displacements, auxiliary vacuum modes, and on-off photon detection. |
Jasminder Sidhu; Michael Bullock; Saikat Guha; Cosmo Lupo; |
| 797 | Error Resilient Gate Designs for Dissipative Cat Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Hence, cat qubit gates are often only approximated, e.g. using the Zeno dynamics together with the cat stabilization dynamics. In this talk, we will introduce a new perspective on the errors induced by such approximate gate implementations, and build on it to devise four designs that can reduce gate errors by orders of magnitudes at the cost of moderate experimental overhead. |
Ronan Gautier; Mazyar Mirrahimi; Alain Sarlette; |
| 798 | Quantum Error Correction with Dissipatively Stabilized Squeezed Cat Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose and analyze the error correction performance of a dissipatively stabilized squeezed cat qubit. |
Timo Hillmann; Fernando Quijandría; |
| 799 | Error-detectable Logical 2-qubit Gates on Bosonic Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In particular, we must engineer these operations without succumbing to errors in the requisite nonlinear resource. We present a continuous family of two-qubit gates that satisfy these requirements for bosonic qubits housed in microwave cavities with transmon ancillae for quantum control. |
Takahiro Tsunoda; James Teoh; Benjamin Chapman; Stijn de Graaf; William Kalfus; Jacob Curtis; Steven Girvin; Robert Schoelkopf; |
| 800 | Photon-number-selective Two-excitation Transitions for Bosonic Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Being number-selective, these drives do not affect the code states so they can be applied whether an error has happened or not. We present the experimental implementation of the drives and the phase control they enable on superpositions of Fock states. |
Marina Kudra; Tahereh Abad; Mikael Kervinen; Axel Eriksson; Göran Johansson; Fernando Quijandría; Per Delsing; Simone Gasparinetti; |
| 801 | Composite Pulses in Phase Space: Measurement-Free Gate Teleportation with Hybrid Oscillator-Qubit Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recent experimental work has realized universal control of a quantum system by combining fast single-qubit rotations with high-fidelity echoed conditional displacements (ECD), indicating the potential of achieving universal quantum computation with continuous variable (CV) qubits using two-level ancillary qubits. In this talk, we present a framework consisting of entangling and disentangling gadgets for a hybrid oscillator-qubit system that provides an analytical method for constructing these ECD-based circuits. |
Shraddha Singh; Baptiste Royer; Steven Girvin; |
| 802 | Scalable Quantum Computing with Bosonic Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will review recent theoretical and experimental progress in bosonic qubit technology, and present my outlook on the opportunities for scalable fault-tolerance with it. |
Shruti Puri; |
| 803 | Fault-Tolerant Bell Measurements with The 4-Legged Schr?dinger-Cat Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a new scheme to perform destructive Bell measurements on pairs of 4-legged cat codes which requires only a beam-splitter coupling between two cavities and dispersively coupled transmon ancillae. |
Harshvardhan Babla; James Teoh; Jahan Claes; Kaavya Sahay; Neel Thakur; Steven Girvin; Shruti Puri; Robert Schoelkopf; |
| 804 | An Error-detectable Logical Measurement of Two Bosonic Modes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we demonstrate a measurement of the joint photon number parity that relies on a transmon ancilla coupled to just one cavity plus a tunable beamsplitter interaction between cavities, and that detects both ancilla dephasing and decay errors. |
Stijn de Graaf; Sophia Xue; Benjamin Chapman; James Teoh; Neel Thakur; Takahiro Tsunoda; Robert Schoelkopf; |
| 805 | Majorization Ladder in Bosonic Gaussian Channels Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show the existence of a majorization ladder in bosonic Gaussian channels, that is, we prove that the channel output resulting from the nth energy eigenstate (Fock state) majorizes the channel output resulting from the (n+1)th energy eigenstate (Fock state). |
Van Herstraeten Zacharie; Michael Jabbour; Nicolas Cerf; |
| 806 | Superconducting-qubit Readout Via Low-backaction Electro-optic Transduction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The modularity of the transducer and circuit QED system used in this work enable complete isolation of the qubit from optical photons, and backaction on the qubit from the transducer is smaller than that imparted by thermal radiation from the local environment. |
Robert Delaney; |
| 807 | An Integrated Photonic Engine for Programmable Atomic Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose and demonstrate a reconfigurable architecture for multi-site control based on holography and integrated photonic circuitry. |
Ian Christen; Maddie Sutula; Thomas Propson; Hamed Sattari; Gregory Choong; Christopher Panuski; Alexander Melville; Justin Mallek; Scott Hamilton; P. Benjamin Dixon; Adrian Menssen; Danielle Braje; Amir Ghadimi; Dirk Englund; |
| 808 | Towards Efficient Quantum Transduction Between Microwave and Optical Photons with Hybrid Hardware and Hybrid Protocols Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present our recent advances in exploring new transduction hardware platforms based on cavity electro-optical and cavity piezo-optomechanical systems. |
Linran Fan; |
| 809 | Non-reciprocal Interactions and Entanglement Between Optically Levitated Nanoparticles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will review recent results on the coupled dynamics of co-levitated nanoparticles interacting via optical binding and via electrostatic forces. |
Benjamin Stickler; |
| 810 | Microwave-to-optics Conversion in The Quantum Ground State Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, I will present our experimental progress in demonstrating efficient bidirectional microwave-to-optical conversion with an electro-optic device fabricated on an integrated photonic platform in a milli-Kelvin environment. |
Hong Tang; Mingrui Xu; |
| 811 | Revealing Microcanonical Phase Diagrams of Strongly Correlated Electrons on Quantum Computers I Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Inspired by von Neumann’s time-averaged density matrix and recently developed classical shadow tomography technique, we introduce an approach called time averaged classical shadows(TACS) to study the quantum thermodynamic properties. |
Gaurav Gyawali; Mabrur Ahmed; Eric Aspling; Luke Ellert-Beck; Michael Lawler; |
| 812 | Revealing Microcanonical Phase Diagrams of Strongly Correlated Electrons on Quantum Computers II Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a concept called time-averaged classical shadows (TACS), which borrows from the quantum tomography method called classical shadows, as well as Von Neumann’s idea of the time-averaged density matrix, to construct thermal state representations from dynamics data. |
Mabrur Ahmed; Gaurav Gyawali; Michael Lawler; |
| 813 | Adaptive Randomized Measurement: A Practical Route to Achieve Scientific Discovery from Quantum Simulations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To fully utilize their potential, however, one needs to efficiently extract physically relevant features from the simulated many-body states. Here, we propose such an adaptive randomized measurement protocol. |
Wonjun Lee; Cheong Eung Ahn; Hyukjoon Kwon; Gil Young Cho; |
| 814 | Quantum Variational Learning for Quantum Error-correcting Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present VarQEC, a noise-resilient variational quantum algorithm to search for quantum codes with a hardware-efficient encoding circuit. |
Chenfeng Cao; |
| 815 | Reconstructing Thermal Quantum Quench Dynamics from Pure States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we show that the necessary number of pure-state evolutions can be reduced to simulating the largest density matrix elements by weight, capturing the density matrix to a specified precision. |
Jason Saroni; Henry Lamm; Peter Orth; Thomas Iadecola; |
| 816 | Variational Learning Algorithms for Quantum Query Complexity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we develop variational learning algorithms to study quantum query com- plexity, by formulating Uis as parameterized quantum circuits and introducing a loss function that is directly given by the error probability of the query algorithm. |
Zipeng Wu; Bei Zeng; ZHANG CHAO; |
| 817 | The Quantum Fourier Transform Has Small Entanglement Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using the low entanglement property of the QFT, we show that classical simulations of the QFT on a matrix product state with low bond dimension only take time linear in the number of qubits, providing a potential speedup over the classical fast Fourier transform (FFT) on many classes of functions. |
Jielun Chen; |
| 818 | Quantum Boundary Integral Algorithm for Linear and Nonlinear PDEs in Quantum Computation of Fluid Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The aim of this work is to explore how one could reformulate the problem to leverage the advantage of QLSA to encode the nonlinearities, while also preserving the speed-up. |
Sachin Satish Bharadwaj; Balu Nadiga; Stephan Eidenbenz; K. Sreenivasan; |
| 819 | Adaptive Variational Quantum Minimally Entangled Typical Thermal States for Finite Temperature Simulations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Scalable quantum algorithms to simulate quantum many-body systems in thermal equilibrium are under active research. |
Yong-Xin Yao; Jo~{a}o Getelina; Niladri Gomes; Thomas Iadecola; Peter Orth; |
| 820 | Using The Variational Quantum Thermalizer As An Impurity Solver Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Calculating a Green’s function for an impurity model in the framework of dynamical mean field theory (DMFT) incorporating a quantum device is a particularly efficient way to treat extended materials. We present a novel quantum algorithm to solve such quantum impurity problems, using a hybrid quantum-classical approach. |
Johannes Selisko; Maximilian Amsler; Thomas Hammerschmidt; Ralf Drautz; Thomas Eckl; |
| 821 | Green’s Function Approach to Quantum Chemistry on A Quantum Computer Via Dynamical Self-energy Mapping Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a low-depth circuit for quantum chemistry based on the dynamical self-energy mapping (DSEM) paradigm, where a sparse Hamiltonian is created that shares the same dynamical part of the self energy as that of the molecule (evaluated with a simple approximate method). |
Christina Daniel; Barbara Jones; James Freericks; |
| 822 | Koopman Operator Learning for Accelerating Quantum Optimization and Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a data-driven Koopman operator learning approach for accelerating quantum optimization and machine learning. |
Di Luo; Jiayu Shen; Rumen Dangovski; Marin Soljacic; |
| 823 | Neural-network-enabled Hybrid Classical-quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will describe hybrid quantum-classical variational ansatzes that forge entanglement to lower quantum resources overhead [2]. |
Giuseppe Carleo; |
| 824 | Quantum Sensor Network with Probabilistic Entanglment Generation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For a network with a given number of sensors and links characterized by initial link fidelities and probabilities of success, this work outlines when to use entanglement, when to store it, and when it needs to be distilled. |
Emily Van Milligen; Eneet Kaur; Christos Gagatsos; Saikat Guha; |
| 825 | Fulfilling Entanglement’s Optimal Advantage Via Converting Correlation to Coherence Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For this reason, there is a long list of protocols with optimal receivers still elusive long after their debut. We propose a conversion module to capture and transform such quantum correlation to coherent quadrature displacement, which enables the optimal receiver design for a wide range of entanglement-enhanced protocols, including target detection (quantum illumination), phase estimation, classical communication, target ranging and arbitrary thermal-loss channel pattern classification. |
Haowei Shi; Bingzhi Zhang; Quntao Zhuang; |
| 826 | Correlation Spectroscopy with A Network of Quantum Sensors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider a network of quantum sensors, consisting of N qubits, with strong correlated dephasing. |
Tuvia Gefen; Helene Hainzer; Dominik Kiesenhofer; Tuomas Ollikainen; Matthias Bock; Florian Kranzl; Manoj Joshi; Goni Yoeli; Rainer Blatt; Christian Roos; |
| 827 | Fundamental Limits of Spectroscopy of Single Complex Quantum Systems Using Pulsed Quantum Light Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In a setup that probes single molecules in free space, we will calculate fundamental bounds on precision of estimators constructed from continuous field measurements, using an explicit light-matter coupling model. |
Aiman Khan; Animesh Datta; Francesco Albarelli; |
| 828 | Fast and Robust Entanglement of Locally Interacting Spins for Quantum Sensing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a fast and robust dynamical approach to spin squeezing with local interactions, employing a gap-protected countertwisting Hamiltonian, which adds a Heisenberg interaction term to an analog of the canonical two-axis countertwisting (TACT) Hamiltonian. |
Nazli Koyluoglu; Shankari Rajagopal; Gabriel Moreau; Jacob Hines; Ognjen Markovic; Monika Schleier-Smith; |
| 829 | Quantum-Enhanced Doppler Lidar Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a quantum-enhanced protocol to estimate the radial velocity v of a moving target, using an optical frequency-entangled squeezed state composed of a signal and an idler beam as a probe state. |
Maximilian Reichert; |
| 830 | Distributed Quantum Sensing with Continous-variable Entanglement: from Fundamentals to Dark Matter Search Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will introduce recent advances in distributed quantum sensing with continuous-variable entanglement, where the estimation precision of a global property of multiple local parameters is improved. |
Quntao Zhuang; |
| 831 | Demonstration of Quantum Advantage in Microwave Quantum Radar Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Following a proposal by Guha and Erkmen [1], we demonstrate a quantum advantage of up to 1.2±0.1 in a proof-of-principle quantum radar operating at microwave frequencies. |
Réouven Assouly; Rémy Dassonneville; Theau Peronnin; Audrey Bienfait; Benjamin Huard; |
| 832 | Entanglement-Enhanced Optomechanical Sensor Array for Dark Matter Searches Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose entanglement-enhanced optomechanical sensing systems to assist the search for DM with mechanical devices. |
Anthony Brady; Xin Chen; Kewen Xiao; Yi Xia; Zhen Liu; Roni Harnik; Dalziel Wilson; Zheshen Zhang; Quntao Zhuang; |
| 833 | "Achieving The Heisenberg Limit Using Ancilla-free Quantum Error-correcting Codes" Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that, for general Hamiltonian estimation under Markovian noise, whenever the Heisenberg limit is achievable using quantum strategies, our new codes can both achieve the Heisenberg limit and the optimal rate at which the estimation error scales with the number of probes. |
Argyrios Giannisis Manes; Sisi Zhou; Liang Jiang; |
| 834 | Heisenberg Limited Metrology Based on Hilbert Space Fragmentation in An Interacting Inhomogeneous System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose an entanglement-enhanced sensing scheme that is robust against spatially inhomogeneous always-on Ising interactions. |
Atsuki Yoshinaga; Yuichiro Matsuzaki; Ryusuke Hamazaki; |
| 835 | Temperature Estimation of Quantum Environments Using Impurity Probes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we study quantum impurity models as a platform for quantum thermometry. |
George Mihailescu; Steve Campbell; Andrew Mitchell; |
| 836 | Transmon Qubit As A Sensor for Quantum Characteristics of Magnon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we discuss how a photon [3] and particularly a transmon qubit can be used to experimentally observe interesting quantum phenomena such as magnon polarization, squeezing, and entanglement in antiferromagnetic and ferrimagnetic materials. |
Vahid Azimi-Mousolou; |
| 837 | Benchmarking Quantum Computers: Best Practices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In particular, we focus on defining benchmarking and diagnostic methods, the use of error-mitigation, possible weaknesses to gaming strategies and the role of applications-oriented benchmarking in the current landscape of quantum computing. |
Mirko Amico; Dave McKay; Andrew Wack; Petar Jurcevic; Luke Govia; |
| 838 | Validating Models of Quantum Computer Performance Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a generalized process of model validation. |
Megan Dahlhauser; Timothy Proctor; Robin Blume-Kohout; Kevin Young; |
| 839 | Quantum Volume for Measurement-based Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I introduce a framework to map physical noises and imperfections in MBQC processes to logical errors in equivalent quantum circuits, thereby enabling the well-known metrics to characterize MBQC. |
Yuxuan Zhang; Hassan Shapourian; Daoheng Niu; Alireza Shabani; |
| 840 | Elliptic Curve Cryptographic Challenges for Benchmarking Early Fault-tolerant Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we take a first step at quantitatively characterizing the cryptanalytic capabilities of quantum computers in the next decade by developing sets of elliptic curve cryptographic challenges with a fine gradation in difficulty in order to provide accurate statistical signal of the progress of the quantum hardware. |
Pierre-Luc Dallaire-Demers; William Doyle; Timothy Foo; |
| 841 | Characteristics of Optimization Applications As Quantum Performance Benchmarks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Of particular relevance is how the nature of the problem input configuration impacts the solution quality, the length of time required to achieve a solution, and the algorithm limitations uncovered by the benchmarking approach. |
Pratik Sathe; Thomas Lubinski; Carleton Coffrin; Joshua Apanavicius; Catherine McGeoch; David Bernal Neira; |
| 842 | Hardware-efficient Learning of Quantum Many-body States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we generalize the framework of classical shadow tomography to systems where control over individual qubits and measurement capabilities are limited. |
Katherine Van Kirk; Jordan Cotler; Hsin-Yuan Huang; Mikhail Lukin; |
| 843 | A Scalable Classical Verification Reveals The Gap of The State-of-the-art Gaussian Boson Sampling Experiments Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Despite promising experimental progress, most existing validation schemes of GBS experiments merely rule out a few experimentally-motivated alternative physical hypotheses and fail to certify the device’s output distribution directly, which is critical for establishing the computational hardness. Inspired by the symmetry property of Hafnian functions, we propose a scalable classical verification scheme of GBS, based on symmetry testing via a coarse-grained statistical heuristic, with strong theoretical and empirical evidence for its validity. |
Yufan Zheng; Yingkang Cao; Xiaodi Wu; |
| 844 | An Entanglement-based Volumetric Benchmark for Near-term Quantum Hardware Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a volumetric benchmark for near-term quantum platforms based on the generation and verification of genuine entanglement across n-qubits using graph states and direct stabilizer measurements. |
Kathleen Hamilton; Nouamane Laanait; Akhil Francis; Sophia Economou; George Barron; Kubra Yeter-Aydeniz; Titus Morris; Harrison Cooley; Muhun Kang; Raphael Pooser; |
| 845 | Tensor Network Tomography Using Classical Shadows Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present theoretical and numerical progress toward constructing tensor network state ansatzes from classical shadows data. |
Jonathan Kunjummen; Jacob Taylor; |
| 846 | Characterizing Errors on Multi-qubit Superconducting Qubit Processors for Improved Circuit Compilation and Gate Decomposition Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe how we characterize the types of errors afflicting quantum processors, including investigating the context of error with respect to the prior state and multi-qubit environment. |
Ravi Naik; |
| 847 | Variational Approach to Quantum State Tomography Based on Maximal Entropy Formalism Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: From an experiment on a real quantum device, one can obtain the mean measurement values of different operators. With such a data as input, we employ the maximal entropy formalism to construct the least biased mixed quantum state that is consistent with the given set of expectation values. |
Rishabh Gupta; |
| 848 | Detecting Quantum Complexity Using Transformer Based Neural Network (I) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The circuit we choose is a pseudo-random quantum circuit consisting of random one-qubit and local two-qubit gates implemented on 20 qubits, following the reference [1]. |
Kaarthik Varma; Hyejin Kim; Chao Wan; Yiqing Zhou; Yuri Lensky; Kilian Weinberger; Eun-Ah Kim; |
| 849 | Detecting Quantum Complexity Using Transformer-based Neural Network (II) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a model performance on depth classification with varying noise levels, further discussing the possibility of quantum complexity. |
Hyejin Kim; Kaarthik Varma; Chao Wan; Yiqing Zhou; Yuri Lensky; Kilian Weinberger; Eun-Ah Kim; |
| 850 | Driven-dissipative Remote Entanglement for Superconducting Qubits (Part I): Directional Approach Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In part I of this two-talk series, we analyze and extend an existing proposal by Stannigel et al. [1]; there it was shown that continuous driving can stabilize remote entanglement between a pair of qubits connected through a nonreciprocal waveguide. We extend this scheme by coupling each of the qubits to one or more additional qubits in a chain configuration and show that the steady state of the system is formed by independent Bell pairs of remotely entangled qubits, providing an exciting route toward efficient entanglement purification. |
Abdullah Irfan; Xi Cao; Mingxing Yao; Andrew Lingenfelter; Andrew Pocklington; Yuxin Wang; Aashish Clerk; Wolfgang Pfaff; |
| 851 | Driven-dissipative Remote Entanglement for Superconducting Qubits (Part II): General Strategies Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By exploiting subtle symmetry properties, we show that a variety of multi-qubit entangled states can be stabilized, using minimal resources (e.g. correlated loss from a waveguide, local driving, and passive XY couplings). |
Mingxing Yao; Andrew Lingenfelter; Andrew Pocklington; Yuxin Wang; Abdullah Irfan; Xi Cao; Wolfgang Pfaff; Aashish Clerk; |
| 852 | Position-dependent Excitation of Transmon Qubits Embedded in A 3D Waveguide Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently it has been shown [2] that it is possible to generate self-focusing pulses thanks to this non-linear dispersion relation which can theoretically be used to selectively control a qubit. We experimentally demonstrate the control of transmon qubits depending on their position inside such a rectangular waveguide. |
Romain Albert; Maximilian Zanner; Eric Rosenthal; Sílvia Casulleras Guàrdia; Mathieu Juan; Konrad Lehnert; Oriol Romero-Isart; Gerhard Kirchmair; |
| 853 | Absorbing A Directional Microwave Photon with Waveguide Quantum Electrodynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we develop a quantum interconnect composed of an emitter, receiver, and propagation channel that circumvent issues of prior work. |
Aziza Almanakly; Beatriz Yankelevich; Bharath Kannan; Agustin Di Paolo; Alex Greene; Bethany Niedzielski; Kyle Serniak; Mollie Schwartz; Jonilyn Yoder; Joel Wang; Terry Orlando; Simon Gustavsson; Jeffrey Grover; William Oliver; |
| 854 | A Device for Routing Arbitrary Microwave Quantum States in Waveguide Quantum Electrodynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recent efforts having been made [4] to address this issue and have demonstrated controlled directional emissions of flying qubit states in the 0/1 Fock state basis. Here we present a theoretical proposal that extends this functionality to arbitrary quantum states, such as error-correctable bosonic states. |
Xi Cao; Abdullah Irfan; Michael Mollenhauer; Supriya Mandal; Wolfgang Pfaff; |
| 855 | Multimode Entangling Interactions Between Transmons Coupled Through A Metamaterial Ring-resonator: Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In general this causes the ZZ-interaction between the qubits to be large, but we can still acurately predict static qubit-qubit interaction both for only a few kHz aswell as for tens of MHz. In this talk we will present the modeling of this Left-Handed system and compare it to experimental measurements. |
Arne Schlabes; Tianna McBroom; Xuexin Xu; Jaseung Ku; Bradley Cole; Britton Plourde; Mohammad Ansari; |
| 856 | Multimode Entangling Interactions Between Transmons Coupled Through A Metamaterial Ring-resonator: Experiment Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present results characterizing the interactions between the qubit and modes and the interactions between qubits. |
Tianna McBroom; Arne Schlabes; Xuexin Xu; Jaseung Ku; Bradley Cole; Mohammad Ansari; Britton Plourde; |
| 857 | Towards On-demand, All-to-all Connectivity in A Superconducting Qubit Network Using A Ring Resonator Based Coupler Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The coupler design is a modification of the popular gmon coupler [2] with a flux biased Josephson junction. We will present the analysis of this coupler design using finite-element simulations and experimental data to validate its operation. |
Anirban Bhattacharjee; Sumeru Hazra; Jay Deshmukh; Meghan Patankar; Rajamani Vijayaraghavan; |
| 858 | Demonstration of SWAP Gate Between Superconducting and Microwave-photon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate a deterministic SWAP gate between a superconducting atom and a single microwave photon propagating in a waveguide, proposed in Phys. |
Kazuki Koshino; Kunihiro Inomata; |
| 859 | All-to-all Parametric Control of A SNAIL-based Quantum Module Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present our work on the basic building block for our modular approach, a 4-qubit module with all-to-all qubit connectivity, controlled with parametric driving. |
Mingkang Xia; Chao Zhou; Evan McKinney; Jacob Repicky; Boris Mesits; Alex Jones; Michael Hatridge; |
| 860 | Demonstration of Dynamically Reconfigurable Long-Range Photon Exchange in A Multi-Qubit Superconducting Quantum Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose and demonstrate a quantum processor (QPU) architecture using superconducting qubits with a reconfigurable qubit connectivity graph. |
Brian Marinelli; Jie Luo; David Santiago; Irfan Siddiqi; |
| 861 | Implementation of A Quantum Switch with Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present a QSwitch implemented using four transmons, which to our knowledge is the first experimental demonstration of a QSwitch on any qubit platform. |
Connie Miao; Gideon Lee; Liang Jiang; David Schuster; |
| 862 | Toward High-fidelity Inter-chip Entanglement Between Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have engineered a low loss, de-mateable superconducting cable connection that we aim to use as a ‘quantum bus’. |
Michael Mollenhauer; Supriya Mandal; Abdullah Irfan; Xi Cao; Wolfgang Pfaff; |
| 863 | Implementation of Fractional State Transfer on A Superconducting Qubit Chain Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we implement perfect state transfer on a superconducting circuit qubit chain, where an excitation on one end of the chain is transferred to the other end, based on an effective multi-qubit interaction. |
Federico Roy; Maximilian Nägele; Christian Schweizer; Leon Koch; Niklas Bruckmoser; Niklas Glaser; Max Werninghaus; Joao Romeiro; Malay Singh; Gleb Krylov; Stefan Filipp; |
| 864 | A Parametrically Programmable Coupled Oscillator Network Implemented Using Microwave Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a new superconducting platform for implementing CIMs – the parametrically programmable coupled oscillator machine. |
Takuma Makihara; Nathan Lee; Amir Safavi-Naeini; |
| 865 | Adaptive Real-time Operations in Small Spin Qubit Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will present selected examples from our work encompassing multi-dot devices implemented in silicon structures and gallium-arsenide heterostructures, including active-learning algorithms that autonomously explore the charge stability diagram of capacitively coupled quantum dot arrays and spin rotations via real-time estimation of uncontrolled qubit parameters. |
Ferdinand Kuemmeth; |
| 866 | Quiver: Quantum Dot Device Control Software Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we demonstrate the efficacy of Quiver by using it to automate a complex tune-up sequence on an array of 6 Si/SiGe quantum dots implemented with the SLEDGE architecture. |
Ian Jenkins; |
| 867 | An Automated Measurement Sequence for The Calibration of Quantum Dot Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we describe a generally-applicable process for tuning both the charge occupancy and inter-dot coupling of an array of quantum dots, compensating for disorder and building towards coherent operation. |
Reed Andrews; |
| 868 | Charge Control in A 2×2 Semiconductor Quantum-dot Array with Shared Control Electrodes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we demonstrate a scalable QD array formed of shared control gates with row/column addressing, in a GaAs/AlGaAs heterostructure. |
Emmanuel Chanrion; Pierre-André Mortemousque; Baptiste Jadot; Martin Nurizzo; Arne Ludwig; Andreas Wieck; Christopher Bäuerle; Matias Urdampilleta; Tristan Meunier; |
| 869 | Reliable Fabrication of Multi-Spin Qubit Devices in 28Si/SiGe Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We employ a systematic approach of design, fabrication and characterization to provide feedback on the material and device quality at different stages of the fabrication process. |
Sergey Amitonov; Larysa Tryputen; Amir Sammak; Saurabh Karwal; Önder Gül; Yoram Vos; Tumi Makinwa; Rick Wasserman; Delphine Brousse; David Michalak; Nodar Samkharadze; Giordano Scappucci; Lieven Vandersypen; Rabah Hanfoug; |
| 870 | Large-scale Characterization Workflow of Industrial Grade Si-based Qubit Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present here our fast characterization methodology for qubit devices, and present wafer-level (WL) measurements on qubit-array structures at both 300K and 1K. |
Pierre Mortemousque; |
| 871 | An Elongated Quantum Dot As A Distributed Charge Sensor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we study a metal-oxide-silicon (MOS) device where two quantum dot arrays are separated by an elongated quantum dot (340 nm long, 50 nm wide). |
Sofia Patomäki; James Williams; Fabrizio Berritta; Constance Lainé; Michael Fogarty; Ross Leon; Anasua Chatterjee; Julien Jussot; Stefan Kubicek; Bogdan Govoreanu; Ferdinand Kuemmeth; John Morton; Fernando Gonzalez-Zalba; |
| 872 | Quantum Dot Arrays in Linear and Two-dimension Geometries in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we report on state-of-the-art fabrication methods of spin qubit devices that are defined in isotopically purified in-house grown 28Si/SiGe heterostructures. |
Saurabh Karwal; Sergey Amitonov; Larysa Tryputen; Amir Sammak; David Michalak; Marcel Meyer; Florian Unseld; Corentin Déprez; Timo Abswoude; Lieven Vandersypen; Giordano Scappucci; Menno Veldhorst; |
| 873 | Modelling The Electronic Structure of Many Electrons (> 100) with Self-consistent Hartree-Fock Simulations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate here that we are able to simulate multi-electron systems of up to hundreds of electrons using the Hartree-Fock method. |
MengKe Feng; Dylan Liang; Zeheng Wang; Jesus Cifuentes Pardo; Philip Mai; Andrew Dzurak; Arne Laucht; Andre Saraiva; |
| 874 | A New Approach to Simulating Electron Densities Obtained in Scanning Gate Microscopy of Si/SiGe Quantum Dot Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present recent efforts on using domain decomposition methods to combine an electrostatics model of the tip bias and the 3D overlapping gate structure with an approximate solution to the 3D Schroedinger-Poisson equation [4]. |
Gordian Fuchs; Artem Denisov; Christopher Anderson; Mark Gyure; Jason Petta; |
| 875 | Spin Filling in A Silicon Quantum Dot Array Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we show STM-fabrication of a strongly tunnel-coupled 3×3 dot array in which electrons are fully delocalized across the sites. |
Fan Fei; Xiqiao Wang; Ehsan Khatami; Jonathan Wyrick; Pradeep Namboodiri; Joseph Fox; Albert Rigosi; Richard Silver; |
| 876 | AFM-based Charge-Locking in Silicon Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use the tip of an atomic force microscope (AFM) to charge floating metallic gates in multilayer Si/SiGe quantum dot (QD) devices. |
Artem Denisov; Gordian Fuchs; Pengcheng Chen; seongwoo oh; Jason Petta; |
| 877 | Frequency Tunable and Q Switchable Superconducting Resonators for Spin Qubit Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, by utilizing high kinetic inductance superconductors, we demonstrate a versatile resonator design that offers the frequency and Q tunability necessary for developing fast, magnetically driven resonant gates in our micromagnet-free architecture. |
Noah Johnson; Anthony Sigillito; Mridul Pushp; |
| 878 | Exact Solutions of Interacting Dissipative Systems Via Weak Symmetries Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I show how so-called weak symmetries can be used to analytically diagonalize a large class of strongly-interacting dissipative Markovian Lindblad master equations which are relevant to superconducting qubits. |
Alexander McDonald; |
| 879 | Generalized Time-coarse Graining As A Systematic Perturbation Theory Beyond RWA I: An Introduction and Computational Framework Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, these terms often yield non-negligible corrections to the dynamics, and one must go beyond that approximation. Specifically, they can become quite important in the study of parametric couplers and amplifiers, where accurate modeling of the system is critical for achieving high-fidelity operation. |
Leon Bello; Wentao Fan; Aditya Gadontra; Hakan Tureci; |
| 880 | Generalized Time-coarse Graining As A Systematic Perturbation Theory Beyond RWA II: Application to Drive-induced Qubit Transitions in Transmons and Fluxoniums Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present effective time-coarse grained models for transmons and fluxoniums, and derive analytical formulas for the drive-induced transition rates as well as the Purcell decay rate. |
Wentao Fan; Leon Bello; Hakan Tureci; |
| 881 | Modeling The Effects of Quantum Non-Markovian Noise in Strongly Driven Quantum Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently [1], we presented a systematic method based on a generalized cumulant expansion for deriving pseudo-Lindblad Master equations (PLMEs) that can accurately capture the effects of classical, highly correlated noise. |
Peter Groszkowski; Alireza Seif; Jens Koch; Aashish Clerk; |
| 882 | Non-Markovian Noise Affecting Superconductng Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our work, we describe temporally correlated noise processes, that influence the idle evolution of a superconducting qubit. |
Balázs Gulácsi; Guido Burkard; |
| 883 | Floquet Theory for Bichromatic Driving in Single and Two-qubit Quantum Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the dynamics of a single and coupled superconducting qubit system driven by bichromatic pulses. |
Bibek Bhandari; Debmalya Das; Long Nguyen; Yosep Kim; Andrew Jordan; |
| 884 | Experimental Demonstration of The Treatment of Time-dependent Flux in Circuit QED Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present an experimental demonstration of this theory using a fluxonium qubit and investigating the effects of fast flux ramps. |
Jacob Bryon; Daniel Weiss; Xinyuan You; Sara Sussman; Xanthe Croot; Ziwen Huang; Jens Koch; Andrew Houck; |
| 885 | Algebraic Canonical Quantization of Lumped Superconducting Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a systematic canonical quantization procedure for lumped-element superconducting networks [1,2,3] by using a redundant configuration-space description. |
Adrian Parra Rodriguez; Iñigo Egusquiza; |
| 886 | Dirac Physics and Charge Localization Due to Quasiperiodic Nonlinear Capacitances Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose that measurements of the quantum fluctuations of the charge can be used to directly probe the localization effect. |
Tobias Herrig; Jedediah Pixley; Elio König; Roman-Pascal Riwar; |
| 887 | Automated Effective Circuit Hamiltonian Learning with Autoencoders Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: With the aim to enable circuit analysis on larger systems to improve the current experiments, we propose a novel numerical approach relying on machine learning. |
Joséphine Pazem; Mohammad Ansari; |
| 888 | Symplectic Schrieffer-Wolff Perturbation Theory for Superconducting Circuits with Nonreciprocal Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we obtain linear effective couplings between the qubits for superconducting processors formed by low-anharmonicity qubits dispersively coupled through general linear (non)reciprocal devices by applying a full-fledged symplectic version of the Schrieffer-Wolff transformation. |
Lautaro Labarca; |
| 889 | Gyrators, Quantum Wormholes, and Exceptional Points Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We thus aim to show that superconducting circuits provide a novel and highly accessible testbed for quantum gravitational effects. |
Roman-Pascal Riwar; Ahmed Kenawy; Mohammad Atif Javed; Tobias Herrig; Christina Koliofoti; Daniel Kruti; Oleksiy Kashuba; |
| 890 | Quantum Error Correction, Quantum Advantage and Magic Measures with The Gottesman-Kitaev-Preskill Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will review several results around GKP codes. |
Giulia Ferrini; |
| 891 | Beating The Break-even Point By Repetitive Quantum Error Correction on A Photonic Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate a QEC procedure with a logic qubit binomially-encoded in a microwave cavity, dispersively coupled to an ancilla superconducting qubit. |
Yuan Xu; Zhongchu Ni; Sai Li; Xiaowei Deng; Yanyan Cai; Libo Zhang; Weiting Wang; Zhen-Biao Yang; Haifeng Yu; Fei Yan; Song Liu; Chang-Ling Zou; Luyan Sun; Shi-Biao Zheng; Dapeng Yu; |
| 892 | Qubit-oscillator Concatenated Codes: Decoding Formalism & Code Comparison Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop efficient maximum-likelihood decoders for and analyze the performance of three different concatenations of codes taken from the following set: qubit stabilizer codes, analog/Gaussian stabilizer codes, GKP codes, and GKP-stabilizer codes. |
Yijia Xu; Yixu Wang; En-Jui Kuo; Victor Albert; |
| 893 | Protecting Entanglement Via Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will introduce our recent experimental efforts on the protection of entanglement via quantum error correction (QEC). |
Weizhou Cai; Xianghao Mu; Weiting Wang; Jie Zhou; Yuwei Ma; Xiaoxuan Pan; Ziyue Hua; Xinyu Liu; Guangming Xue; Haifeng Yu; Chang-Ling Zou; Luyan Sun; |
| 894 | Deterministic Generation of Qudit Photonic Graph States from Quantum Emitters Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose and analyze deterministic protocols to generate qudit photonic graph states from quantum emitters. |
Zahra Raissi; Sophia Economou; Edwin Barnes; |
| 895 | Scalable Surface Code Decoders with Parallelization in Time Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a sliding-window decoding scheme that provides fast classical processing for common topological codes through parallelism. |
Fang Zhang; |
| 896 | Autonomous Global Decoders for Quantum Memories Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider a simple theoretical model of universal global autonomous decoders that can be constructed from a wide family of quantum codes. |
Oles Shtanko; Yu-Jie Liu; Simon Lieu; Victor Albert; Alexey Gorshkov; |
| 897 | Imaging Stars with Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a general framework for using quantum error correction codes for protecting and imaging starlight received at distant telescope sites. |
Zixin Huang; |
| 898 | Experimental Quantum End-to-End Learning on A Superconducting Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In the pursuit of quantum advantages for machine learning with noisy intermediate-scale quantum devices, it was proposed that the learning model can be designed in an end-to-end fashion, i.e., the quantum ansatz is parameterized by directly manipulable control pulses without circuit design and compilation. |
Xiaoxuan Pan; Xi Cao; Weiting Wang; Ziyue Hua; Weizhou Cai; Xuegang Li; Haiyan Wang; Jiaqi Hu; Yipu Song; Dong-Ling Deng; Chang-Ling Zou; Re-Bing Wu; Luyan Sun; |
| 899 | Comparing Generalization Performances of Quantum and Classical Generative Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently, a well-defined framework [1] has been proposed to quantify generalization for different generative models on an equal footing. In this work, we aim to build on top of these results to compare the generalization performances of quantum and classical generative models. |
Mohamed Hibat-Allah; Marta Mauri; Manuel Rudolph; Alejandro Perdomo-Ortiz; |
| 900 | Enhancing Quantum Adversarial Robustness Via Randomized Encodings Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a general scheme to protect quantum learning systems from adversarial attacks by randomly encoding legitimate data samples and analytically study the effectiveness of our approaches. |
Weiyuan Gong; Dong Yuan; Weikang Li; Dong-Ling Deng; |
| 901 | Benchmarking of Quantum Generative Adversarial Networks Using NVIDIA’s Quantum Optimized Device Architecture Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we present our results from benchmarking a GPU accelerated hybrid QGAN with a quantum generator and a classical discriminator using Nvidia’s Quantum-Optimized Device Architecture (QODA). |
Pooja Rao; Zohim Chandani; Amalee Wilson; Eric Schweitz; Bruno Schmitt; Anthony Santana; Bryce Lelbach; Alexander McCaskey; |
| 902 | Experimental Quantum Adversarial Learning with Programmable Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report an experimental demonstration of quantum adversarial learning with programmable superconducting qubits. We train quantum classifiers, which are built upon variational quantum circuits consisting of ten transmon qubits featuring average lifetimes of 150~$mu$s, and average fidelities of simultaneous single- and two-qubit gates above 99.94\% and 99.4\% respectively, with both real-life images (e.g., medical magnetic resonance imaging scans) and quantum data. |
Weikang Li; |
| 903 | Renormalisation Through The Lens Of QCNNs Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Then second, the remainder of the circuit simply determines if we are in the ground state of a stabiliser Hamiltonian. If the energy is sufficiently low we consider this to be in the target phase. |
Nathan McMahon; Petr Zapletal; Michael Hartmann; |
| 904 | Dynamical Simulation Via Quantum Machine Learning with Provable Generalization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we develop a framework for using QML methods to simulate quantum dynamics on near-term quantum hardware. |
Joe Gibbs; |
| 905 | Redundant and Synergistic Coding in A Driven Nonlinear Bose-Hubbard Dimer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work suggests how to harness quantum entanglement to encode time-series data efficiently in a small, physically realizable quantum system. |
Krai Cheamsawat; Thiparat Chotibut; |
| 906 | Markovian Quantum Neuroevolution for Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper, we introduce a quantum neuroevolution algorithm that autonomously finds near-optimal quantum neural networks for different machine-learning tasks. |
Zhide Lu; |
| 907 | Learning Protocols for Quantum Entanglement Generation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We here investigate the potential of ML algorithms to drive progress in quantum information science, specifically quantum networks. |
Noah Johnson; Jake Navas; M. Jaden Brewer; Manuel Guerrero; Niquo Ceberio; Inès Montaño; |
| 908 | Quantum Linear Network Coding for Entanglement Distribution in Restricted ArchitecturesNiel De Beaudrap Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I present techniques (developed with Steven Herbert) to distribute entanglement across well-structured graphs G, applying concepts from linear network coding to avoiding the problem of crossings. |
Niel de Beaudrap; Steven Herbert; |
| 909 | Non-Abelian Kondo Anyons – Multiple Quantum Impurities Coupled to Multiple Chiral Edge Modes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: It has recently been conjectured that by utilizing chiral channels (e.g., integer quantum Hall edge states) this could be generalized to multiple impurities, leading to a decoupled non-abelian SU(2) k fusion space with an anyon for each impurity [1,2]. Developing a chiral generalization of Wilson’s numerical renormalization group (NRG), we show that local quantities of impurities coupled to chiral channels are indifferent to the inter-impurity distance [3], and armed with this insight, we introduce a novel mapping of a multi-impurity chiral model to an effective single-impurity model [4], amenable to standard NRG. |
Matan Lotem; Eran Sela; Moshe Goldstein; |
| 910 | Creation Operators for 2+1 Non-abelian Anyons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will show how to find the annihilation operators for any non-abelian anyon theory in 2+1 D, modifying the diagrammatic formalism. |
Nicetu Tibau Vidal; Lucia Vilchez Estevez; |
| 911 | Creating Adiabatic Cat States of Topologically Coupled Quantum Modes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The simplest topological pump consists in a two level system periodically driven in time at two frequencies [1, 2]. We consider a quantum analog of such a pump: two quantum electromagnetic modes strongly coupled to a qubit. |
Jacquelin Luneau; |
| 912 | A Generalized Framework for The Quantum Zeno and Anti-Zeno Effects in The Strong Coupling Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper, we consider the repeated preparation of an arbitrary state of a two-level system that is interacting strongly with an environment of harmonic oscillators. |
Ghazi Khan; |
| 913 | Resonant Generation of Schrödinger Cat States in Circuit QED Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we outline how to create a cat state using a driven qubit-resonator system, and we discuss methods to deal with detuning, cross-talk, leakage and decoherence. |
Mohammad Ayyash; Xicheng Xu; Matteo Mariantoni; |
| 914 | Machine Learning for Improved Current Density Reconstruction from NV-Diamond Magnetometry Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate a domain-transform manifold learning method that significantly exceeds the performance of analytic reconstructions for data with high noise or large standoff distances. |
Niko Reed; Danyal Bhutto; Matthew Turner; Sean Oliver; Kevin Olsson; Nick Langellier; Dmitro Martynowych; Mark Ku; Matthew Rosen; Ronald Walsworth; |
| 915 | Anomalous Temporal Periodicity in The Kicked Top Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present several families of quantum dynamics, each parameterized by dimension, that do not approach the classically chaotic dynamics as predicted by Bohr’s correspondence principle. |
Amit Anand; Jack Davis; Shohini Ghose; |
| 916 | Fast-forwarding Quantum Simulation with Real-time Quantum Krylov Subspace Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose several quantum Krylov fast-forwarding (QKFF) algorithms capable of predicting long-time dynamics well beyond the coherence time of current quantum hardware. |
Cristian Cortes; Stephen Gray; DePrince; III; Eugene; |
| 917 | Simulating Large-size Quantum Spin Chains on Cloud-based Superconducting Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report on cloud simulations performed on several of IBM’s superconducting quantum computers to simulate ground states of spin chains having a wide range of system sizes up to one hundred and two qubits. |
Hongye Yu; Tzu-Chieh Wei; Yusheng Zhao; |
| 918 | Variational Quantum Simulations of The Lindblad Equation on Near-Term Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we introduce a variational hybrid quantum algorithm to simulate the Lindblad master equation for time-evolving Markovian open quantum systems on near-term quantum computers. |
Tasneem Watad; Netanel Lindner; |
| 919 | Simulation of Open Quantum System Dynamics Based on The Generalized Quantum Master Equation on Quantum Computing Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we develop a general-purpose GQME-based quantum algorithm for simulating open quantum system dynamics. |
Yuchen Wang; Ellen Mulvihill; Zixuan Hu; Ningyi Lyu; Saurabh Shivpuje; Yudan Liu; Micheline Soley; Eitan Geva; Victor Batista; Sabre Kais; |
| 920 | Vibrational Structure on Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: With major differences between electronic and vibrational structure of molecules, it is expected that the symmetries of vibrational Hamiltonians may be exploited to obtain quantum advantages prior to the electronic counterpart. Such symmetries are presented in this presentation with emphasis on choice of ansatz and runtime estimates. |
Marco Majland; |
| 921 | Double-bracket Flow Quantum Algorithm for Diagonalization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A quantum algorithm for preparing eigenstates of quantum systems is presented which makes use of only forward and backward evolutions under a prescribed Hamiltonian and phase flips. |
Marek Gluza; |
| 922 | Local Variational Quantum Compilation of Large-Scale Hamiltonian Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a local variational quantum compilation (LVQC) algorithm, which allows us to accurately and efficiently compile time-evolution operators on a large-scale quantum system by optimization with smaller-size quantum systems. |
Yuya Nakagawa; Kaoru Mizuta; Kosuke Mitarai; Keisuke Fujii; |
| 923 | Approximate Encoding of Quantum States Using Shallow Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present an efficient method for creating an approximate encoding of a target state using a limited number of gates [1]. |
Matan Ben Dov; |
| 924 | Simulation of An Exactly-Solvable Nuclear Model on NISQ Devices and Simulators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Noisy Intermediate-Scale Quantum (NISQ) computers are promising tools but are not yet able to perform fault tolerant quantum simulations We use simulation of the exactly solvable Lipkin-Meshkov-Glick (LMG) model as a benchmarking tool for several NISQ devices, simulators and methods. |
Ken Robbins; |
| 925 | Quantum Scientific Machine Learning for Multiphysics Simulations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our work, we combine the efforts made by the classical machine learning community towards Scientific Machine Learning (SciML), i.e. using machine learning to solve and optimize systems governed by DEs, and the recent developments in the field of Quantum Machine Learning (QML), to form Quantum Scientific Machine Learning (QSciML). In the talk we will focus specifically on the advancements of variational quantum algorithms in this direction, including the Differentiable Quantum Circuits paradigm, and present results of their applications in various types of physics and engineering problems towards industrial-scale relevant applications. |
Panagiotis Barkoutsos; Oleksandr Kyriienko; Vincent Elfving; |
| 926 | Expressivity of Variational Quantum Machine Learning on The Boolean Cube Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we investigate quantum embeddings for encoding Boolean-valued data into parameterized quantum circuits used for machine learning tasks. |
Dylan Herman; |
| 927 | Machine Learning for Image Classification on A Trapped Ion Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we report results of applying a hybrid quantum convolutional neural network model for classification of a complex real world dataset of road sign images. |
Jason Iaconis; Sonika Johri; Sang Hyun Kim; Sooncheol Park; Sangtae Kim; Hanlae Jo; |
| 928 | New Approaches to Hamiltonian Simulation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work I will review recent results by my collaborators and I that have changed the way that we think about simulation. |
Nathan Wiebe; |
| 929 | Quantifying Quantum Advantage in Topological Data Analysis Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose, analyze, and optimize an improved quantum algorithm for topological data analysis (TDA) with reduced scaling, including a method for preparing Dicke states based on inequality testing, a more efficient amplitude estimation algorithm using Kaiser windows, and an optimal implementation of eigenvalue projectors based on Chebyshev polynomials. |
Ryan Babbush; |
| 930 | Quantum Algorithms for Approximate Function Loading Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we introduce two approximate quantum-state preparation methods inspired by the Grover-Rudolph algorithm without making use of ancillary qubits, which partially solve the problem of loading real functions. |
Javier Gonzalez-Conde; Gabriel Marin-Sanchez; Mikel Sanz; |
| 931 | Encoding Quantum Circuits in Optimal Tensor Network Structures with Gradient Descent Methods Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose an algorithm to find optimal structures for an arbitrary problem and showcase some examples where a tree structure offers an advantage over a chain while not being much more costly. |
Sergi Masot Llima; |
| 932 | Feedback-based Quantum Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This talk will present feedback-based quantum algorithms (FQAs) as an optimization-free paradigm that is applicable to solving a broad range of problems on quantum computers. |
Alicia Magann; Kenneth Rudinger; Matthew Grace; James Larsen; Christian Arenz; Andrew Baczewski; Mohan Sarovar; |
| 933 | On Nonlinear Transformations in Quantum Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we develop algorithms for implementing nonlinear transformations of input quantum states. |
Yigit Subasi; Zoe Holmes; Nolan Coble; Andrew Sornborger; |
| 934 | Noise-induced Barren Plateaus in Variational Quantum Algorithms Due to Non-unital and Hamiltonian Control Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate the effects of noise on VQA training via simulations. |
Phattharaporn Singkanipa; |
| 935 | Experimental Loading of Normal Probability Distributions to Quantum States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we combine a method for efficiently representing smooth differentiable probability distributions using matrix product states with newly discovered techniques for initializing quantum states to approximate matrix product states. |
Sonika Johri; Jason Iaconis; Elton Zhu; |
| 936 | The Efficient Preparation of Normal Distributions in Quantum Registers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a novel quantum algorithm for the efficient preparation of arbitrary normal distributions in quantum registers. |
Pierre Minssen; Marco Pistoia; Yue Sun; Arthur Rattew; |
| 937 | Quantum Metropolis Solver: QMS Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper, we focus on the Metropolis-Hastings quantum algorithm that is based on quantum walks. |
Roberto Campos Ortiz; Pablo Antonio Casares; Miguel Angel Martin-Delgado; |
| 938 | A Squeezed Mechanical Oscillator with Milli-second Quantum Decoherence Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate a micro-mechanical oscillator coupled to a superconducting microwave circuit with a thermal decoherence rate of only 20.5 Hz (130 quanta/second motional heating rate) and a dephasing rate of 0.09 Hz – on par with and better than, respectively, what has been achieved with trapped ions. |
Mahdi Chegnizadeh; Amir Youssefi; Shingo Kono; Tobias Kippenberg; |
| 939 | Optically Heralded Microwave Photons – Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate a frequency converter that can add a single photon to the microwave field conditioned on the detection of an optical photon. |
Felix Mayor; Wentao Jiang; Sultan Malik; Raphael Van Laer; Timothy McKenna; Rishi Patel; Jeremy Witmer; Amir Safavi-Naeini; |
| 940 | Optically Heralded Microwave Photons – Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Integrated piezo-optomechanical systems are a promising platform for microwave-to-optical quantum frequency conversion. Because of the inherent impedance mismatch between the … |
Sultan Malik; Wentao Jiang; Felix Mayor; Raphael Van Laer; Timothy McKenna; Rishi Patel; Jeremy Witmer; Amir Safavi-Naeini; |
| 941 | Electrostatic Coupling of Microwave Photons and Phonons in A Silicon Phononic Crystal Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the design and measurement of an electromechanical system, which generates interactions between resonant GHz frequency microwave photons and acoustic phonons on a silicon-on-insulator platform. |
Alkim Bozkurt; Han Zhao; Chaitali Joshi; Henry LeDuc; Peter Day; Mohammad Mirhosseini; |
| 942 | Quantum Memory Unit with High-Q Nanomechanical Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present phononic crystal quartz resonators and surface acoustic wave quartz resonators with mechanical modes of high quality factor and small mode volume. |
YANG HU; Angad Gupta; Michael Hatridge; Thomas Purdy; |
| 943 | Schrödinger Cat States of A 16μg Mechanical Oscillator: Part I Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our experiments, we demonstrate the preparation of a mechanical resonator with an effective mass of 16ug in Schrodinger cat states of motion, where the constituent atoms oscillate in a superposition of two opposite phases. This first talk describes the bulk acoustic wave resonator device used in our experiments and the circuit quantum acoustodynamics (cQAD) toolbox we have developed. |
Yu Yang; |
| 944 | Schrödinger Cat State of A 16μg Mechanical Oscillator: Part II Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our experiments we demonstrate the preparation of a mechanical resonator with an effective mass of 16ug in Schrodinger cat states of motion, where the constituent atoms oscillate in a superposition of two opposite phases. This second talk presents experimental results on the preparation of a bulk acoustic wave resonator in Schrödinger cat states with different amplitudes and phases. |
Matteo Fadel; |
| 945 | Phonon-polaritons in The Deep-strong Coupling Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we investigate coupling between vacuum photons and phonons in lead telluride in small-mode-volume terahertz cavities. |
Andrey Baydin; Manukumara Manjappa; Sobhan Subhra Mishra; Hongjing Xu; Fuyang Tay; Dasom Kim; Felix Hernandez; Paulo Rappl; Eduardo Abramof; Ranjan Singh; Junichiro Kono; |
| 946 | Quantum Optomechanics with Superfluid Helium Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will describe our work using single photon detectors to probe the motional states of a superfluid He-4 resonator of mass ∼ 1 ng [1]. |
Yogesh Patil; |
| 947 | Ultracoherent Diamond Nanomechanical Resonators Protected By A Phononic Bandgap Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present the design, fabrication and characterization of diamond-based nanomechanical resonators embedded in a square phononic crystal lattice with mechanical Q-factors exceeding 10^6 at frequencies as high as 100MHz for out-of-plane modes. |
Xinzhu Li; Ignas Lekavicius; Hailin Wang; |
| 948 | Mechanical Frequency Control in Inductively Coupled Electromechanical Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present an investigation into the tuning of the mechanical resonance frequency in an inductively coupled system. |
Thomas Luschmann; Philip Schmidt; Frank Deppe; Achim Marx; Alvaro Sanchez; Rudolf Gross; Hans Huebl; |
| 949 | Building Superconducting Quantum Hardware Towards Error-Corrected Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In my talk, I will present advances in performing qubit readout and two-qubit gates in multi-qubit superconducting quantum processors, which enabled the recent experimental demonstration of repeated quantum error correction in surfaces codes. |
Christopher Eichler; |
| 950 | Spin Qubits: Control, Calibration and Readout in Multi-qubit Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present four directions of active research. |
Anasua Chatterjee; |
| 951 | Recent Advances Toward A More Capable Trapped Ion Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will provide an introduction to Quantinuum’s trapped ion QCCD architecture and highlight some applications implemented on our current H1-series hardware. |
Grahame Vittorini; |
| 952 | Mid-circuit Readout and Error Mitigation on A Dual-species Atom Array Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we use an array of cesium spectator qubits to correct correlated phase errors on an array of rubidium data qubits [1]. |
Hannes Bernien; |
| 953 | Quantum Information Processing Based on Silicon-CMOS Technology Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will discuss the advantages and challenges facing the development of quantum computers employing spin-based quantum processors that can be manufactured using industry-standard silicon CMOS technology. |
Andrew Dzurak; |
| 954 | Two-node Remote Quantum Network Using Silicon-Vacancy Centers in A Diamond Nanophotonic System (Part 1) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the silicon-vacancy (SiV) center in diamond as a promising solid-state quantum network platform capable of deployment in a practical setting. |
Yan Qi Huan; Can Knaut; Pieter-Jan Stas; Daniel Assumpcao; Yan-Cheng Wei; Maddie Sutula; Erik Knall; Aziza Suleymanzade; David Levonian; Mihir Bhaskar; Bartholomeus Machielse; Denis Sukachev; Hongkun Park; Marko Loncar; Mikhail Lukin; |
| 955 | Two-node Remote Quantum Network Using Silicon-Vacancy Centers in A Diamond Nanophotonic System (Part 2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Silicon-vacancy (SiV) centers integrated into diamond nanophotonic crystal cavities provide a high-efficiency spin-photon interface, strong spin-photon interaction, and access to auxiliary memory qubits, which makes them a promising solid-state quantum network platform. In this second part of a two-part talk, we will present on progress towards realizing a quantum link constituted by two SiV-based quantum network nodes spatially separated by 20 meters and connected via optical fiber. |
Can Knaut; Yan Qi Huan; Pieter-Jan Stas; Daniel Assumpcao; Yan-Cheng Wei; Erik Knall; Aziza Suleymanzade; Maddie Sutula; David Levonian; Mihir Bhaskar; Denis Sukachev; Bartholomeus Machielse; Hongkun Park; Marko Loncar; Mikhail Lukin; |
| 956 | Entangling Quantum Memories Via Heralded Photonic Bell Measurement Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that the entanglement rate of the dual rail scheme scales as O(η), and that of the single-rail scheme scales as O(√η). |
Prajit Dhara; Dirk Englund; Saikat Guha; |
| 957 | Enabling Strain Tuning for Cavity-coupled Silicon Vacancy Centers in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Unfortunately, it is difficult to utilize strain tuning in previously demonstrated hole-based diamond nanocavities, due to the poor overlap between the applicable strain profile and the optical mode maxima where SiVs are located. Here we demonstrate a fishbone-like cavity structure that addresses this problem, enabling a color center platform with complete tuning over the inhomogeneous distribution as well as efficient photon extraction. |
Michael Haas; Graham Joe; Kazuhiro Kuruma; Daniel Assumpcao; Katie Barajas; Bart Machielse; Marko Loncar; |
| 958 | All-photonic One-way Quantum Repeaters Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a general framework for all-photonic one-way quantum repeaters based on the measurement-based error correction, which can be adapted to any Calderbank-Shor-Steane codes including the recently discovered quantum low density parity check (QLDPC) codes. |
Daoheng Niu; Yuxuan Zhang; Alireza Shabani; Hassan Shapourian; |
| 959 | An All-Photonic Quantum Repeater Scheme Using Biclique Cluster State Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This makes entanglement routing using the biclique-encoded logical Bell states highly loss tolerant. We analyze the entanglement generation rate vs. distance tradeoff for this repeater scheme. |
Ashlesha Patil; Saikat Guha; |
| 960 | Photonic Qubit Technologies Using Lithium Niobate Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Transmission and processing of quantum information using light has been pursued for decades. As other systems for manipulating quantum information have also flourished, light … |
Neil Sinclair; |
| 961 | Telecom Quantum Networking with A Silicon-vacancy Center in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we report on progress towards deployed quantum networking with SiVs in a metropolitan-scale fiber network. |
Maddie Sutula; Eric Bersin; Yan Qi Huan; Daniel Assumpcao; Yan-Cheng Wei; Pieter-Jan Stas; Aziza Suleymanzade; Can Knaut; Erik Knall; Bartholomeus Machielse; David Levonian; Mihir Bhaskar; Denis Sukachev; Neil Sinclair; Hongkun Park; Marko Lon?ar; Mikhail Lukin; |
| 962 | Quantum Frequency Conversion for QUANT-NET Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: At Quantnet testbed, we connect ion traps, which emit at 854 nm, at LBNL and UCB over a fiber link of 10km via QFC to demonstrate the functionalities of quantum networks. |
Prathwiraj Umesh; |
| 963 | Generating and Characterizing GHZ State Using Time-bin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present an experimental demonstration of time-bin GHZ that is suitable for quantum communication and also interfacing with other entanglement-based networks. |
Rahaf Youssef; |
| 964 | Entangling Remote Qubits Using The Single-photon Protocol: An In-depth Theoretical and Experimental Study Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present a detailed theoretical and experimental study of the single-photon entanglement protocol. |
Sophie Hermans; Matteo Pompili; Laura dos Santos Martins; Alejandro Montblanch; Hans Beukers; Simon Baier; Johannes Borregaard; Ronald Hanson; |
| 965 | Enhancing Quantum Platforms with Efficient and Fast Photon-number-resolving Superconducting Nanowire Single-photon Detectors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report the development of high-efficiency (>90%) PNR detectors based on 1) a parallel architecture that is free of crosstalk and latching with up to 8 pixels or 2) a multi-pixel architecture with up to 14 pixels. |
Félix Bussières; |
| 966 | Entanglement Swapping at Fermilab Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We perform entanglement swapping at Fermilab National Accelerator Laboratory using state-of-the-art superconducting nanowire single photon detectors (SNSPDs) and off-the-shelf fiber-coupled components. |
Maria Spiropulu; Samantha Davis; |
| 967 | Ultrafast All-Optical Switching of Telecom Single Photons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using this technique, we demonstrate a ∼30 GHz, all-optical switch for 1590-nm photons from a heralded single-photon source, achieving a signal-to-noise ratio of ∼160:1. |
Ujaan Purakayastha; Colin Lualdi; Paul Kwiat; |
| 968 | Entanglement Measurement in A Two-photon Generalized Werner State with Single-photon Detection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we extend the method to cover an important case, in which a mixed state is created by adding white noise to the above-mentioned mixed states. |
Salini Rajeev; Mayukh Lahiri; |
| 969 | Optimal Control for Reduced Leakage in Superconducting Qubits Using Bichromatic Driving Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate optimal control for reduced leakage in superconducting transmon qubits using microwave drives for both the 0-1 and 1-2 level transitions. |
Abhishek Chakraborty; Noah Stevenson; Daniel Briseno; Trung Le; Andrew Jordan; Justin Dressel; David Santiago; Irfan Siddiqi; |
| 970 | High Fidelity, Universal Gates on A Noise-decoupled, Coherence Enhanced Flux-tunable Transmon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Flux tunable superconducting qubits often have decay-limited coherence at flux sweet spots but may suffer from high pure-dephasing while they are flux biased away from that sweet spot. We present the results of our experiment, performing fast, high fidelity, universal single-qubit gates, on a noise-decoupled flux-tunable transmon qubit that is biased far away from its flux sweet spot. |
Michael Senatore; Daniel Campbell; Matthew LaHaye; |
| 971 | Learning-based Calibration of Flux Crosstalk in A Transmon Qubit Array Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose an iterative learning-based procedure to calibrate flux crosstalk. |
Cora Barrett; Amir Karamlou; Sarah Muschinske; Ilan Rosen; Alexander Melville; Bethany Niedzielski; Jonilyn Yoder; Mollie Schwartz; Jeffrey Grover; William Oliver; |
| 972 | Power-efficient All-microwave Manipulation of Superconducting Qubits with A Fixed-frequency Transmon Coupler Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, such architecture requires all-microwave entangling gates enabled with precise qubit-frequency allocation, which is a significant burden on design and fabrication. To address this issue, we propose and experimentally demonstrate a novel power-efficient all-microwave entangling gate using a fixed-frequency transmon coupler. |
Shotaro Shirai; Yuta Okubo; Kohei Matsuura; Alto Osada; Yasunobu Nakamura; Atsushi Noguchi; |
| 973 | Error Budget of Parametric-resonance Gates Using A Tunable Coupler Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the parametric-resonance gate activated in a system of two transmons coupled via a tunable coupler. |
Vinay Tripathi; Shobhan Kulshreshtha; Amy Brown; Simon Devitt; Mark Hodson; Jerome Lenssen; Arshpreet Maan; Kevin Obenland; Alexandru Paler; David Perez; Nariman Sadantman; Yuval Sanders; Phattharaporn Singkanipa; Eyob Sete; Josh Mutus; Daniel Lidar; |
| 974 | Controlling Ultrahigh-quality Microwave Resonators with Noisy Nonlinear Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Moreover, this coupling introduces additional cavity decay via the inverse Purcell effect which can easily destroy the advantage of long intrinsic lifetime. In this talk, we will discuss conditions on, and protocols for, efficient control of these ultrahigh-quality microwave cavities using conventional nonlinear circuits. |
Ondrej Cernotik; Iivari Pietikäinen; Radim Filip; Steven Girvin; |
| 975 | Optimized Control of Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using a piecewise-constant pulse parameterization we demonstrate single-qubit pulses as short as 4ns with low leakage out of the computational subspace. |
Stefan Filipp; |
| 976 | Cloaking A Qubit in A Cavity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we introduce a simple approach to engineer a situation where, in the presence of a cavity drive, an atom decouples from the classical part of the cavity field, perceiving the resonator as if it was in the vacuum state. |
Cristóbal Lledó; Rémy Dassonneville; Adrien Moulinas; Joachim Cohen; Ross Shillito; Audrey Bienfait; Benjamin Huard; Alexandre Blais; |
| 977 | Demolition Measurement of Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we combine the reset and the readout pulses to perform an unconditional reset on the qubit. |
Ashutosh Mishra; Shai Machnes; Frank Wilhelm-Mauch; |
| 978 | Optimized Qubit Reset in A Multimode Superconducting Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this setup, the unconditionality of the qubit reset is more challenging and the back-action of the controls further detrimental. Our work explores optimal quantum control in open systems to design feasible and efficient microwave pulse sequences that maximize the gate efficiency and minimize its impact on the logical lifetime of the GKP states. |
Marc-Antoine Lemonde; Valentin Kasper; Dany Lachance-Quirion; Jean Olivier Simoneau; Sara Turcotte; Julien Camirand Lemyre; Philippe St-Jean; |
| 979 | Quantum-circuit Refrigerator for Reset of Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we introduce a single-junction QCR [5] which simplifies the optimal control pulses, removes non-idealities related to junction asymmetry, increases the physical distance between the QCR and the qubit, and provides opportunities for optimizing the coupling strength for inimal spurious dissipation. |
Mikko Möttönen; Timm Mörstedt; Vasilii Sevriuk; Matti Silveri; Gianluigi Catelani; Hao Hsu; Louis Lattier; Maaria Tiiri; Tapio Ala-Nissila; Arto Viitanen; Máté Jenei; Leif Grönberg; Wei Liu; Jami Rönkkö; Fabian Marxer; Matti Partanen; Jukka Räbinä; Johannes Heinsoo; Tianyi Li; Jani Tuorila; Vasilii Vadimov; Juha Hassel; Kuan Tan; |
| 980 | Control of Superconducting Qubits Using A Superconducting Circuit at 3K Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will describe our use of a Josephson pulse generator (JPG) at the 3 K stage of a dilution refrigerator to digitally control a transmon qubit. |
Manuel Castellanos-Beltran; Adam Sirois; Logan Howe; David Olaya; John Biesecker; Paul Dresselhaus; Samuel Benz; Peter Hopkins; |
| 981 | Quantum-noise-limited Amplification of Feeble Microwaves Using A Graphene Josephson Junction-based Microwave Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The core of quantum information processing involves preparing, manipulating, and efficiently detecting quantum states. In cQED architecture probing quantum systems in a … |
Joydip Sarkar; Kishor Salunkhe; Supriya Mandal; Subhamoy Ghatak; Alisha Marchawala; Ipsita Das; Kenji Watanabe; Takashi Taniguchi; R. Vijay; Mandar Deshmukh; |
| 982 | Novel Superconductor-semiconductor Low-noise Amplifier Based on InAs-Al JJFET Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently, Josephson Junction Field Effect Transistors (JJFETs) made from InAs-Al superconductor-semiconductor heterostructures have shown promise for building quantum circuits, thanks to their high carrier mobility and the tunability of their supercurrent. Given this new platform which combines the properties of semiconductors and superconductors, we are developing a gate-voltage-tunable quantum-limited parametric amplifier. |
Zhuoqun Hao; Mehdi Hatefipour; William Strickland; Theodore Shaw; Javad Shabani; Shyam Shankar; |
| 983 | Gate-tunable Kinetic Inductance Parametric Amplifier Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Superconducting parametric amplifiers enable the preparation and readout of quantum states at microwave frequencies and are essential for quantum computing platforms based on … |
Lukas Johannes Splitthoff; Arno Bargerbos; Marta Pita-Vidal; Jaap Wesdorp; Christian Kraglund Andersen; |
| 984 | Radiatively Cooled Superconducting Parametric Amplifier with Near-Quantum-Limited Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate quantum-limited microwave readout with a nanobridge kinetic-inductance superconducting parametric amplifier (NKPA) installed at the 4-K plate of a dilution refrigerator. |
Mingrui Xu; Yufeng Wu; Gangqiang Liu; Hong Tang; |
| 985 | Nonlinearity and Parametric Amplification of Superconducting Nanowire Resonators in Magnetic Field Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate the world’s first parametric amplifier operating at 2000 times higher magnetic fields (2 Tesla), based on the kinetic inductance of a superconducting nanowire (NbTiN) with no penalty for gain and signal-to-noise ratio. |
Mohammad Khalifa; Joseph Salfi; |
| 986 | Non-degenerate Near Quantum-limited Amplification Up to 1T Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a non-degenerate parametric amplifier made of two coupled grAl resonators forming a Bose-Hubbard dimer [6, 7]. |
Nicolas Zapata; Ivan Takmakov; Dennis Rieger; Simon Günzler; Wolfgang Wernsdorfer; Ioan Pop; |
| 987 | Direct Measurement of Microwave Vacuum Squeezing with A Kinetic Inductance Parametric Amplifier Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The uncertainty principle imposes a lower bound on the electromagnetic fluctuations of a vacuum field. Using a phase-sensitive parametric amplifier, it is possible to reduce the … |
Arjen Vaartjes; Wyatt Vine; Anders Kringhoej; Tom Day; Andrea Morello; Jarryd Pla; |
| 988 | Detecting The Internal Energy of Photons Through A Graphene Josephson Inductive Readout, Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Traditional photodetection tools such as MKIDs and SNSPDs rely on Cooper pair breaking, which limits both the energy resolution and bandwidth of the detector. In these talks, we will discuss a new paradigm in photodetection exploiting Graphene Josephson Junctions (GJJ). |
Ethan Arnault; Bevin Huang; Woochan Jung; Caleb Fried; Kenji Watanabe; Takashi Taniguchi; Leonardo Ranzani; Gil-Ho Lee; Dirk Englund; Kin Chung Fong; |
| 989 | Detecting The Internal Energy of Photons Through A Graphene Josephson-Inductive Readout, Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In traditional detectors such as superconducting nanowire and kinetic inductance detectors, the mechanisms for photon detection involve Cooper pair breaking, which imposes a limit on both the energy resolution and bandwidth of the detector. In these talks, we discuss a new paradigm for photodetection exploiting Graphene Josephson Junctions (GJJ). |
Bevin Huang; Ethan Arnault; Woochan Jung; Caleb Fried; Takashi Taniguchi; Kenji Watanabe; Leonardo Ranzani; Gil-Ho Lee; Dirk Englund; Kin Chung Fong; |
| 990 | Dark Matter Search with Single-photon Resolution Quantum Capacitance Detectors (QCDs) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This talk will give an overview of our attempts to characterize a QCD using a weak Josephson Junction based THz photon source. |
Jialin Yu; |
| 991 | Multiplication and Detection of Photons Using Inelastic Cooper-pair Tunneling in Josephson Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we experimentally demonstrate a microwave photon-multiplication scheme based on inelastic tunneling of Cooper pairs through a voltage biased Josephson junction, which multiplies the photon number by an integer factor. |
Nicolas Bourlet; Romain Albert; Joel Griesmar; Florian Blanchet; Ulrich Martel; Max Hofheinz; |
| 992 | A Superconducting Tunable Cavity for Axion Dark Matter Detection in The Microwave Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the development of a tunable cavity architecture using a superconducting quantum interference device (SQUID) through dc flux-biasing while maintaining a good coherence time, allowing us to perform a dark matter mass range scan close to quantum limited noise. |
Fang Zhao; Akash Dixit; Ziqian Li; Tanay Roy; Riju Banerjee; Ankur Agrawal; Andrei Vrajitoarea; Morgan Lynn; Kan-Heng Lee; David Schuster; Aaron Chou; |
| 993 | Superconducting 3D-cavity Architecture for Microwave Single-photon Detection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We exploit the multimode nature of horseshoe aluminum cavities in combination with transmon qubits to experimentally realize an efficient detection of single microwave photons. We analyze the performance of such devices and discuss their possible applications in quantum microwave communication and sensing protocols. |
Kirill Fedorov; Yuki Nojiri; Kedar Honasoge; Michael Renger; Maria-Teresa Handschuh; Florian Fesquet; Fabian Kronowetter; Achim Marx; Rudolf Gross; |
| 994 | Squeezed Light Detection with An Integrated Coherent Optical Receiver Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we develop and realize a silicon photonic integrated coherent receiver with a small form factor, low knee power, and high shot-noise clearance. |
Volkan Gurses; Samantha Davis; Venkata Ramana Raju Valivarthi; Esme Knabe; Maria Spiropulu; Ali Hajimiri; |
| 995 | Software-based Phase Locking of Squeezed Light with Balanced Photodetection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we develop a software-based phase-locking scheme compatible with any balanced detection setup using the coherent receiver output as the error signal. |
Esme Knabe; Volkan Gurses; Samantha Davis; Venkata Ramana Raju Valivarthi; Lautaro Narvaez; Neil Sinclair; Ali Hajimiri; Maria Spiropulu; |
| 996 | Evaluating Niobium-Germanium Heterostructures for Voltage-Tunable Superconducting Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we utilize ultrahigh vacuum evaporation to deposit high-quality Nb layers on Ge (001) substrates. |
Bernardo Langa; Francis Duffy; Deepak Sapkota; Richard Haight; Kasra Sardashti; |
| 997 | Single Crystal Nm-thick Aluminum Superconducting Microwave Resonators with Internal Quality Factors Above One Million Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we have demonstrated single-crystal aluminum (Al) thin films on sapphire substrates with very high crystallinity and high internal quality factors (Qi). |
Yen-Hsun Glen Lin; Lawrence Boyu Young; Li-Shao Chiang; Chao-Kai Cheng; Wan-Sin Chen; Kuan-Hui Lai; Hsien-Wen Wan; Yi-Ting Cheng; Chia-Hung Hsu; Chi-Te Liang; Juhn-Jung Lin; Yen-Hsiang Lin; Jueinai Kwo; Minghwei Hong; |
| 998 | Nitridized Aluminum Thin Films for Superconducting Quantum Technologies Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a novel superconducting material attractive for superconducting quantum circuits: thin-film nitridized aluminum fabricated by magnetron sputtering in nitrogen-argon flows. |
Alba Torras Coloma; Leyre Martínez de Olcoz; Eva Céspedes; David López-Núñez; Elia Bertoldo; Gemma Rius; Pol Forn-Díaz; |
| 999 | Characterizations of Superconducting Ta Films for Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This study demonstrates that the ac susceptibility is an excellent method for characterizing bulk superconducting properties of the constituent materials used in qubits. |
Juntao Yao; Pedro Mercado; Qiang Li; |
| 1000 | High-performance Transmon Qubits with An Epitaxially Grown TiN Film on Si (100) Substrate Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present the properties of our transmons consisting of a shadow-evaporated Al Josephson junction and TiN electrodes grown on Si (100) substrate with domain-matching epitaxy at high temperature. |
Atsushi Noguchi; Shotaro Shirai; Shuhei Tamate; Alexander Badrutdinov; Shion Chen; Toshiaki Inada; Tatsumi Nitta; Shoji Asai; Yuji Hishida; Hirotaka Terai; Yasunobu Nakamura; |