Highlights of Quantum Information (DQI) Talks @ APS 2023 March Meeting – Part 2
American Physics Society (APS) March meeting is one of the largest physics meetings in the world. To help the community quickly catch up on the work presented in this conference, Paper Digest Team processed all accepted work, and generated one highlight sentence (typically the main topic) for each. Readers are encouraged to read these machine generated highlights to quickly get the main idea of each piece of work.
Interested users can choose to read all APS-2023 presentations in our digest console, which supports more features.
To search for work presented at APS-2023 on a specific topic, please make use of the search by venue (APS-2023) service. To summarize the latest research published at APS-2023 on a specific topic, you can utilize the review by venue (APS-2023) service. To synthesizes the findings from APS 2023 into comprehensive reports, give a try to APS-2023 Research. If you are interested in browsing presentations by author, we have a comprehensive list of all APS-2023 authors & their presentations.
This curated list is created by the Paper Digest Team. Experience the cutting-edge capabilities of Paper Digest, an innovative AI-powered research platform that gets you the personalized and comprehensive updates on the latest research in your field. It also empowers you to read articles, write articles, get answers, conduct literature reviews and generate research reports.
Experience the full potential of our services today!
TABLE 1: Highlights of Quantum Information (DQI) Talks @ APS 2023 March Meeting – Part 2
| Paper | Author(s) | |
|---|---|---|
| 1 | Bulk Loss in Silicon Substrates for Superconducting Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we describe a novel testbed based on a 3D stub cavity resonator designed to probe bulk loss in candidate qubit substrates. |
Gabriel Spahn; Francisco Schlenker; John Martinis; Robert McDermott; |
| 2 | Probing Insulating State of A Josephson Junction in Dc and Microwave Domains Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a characterization of the junction’s insulating state, combining conventional dc measurements and a novel technique, which probes the junction’s response to microwave photons. |
Roman Kuzmin; Ray Mencia; Amir Burshtein; Moshe Goldstein; Vladimir Manucharyan; |
| 3 | Room Temperature Growth of Niobium Titanium Alloy Thin Films on Sapphire Substrates for Low Loss Superconducting Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the growth of high quality NbTi thin films on c-plane sapphire (Al 2O 3) substrates using room temperature magnetron sputtering techniques. |
Manabu Tsujimoto; Hiroshi Takashima; Yoshiyuki Yoshida; Mitsuho Furuse; Yoshiro Urade; Takahiro Yamada; Kunihiro Inomata; Wataru Mizubayashi; |
| 4 | Comparison of Nb and Ta Oxides for Potential Magnetic Pairbreaking and Quasiparticle Generation in Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recent studies of transmon qubits where the Nb capacitor is replaced with Ta have shown increases in T 1 decay time by a factor of 3 to 10. We suggest that this dramatic improvement may be due to differences in the native oxide. |
John Zasadzinski; Halle Helfrich; Seth Rice; Thomas Proslier; Lin Zhou; Xiaotian Fang; |
| 5 | Kinetic Inductance Measurement of Niobium Diselenide (NbSe2) Using MicrowaveTechniques Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our approach can be applied to study a wide variety of 2D superconductors relevant to constructing high coherence superconducting quantum circuits. |
Sameia Zaman; Miuko Tanaka; Joel Wang; Thao Dinh; Max Hays; Daniel Rodan-Legrain; David Kim; Alexander Melville; Bethany Niedzielski; Kyle Serniak; Mollie Schwartz; Jonilyn Yoder; Kenji Watanabe; Takashi Taniguchi; Terry Orlando; Jeffrey Grover; Simon Gustavsson; Pablo Jarillo-Herrero; William Oliver; |
| 6 | Quasiparticle Spectroscopy, Transport, and Magnetic Properties of Nb Films Used in Superconducting Transmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Niobium films, 160 nm thick, used as leads to aluminum Josephson junctions in superconducting qubits (transmons) have been characterized using scanning and transmission electron … |
Kamal Joshi; Sunil Ghimire; Makariy Tanatar; Amlan Datta; Jin-Su Oh; Lin Zhou; Cameron Kopas; Jayss Marshall; Josh Mutus; Julie Slaughter; Matthew Kramer; James Sauls; Ruslan Prozorov; |
| 7 | SQMS Nanofabrication Taskforce: Towards Fabrication of High Coherence Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Since its inception, SQMS Center has carried out extensive materials characterization and modeling of superconducting qubits yielding new knowledge and high impact results. The … |
Anna Grassellino; Akshay Murthy; Francesco Crisa; Shaojiang Zhu; David van Zanten; Ivan Nekrashevich; Daniel Bafia; Florent Lecocq; Michael Vissers; Anthony McFadden; David Olaya; Nikolay Zhelev; Dominic Goronzy; Lin Zhou; Peter Hopkins; Yuvraj Mohan; Corey Rae McRae; Tanay Roy; Cameron Kopas; Alexander Romanenko; Josh Mutus; Joel Ullom; Jose Aumentado; |
| 8 | Superconducting Ge Thin Films By Molecular Beam Epitaxy for Quantum Information Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we will discuss our work on doped Ga:Ge films grown by molecular beam epitaxy (MBE) that show superconductivity. |
Patrick Strohbeen; Aurelia Brook; Lukas Baker; Elifnaz Önder; Bassel Heiba Elfeky; Javad Shabani; |
| 9 | Hybrid Bulk/Thin-Film 3D Resonators for Superconducting Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present a way to improve the scalability of bosonic modes without sacrificing their coherence times. |
Lev Krayzman; Chan U Lei; Suhas Ganjam; James Teoh; Luigi Frunzio; Robert Schoelkopf; |
| 10 | Fano Interference in Microwave Resonator Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we show that a systematic error on Q i arises from Fano interference of the signal with a background path. |
Simon Günzler; Dennis Rieger; Martin Spiecker; Ameya Nambisan; Wolfgang Wernsdorfer; Ioan Pop; |
| 11 | The Role of Coulomb Interactions in Few-electron Quantum Dots in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will describe our theoretical work investigating how Coulomb interactions affect the properties of qubits in Si/SiGe quantum dots. |
Ekmel Ercan; |
| 12 | Energy Levels of The One and Two Electrons in A Silicon Quantum Dot Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In silicon, the presence of the nearly degenerate valley states provides an additional complexity to the electron spectrum and dynamics. Here we study the effects of the valley-orbit coupling and the change in its value due to interface roughness on the energy spectrum in the spin blockade regime. |
Bilal Tariq; Xuedong Hu; |
| 13 | Two-spin Relaxation in A Silicon Quantum Dot Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We calculate two-spin relaxation in a silicon quantum dot. |
Courtney Fitzgerald; Xuedong Hu; |
| 14 | Valley Splitting in The Disordered and Deterministic Regimes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that there are two distinct ways to influence valley splitting in Si/SiGe devices: deterministically, using sharp features in the heterostructure, and through disorder, where valley splitting arises due to the random distribution of Ge atoms in the crystal lattice structure. |
Merritt Losert; Rajib Rahman; Giordano Scappucci; Mark Eriksson; Susan Coppersmith; Mark Friesen; |
| 15 | Automated Characterization of A Double Quantum Dot Using The Hubbard Model Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we discuss an automated characterization algorithm that efficiently extracts the Hubbard model parameters including the tunnel coupling and capacitive coupling energy from experimental stability diagrams. |
Will Wang; John Rooney; HongWen Jiang; |
| 16 | Fast Compensation of Rf-QD Charge Sensors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an approach for optimally tuning a radio-frequency sensor dot and for keeping it in tune. |
Joseph Hickie; Barnaby van Straaten; Federico Fedele; Florian Vigneau; Daniel Jirovec; Andrea Ballabio; Daniel Chrastina; Giovanni Isella; Georgios Katsaros; Natalia Ares; |
| 17 | Universal Qubit Control Through FPGA-accelerated Qubit Classification, Hamiltonian Estimation and Real-time Feedback [Part 1] Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, we show how the co-integration of an OPX+ and QDevil’s QDAC [5] can be used to optimize qubit tuning voltages in real time, based on single-shot outcomes of qubit manipulations. |
Joost van der Heijden; Fabrizio Berritta; Torbjørn Rasmussen; Fabio Ansaloni; Federico Fedele; Saeed Fallahi; Geoffrey Gardner; Michael Manfra; Yonatan Cohen; Jonatan Kutchinsky; Anasua Chatterjee; Ferdinand Kuemmeth; |
| 18 | Universal Qubit Control Through FPGA-accelerated Qubit Classification, Hamiltonian Estimation and Real-time Feedback [Part 2] Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we use a singlet-triplet qubit implemented in a gallium arsenide double dot and FPGA-based single-shot readout classification on an OPX+ pulse processor (Quantum Machines [4]) to perform real-time Hamiltonian estimation [5]. |
Fabrizio Berritta; Torbjørn Rasmussen; Joost van der Heijden; Federico Fedele; Jan Krzywda; Saeed Fallahi; Geoff Gardner; Michael Manfra; Evert Van Nieuwenburg; Jeroen Danon; Anasua Chatterjee; Ferdinand Kuemmeth; |
| 19 | Real-time Quantum Dot Stability Diagram Measurement Using On-the-fly Generated Waveforms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: With this approach, we can perform multiple stability diagram measurements in under a second and virtual gate calculations in under 100 ns. |
Marc-Antoine Roux; Larissa Njejimana; Francesco Tafuri; Brendan Bono; Philip Krantz; Marc-André Tétrault; Michel Pioro-Ladrière; |
| 20 | Adaptive Filtering and Classification for Automated Tuning of Quantum Dots Into The Single Electron Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work presents an algorithm for automated tuning of single quantum dots into the single electron regime that is independent of the measurement system used. |
Mathieu Moras; Marc-Antoine Roux; Larissa Njejimana; Stefanie Czischek; Victor Yon; Marc-André Tétrault; Michel Pioro-Ladrière; |
| 21 | Bayesian Methods for Optimising Qubit Quality Factors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present an algorithm which enables the automatic optimisation of qubit quality factors. |
Sebastian Orbell; |
| 22 | Rapid Characterisation of Over 1000 Silicon Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate a fast characterisation methodology for silicon-based quantum dot devices, the physical host of spin qubits. |
Mark Johnson; Domenic Prete; Edward Thomas; Mathieu de Kruijf; David Ibberson; Jonathan Warren; James Kirkman; Grayson Noah; Alberto Gomez Saiz; John Morton; Fernando Gonzalez-Zalba; |
| 23 | Gralmonium: Granular Aluminum Nano-Junction Fluxonium Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we show that in a fluxonium qubit the role of the JJ can also be played by a lithographically defined, self-structured granular aluminum (grAl) nano-junction: a superconductor-insulator-superconductor (SIS) JJ obtained in a single layer, zero-angle evaporation. |
Dennis Rieger; Simon Günzler; Martin Spiecker; Patrick Paluch; Patrick Winkel; Lothar Hahn; Judith Hohmann; Andreas Bacher; Wolfgang Wernsdorfer; Ioan Pop; |
| 24 | Implementation of A Josephson Phase Slip Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we discuss a novel type of superconducting qubit, the Josephson phase slip qubit (JPSQ), a vector spin-1/2 system designed to achieve the static emulation of the full Heisenberg Hamiltonian. We present our implementation of a JPSQ and characterize its tuning with both flux and charge. |
Mallika Randeria; Steven Disseler; Cyrus Hirjibehedin; Thomas Hazard; Steven Weber; Rabindra Das; David Kim; Alexander Melville; Bethany Niedzielski; Jonilyn Yoder; Andrew Kerman; |
| 25 | Quantum Stabilizers Implemented with Superconducting Hardware Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Alternatively, qubits can be designed so that the Hamiltonian includes terms that corresponds directly to stabilizers for protecting quantum information. In this talk, we demonstrate such a hardware implementation of stabilizers in a superconducting circuit based on concatenation of π-periodic Josephson elements. |
Yebin Liu; Kenneth Dodge; Bradley Cole; Abigail Shearrow; Emma Brann; Matthew Snyder; Andrey Klots; Lev Ioffe; Robert McDermott; B.L.T. Plourde; |
| 26 | Characterizing The Capacitance of Josephson Junctions for Topologically Protected Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This excess capacitance causes a reduction in the junction charging energy below the level required for the π-periodic Josephson elements. We use measurements of the self-resonance steps on the IV curves of dc SQUIDs to characterize this electronic capacitance contribution as a function of critical current density and the superconducting gap. |
Bradley Cole; Yebin Liu; Kenneth Dodge; Abigail Shearrow; Emma Brann; Matthew Snyder; Andrey Klots; Lev Ioffe; Robert McDermott; B.L.T. Plourde; |
| 27 | Toward Implementation of Protected Charge-parity Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we describe the design, fabrication, and characterization of a three-plaquette device. |
Abigail Shearrow; Emma Brann; Matthew Snyder; Kenneth Dodge; Yebin Liu; Bradley Cole; Andrey Klots; Lev Ioffe; Britton Plourde; Robert McDermott; |
| 28 | Measurement of The Soft 0-pi Qubit with Small Junction and Inductive Energies Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present preliminary measurement results of a soft 0-pi qubit with small E J and E L. |
Junyoung An; Agustin Di Paolo; Ilan Rosen; Roni Winik; Leon Ding; Max Hays; Alexander Melville; Bethany Huffman; David Kim; Mollie Schwartz; Terry Orlando; Simon Gustavsson; Jeffrey Grover; Kyle Serniak; William Oliver; |
| 29 | Simple Two Qubit Gates for The 0-π Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show how to connect the nodes of two 0− π circuits in order to achieve any desired coupling between any qubit degrees of freedom. |
Zhenxing Liu; Joshua Combes; |
| 30 | A 0-pi Qubit with In-situ Tunable Protection and Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a way to break the circuit symmetry, the key reason for the protection, to momentarily restore the ability to control and manipulate the qubit without the use of ancillary levels. |
Farid Hassani Bijarbooneh; |
| 31 | Designing Improved Zero-pi Qubits Using Small-area Capacitors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we show that the newly-accessible parameter regime enables a device with increased immunity to decoherence. |
Ilan Rosen; Junyoung An; Agustin Di Paolo; Leon Ding; Max Hays; Thomas Hazard; Kate Azar; Alexander Melville; Bethany Niedzielski; Katrina Silwa; Mollie Schwartz; Jonilyn Yoder; Jeffrey Grover; Kyle Serniak; William Oliver; |
| 32 | Overcoming Barriers: Fast Control of A Qubit with Variable Protection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this way, fast gates can be performed using traditional microwave pulse techniques in the unprotected regime while the qubits enjoy extended relaxation times when idling in the protected regime. To test the performance of such a scheme, we propose a simple T1-protected qubit design, the double-shunted flux qubit (DSFQ), a variation of the capacitively shunted flux qubit, where the level of protection is controlled through a single tunable junction. |
Svend Krøjer; Anders Enevold Dahl; Kasper Sangild Christensen; Morten Kjaergaard; Karsten Flensberg; |
| 33 | Controlling The Protected Soft Zero-pi Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We review possible gate schemes for the zero-pi, emphasizing the challenges of realizing two-tone Raman gates in protected superconducting qubits. |
Anjali Premkumar; András Gyenis; Pranav Mundada; Sara Sussman; Xanthe Croot; Jens Koch; Andrew Houck; |
| 34 | Qubit Readout with A Non-linear Cavity Coupled to A Transmon Qubit Via Direct Cross-Kerr Coupling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will discuss the different operating regimes of our device and present experimental data demonstrating qubit measurement. |
Kishor Salunkhe; Madhavi Chand; Meghan Patankar; Rajamani Vijayaraghavan; |
| 35 | Purcell Protection and Crosstalk Reduction Using Multimode Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, coupling to readout circuits and neighboring qubits can limit qubit performance through Purcell decay and crosstalk. To protect the qubit from these effects, we propose a multimode superconducting circuit composed of three superconducting islands coupled to a central island via Josephson junctions. |
Frederik Pfeiffer; Christian Schweizer; Gerhard Huber; Leon Koch; Niklas Bruckmoser; Stefan Filipp; |
| 36 | Entanglement Purification with Quantum LDPC Codes and Iterative Decoding Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Since probabilistic many-to-1 distillation schemes for purifying entanglement are inefficient, we investigate quantum error correction based entanglement purification in this work. |
Narayanan Rengaswamy; Nithin Raveendran; Ankur Raina; Bane Vasic; |
| 37 | Quantum Two-block Non-abelian Group Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study numerically and analytically a class of quantum two-block CSS codes with generator matrices HX = ( A, B), HZ = ( BT, AT), where commuting square matrices A, B of size m × m are associated with elements of the group algebra F 2G, and G is a group of order m. |
Hsiang Ku Lin; Leonid Pryadko; |
| 38 | Constant-Overhead Quantum Error Correction with Thin Planar Connectivity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will discuss our proposal for a low overhead quantum error correction scheme based on quantum LDPC codes and a few layers of long-range connections. |
Nicolas Delfosse; |
| 39 | Spacetime Topological Defect Networks and Floquet Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I propose an extension of the topological defect network construction from groundstate wave functions to spacetime partition functions as a unifying framework to describe static fracton topological orders and dynamical topological floquet codes. |
Dominic Williamson; |
| 40 | Qutrit-based Topological Subsystem Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a topological subsystem code based on a generalization of Kitaev’s honeycomb model to qutrits. |
Joseph Sullivan; Scott Jensen; Tyler Ellison; |
| 41 | Pauli Topological Subsystem Codes from Abelian Anyon Theories Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work thus extends the classification of two-dimensional Pauli topological subsystem codes to systems of composite-dimensional qudits and shows that the classification is at least as rich as that of two-dimensional Abelian anyon theories. |
Tyler Ellison; Yu-An Chen; Arpit Dua; Wilbur Shirley; Nathanan Tantivasadakarn; Dominic Williamson; |
| 42 | Quantum Error Correction in A Time-dependent Transverse Field Ising Model Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe a simple quantum error correcting code built out of a time-dependent transverse field Ising model. |
Yifan Hong; Jeremy Young; Adam Kaufman; Andrew Lucas; |
| 43 | Homomorphic Logical Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: As an example, we utilize the theory of covering spaces to construct homomorphic measurement protocols for arbitrary X- or Z-type logical Pauli measurements on surface codes in general, including the toric code and hyper- bolic surface codes. |
Shilin Huang; Tomas Jochym-O’Connor; Theodore Yoder; |
| 44 | Hyperbolic Floquet Quantum Error Correcting Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we introduce hyperbolic Floquet codes, where two-qubit check operators are measured in a periodic sequence. |
Ali Fahimniya; Sheryl Mathew; Hossein Dehghani; Kishor Bharti; Alicia Kollar; Alexey Gorshkov; Michael Gullans; |
| 45 | Quantum Perspectives on The Clifford Group Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: When considering the action of some Clifford subgroup this quotient space separates into multiple disconnected subgraphs, which we term restricted graphs. We introduce this definition of reachability graphs as Cayley graph quotient spaces and demonstrate how operator identities on stabilizer states completely describe the identifications that produce restricted graphs. |
William Munizzi; Cynthia Keeler; Jason Pollack; |
| 46 | Multi Spin Clifford Code for Higher Order Angular Momentum Errors in Spin Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we encode a qubit in a collection of systems with angular-momentum symmetry (spins), extending the tools developed in [1] for single large spins. |
Sivaprasad Omanakuttan; Jonathan Gross; |
| 47 | Preparing The XY Surface Code with High Threshold Under Biased Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a new logical initialization protocol which maintains the effectiveness of the XY code against dephasing noise. |
Pei-Kai Tsai; Yue Wu; Shruti Puri; |
| 48 | Reservoir-assisted Energy Migration in Hybrid Quantum Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce an alternate approach; our channels are replaced by collective reservoirs interacting with pairs of nodes. |
Josephine Dias; Christopher Wächtler; Victor Bastidas; Kae Nemoto; William Munro; |
| 49 | Gatemon Qubits with Superconductor-semiconductor-superconductor Junctions: Transition from High Transparency to Low Transparency Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work is based on a self-consistent approach, which focuses on the Andreev-level physics of a semiconductor quantum dot coupled via tunneling to superconducting leads, and we aim to establish a rigorous physical correspondence with conventional Josephson junction physics at low transparency. |
Utkan Güngördü; Andrew Kerman; Kyle Serniak; Silas Hoffman; Rusko Ruskov; Charles Tahan; |
| 50 | A Parametric Coupling Scheme for Mitigating Piezoelectric Loss in Quantum Acoustics Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This results in superconducting qubit lifetimes around two orders of magnitude smaller than those on the best dielectrics. Here we present a 3D cavity architecture to mitigate the deleterious effect of this extra loss by removing the qubit entirely from the piezoelectric substrate and instead parametrically coupling the qubit to the acoustic modes utilizing a 3D superconducting nonlinear asymmetric inductive element (SNAIL). |
Brendon Rose; Cyril Metzger; Pablo Aramburu Sanchez; Alec Emser; Konrad Lehnert; |
| 51 | Epitaxially-grown Barium-Titanate-Silicon Heterostructures for Piezo-acoustic Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a path for on-chip integration of piezoelectric thin films via heteroepitaxy of barium titanate (BTO) on Si substrates. |
Deepak Sapkota; Margaret Marte; Kathryn Evancho; Christopher Rouleau; Jong Keum; Kasra Sardashti; |
| 52 | Surface-magnon Mediated Self-interaction of Nitrogen-vacancy Centers in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Hybrid quantum systems consisting of nitrogen-vacancy (NV) centers in diamond and magnons in ferrimagnets have recently attracted much attention as a platform for on-chip long-distance entanglement, interfacing quantum information science with magnonics [1,2]. Here, we experimentally determine the magnon-induced self-interaction of this hybrid system by combining longitudinal (T_1) relaxometry measurements with the fluctuation-dissipation and Kramers-Kronig relations. |
Masaya Fukami; Jonathan Marcks; Benjamin Soloway; Denis Candido; Leah Weiss; Sean Sullivan; Nazar Delegan; F. Joseph Heremans; Michael Flatté; David Awschalom; |
| 53 | AlN-on-Diamond FBAR for Coherent Acoustic Control of NV Centers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we demonstrate surface micromachining of diamond integrated with AlN transducers to realize thin film bulk acoustic wave resonators (FBARs) that are free standing mechanical resonators for enhanced phonon mode confinement. |
Ozan Erturk; Noah Opondo; Johnathan Kuan; Anthony D’Addario; Brendan McCullian; Gregory Fuchs; Sunil Bhave; |
| 54 | Development of Fresnel-type Solid Immersion Lens and Bulk Acoustic Resonators for Spin-mechanical Hybrid System in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we demonstrate a method for milling fresnel lens using focused ion beam, which can enhance process yield by reducing milling time (1/3 compared to hemispherical structure) while retaining high photon collection efficiency (>2 compared to flat surface). |
SungJoon Park; |
| 55 | Quantum Spin Squeezing in A Squeezed Environment Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We apply the stochastic Schrödinger equation approach to study the non-Markovian dynamics of open quantum systems when coupled to the environment that is initially prepared in a squeezed state. |
Yusui Chen; |
| 56 | Itinerant Phonons As Carriers of Quantum Information Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will describe our work in coupling superconducting qubits to propagating SAWs. |
Audrey Bienfait; |
| 57 | Laser Cooling of Nuclear Magnons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this Letter, we propose an opto-nuclear quadrupolar effect, whereby two-color optical photons can efficiently interact with nuclear spins. |
Haowei Xu; |
| 58 | Deterministic Construction of Arbitrary States in Permutationally-Invariant Spin Ensemble Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To achieve the quantum advantages of these applications, specific states are required to be prepared, but a systematic way to prepare arbitrary spin-ensemble state is missing in the literature. In this work, we propose a scheme to fill this gap. |
Ruchir Tullu; Kero Lau; Himadri Shekhar Dhar; |
| 59 | Universal Adaptive Gaussian Quantum Operations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a scheme based on a randomly given immutable hybrid Gaussian unitary operation and single-mode quantum operations and classical controls. |
Mengzhen Zhang; Liang Jiang; |
| 60 | Fundamental Limits to Quantum Metrology with Noncommuting Generators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we explore how the missing factor can be restored and the sensitivity improved. |
James Gardner; Tuvia Gefen; Yanbei Chen; |
| 61 | Quantum Metrology Beyond The Asymptotic Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we consider the fundamental limits on estimation when only a finite number of copies of the state are available. |
Sumeet Khatri; Johannes Meyer; Jens Eisert; Philippe Faist; Daniel França; |
| 62 | Achieving Heisenberg-limited Sensitivity with Scrambling Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: It is often assumed that achieving beyond-classical sensitivities requires preparing finely tuned entangled states, such as the GHZ state or a spin-squeezed state. Here, we demonstrate instead that the fundamental limit on quantum sensing — the celebrated Heisenberg limit — can be achieved with a much broader class of entangled states, and we introduce an explicit protocol for preparing such states and reading out an accumulated phase. |
Bryce Kobrin; Thomas Schuster; Brad Mitchell; Maxwell Block; Norman Yao; |
| 63 | Inference-based Quantum Sensing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we present an inference-based scheme for QS. |
Cinthia Huerta Alderete; Max Hunter Gordon; Frédéric Sauvage; Akira Sone; Andrew Sornborger; Patrick Coles; Marco Cerezo; |
| 64 | Quantum Advantage in Continuous Variable Sensing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Yet, a general theory on how to manipulate such bosonic modes for sensing is unknown. We present such a framework for algorithmic quantum sensing at the fundamental limits of quantum mechanics, i.e. the Heisenberg sensing limit. |
Jasmine Sinanan-Singh; Yuan Liu; Gabriel Mintzer; Isaac Chuang; |
| 65 | Quantum Enhancement in Magnetic Field Precision in Partially Accessible Quantum Many-body Systems By A Periodic Driving Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate that for partial accessibility, the data gathered by measuring a block of spins in the ground state reduces the sensing capability to the sub-Heisenberg limit. To compensate for this, we propose a driving protocol consisting of measurement on local steady-state for quantum sensing. |
Utkarsh Mishra; Abolfazl Bayat; |
| 66 | Optimal Time for Sensing in Open Quantum Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the time-dependent quantum Fisher Information (QFI) in a simple open quantum system satisfying the Gorini-Kossakowski-Sudarshan-Lindblad master equation and demonstrate that the conventional definition of the QFI can fail to correlate with the system dynamics. |
zain Saleem; Anil Shaji; Stephen Gray; |
| 67 | Post-selected Quantum Metrology in Noisy Settings Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The extent of the possible information compression depends on the strength of the noise. I present analytical formulae pinning down this relation. |
Flavio Salvati; David Arvidsson-Shukur; Crispin Barnes; Joe Jenne; |
| 68 | Tensor Network Simulations of Variational Bayesian Quantum Metrology Under Correlated Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Variational Bayesian metrology has emerged as a promising avenue toward quantum advantage in sensing in the presence of complex noise and prior information. For the sake of … |
Tyler Thurtell; Akimasa Miyake; |
| 69 | Preprocessing Quantum States for Noisy Measurements in Quantum Metrology Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we study the metrological protocol where quantum states can be preprocessed using quantum controls before noisy measurements. |
Sisi Zhou; Tuvia Gefen; |
| 70 | A Path to Combining Squeezing and Quantum Non-demolition Techniques to Improve The Prospects for The Gravitational Direct Detection of Dark Matter Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Techniques to go beyond this limit include both squeezing of the light used for measurement and incorporating backaction evading measurement by estimating quantum non-demolition operators — typically the momentum of a mechanical resonator well above its resonance frequency. Here we explore the theoretical limits to noise reduction while combining these two quantum enhanced readout techniques for these optomechanical sensors. |
Sohitri Ghosh; Matthew Feldman; Seongjin Hong; Claire Marvinney; Raphael Pooser; Jacob Taylor; |
| 71 | Fast Iterative, Adaptive Frequency Sensing Scheme of A Two-level System (theory) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we propose an iterative, adaptive sensing protocol based on Ramsey interferometry of a two-level system. |
Avishek Chowdhury; |
| 72 | Fast Iterative, Adaptive Frequency Sensing Scheme of A Two-level System (experiment) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, we perform the IAS protocol for short signals. |
Anh Tuan Le; |
| 73 | An Approach to Direct Velocity Estimation Using Magnetomechanics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose and characterize a theoretical model for direct velocity measurement that utilizes a magnetic-based approach. |
Brittany Richman; Sohitri Ghosh; Daniel Carney; Christopher Lobb; Jacob Taylor; |
| 74 | Resonant Tunneling Enhanced Weak Value Amplification for Solid-state Quantum Metrology Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantum metrology employing weak-value amplification can effectuate parameter estimation with an ultra-high sensitivity and has been typically experimented across quantum optics setups. Modifying an ealier proposal for the spintronic Larmor clock [1], we propose an experiemntally viable solid-state spintronic platform to realize this paradigm. |
Bhaskaran Muralidharan; Amal Mathew; Mahadevan Subramanian; |
| 75 | Designing Dynamically Corrected Gates Robust to Multiple Noise Sources Using Geometric Space Curves: Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we augment the SCQC framework by deriving the global geometric conditions for pulse error tolerance, completing the picture of noise-robust single qubit control under SCQC. |
Evangelos Piliouras; Hunter Nelson; Kyle Connelly; Sophia Economou; Edwin Barnes; |
| 76 | Designing Dynamically Corrected Gates Robust to Multiple Noise Sources Using Geometric Space Curves: Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present a general technique to design control pulses that simultaneously suppress noise in both qubit energy levels and control fields. |
Hunter Nelson; Evangelos Piliouras; Kyle Connelly; Sophia Economou; Edwin Barnes; |
| 77 | Fast and Robust Geometric Two-Qubit Gates for Superconducting Qubits and Beyond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While adiabatic protocols have been successfully implemented for quantum operations such as quantum state transfer and single-qubit gates, their use for geometric two-qubit gates remains a challenge. In this talk, I will present a general scheme to realize robust geometric two-qubit gates in multi-level qubit systems where the interaction between the qubits is mediated by an auxiliary system (such as a bus or coupler). |
Fnu Setiawan; Peter Groszkowski; Aashish Clerk; |
| 78 | Robust Quantum Control: Analysis & Synthesis Via Averaging — Part 1: Algorithm Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we utilize the classical method of averaging to realize an approach for robustness analysis and synthesis of controls for quantum logic gates. |
Robert Kosut; Gaurav Bhole; Benjamin Lienhard; Herschel Rabitz; |
| 79 | Robust Quantum Control: Analysis & Synthesis Via Averaging — Part 2: Experiment Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose an approach to design robust quantum operations via a two-stage algorithm. |
Gaurav Bhole; Robert Kosut; Benjamin Lienhard; Herschel Rabitz; |
| 80 | Considerations of The Robustness of A Control Solution and Its Application in An Experimental Scenario Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report general theoretical considerations concerning the robustness of a quantum optimal control solution. |
Marco Rossignolo; |
| 81 | Opportunities and Challenges in Learning How to Control High Dimensional Quantum Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will consider a more general picture where controls are simply given by tunable parameters that enter in the system evolution. |
Christian Arenz; |
| 82 | Universally Robust Control Sequences for High-dimensional Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: It is necessary for these high-dimensional qudits to hold long coherence times in both relaxation and dephasing pathways so that the transmon logic gates can be implemented with high fidelity. In an effort to suppress decoherence in these qudits, here we demonstrate robust dynamical decoupling (DD) using precise pulse sequences to mediate systematic errors and dephasing that occur in the evolution of these higher-order qudits. |
Madeline Taylor; Kangdi Yu; Murat Sarihan; Jin Ho Kang; Ananyo Banerjee; Cody Fan; Daniel Lidar; Chee Wei Wong; |
| 83 | Pulse-level Control and Dynamics of Qudit Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Application of the pulses of each module in the presence of extra modes may decrease their effectiveness due to crosstalk. We address this problem by simulating qudit dynamics for circuit quantum electrodynamics (cQED) systems. |
A. Baris Ozguler; Joshua Job; |
| 84 | Realizing High-fidelity Qudit Gates on A Transmon Via Optimal Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our findings motivate further research in higher-radix quantum computing architectures and tailored compiler design. |
Lennart Maximilian Seifert; Ziqian Li; Jason Chadwick; Tanay Roy; Andrew Litteken; Jonathan Baker; David Schuster; Frederic Chong; |
| 85 | Simulating Neutrino Oscillations with A Transmon Qutrit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: As an illustration, we present a qutrit-based quantum simulation of three-flavor neutrino oscillations on a Rigetti cloud-access processor. |
Vinh San Dinh; Jens Koch; Matthew Reagor; Silvia Zorzetti; Alexander Romanenko; Joshua Job; |
| 86 | Direct Pulse Level Compilation of Arbitrary Quantum Logic Gates on Superconducting Qutrits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will present experimental results for pulse-level compilation of randomly generated unitaries implemented with optimal control on superconducting qutrits. |
Yujin Cho; Kristin Beck; Alessandro Castelli; Kyle Wendt; Bram Evert; Matthew Reagor; Jonathan DuBois; |
| 87 | Radio Frequency Reflectometry with Impedance Matching on Si:P Monolayer Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This presentation will discuss our progress in developing reflectometry that is capable of single shot-readout. |
Joseph Fox; Fan Fei; Ranjit Kashid; Pradeep Namboodiri; Jonathan Wyrick; Joshua Pomeroy; Richard Silver; Neil Zimmerman; |
| 88 | Hyperabrupt SrTiO3 Varactors for High-Sensitivity Reflectometry of Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report on the characterization of Strontium Titanate (STO) ring-varactors which robustly reach hyperabrupt capacitance tunability. |
Rafael Eggli; Taras Patlatiuk; Simon Svab; Dominique Trüssel; Simon Geyer; Miguel Carballido; Erik P. A. M. Bakkers; Richard Warburton; Andreas Kuhlmann; Dominik Zumbuhl; |
| 89 | Design and Optimization of A Cryogenic CMOS Capacitance Bridge for Readout of Silicon Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present results demonstrating the operation of a CMOS capacitance bridge suitable for readout of silicon spin qubits. |
Ryan Foote; Ioanna Kriekouki; Claude Rohrbacher; Alexandre Bédard-Vallée; Philippe Galy; Dan Deptuck; Gayathri Singh; Nicolas Roy; Michel Pioro-Ladrière; Jean-François Pratte; |
| 90 | Broadband Parametric Amplification for Multiplexed SiMOS Spin Qubit Readout Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate a 3GHz gate-based reflectometry readout of electron charge states in SiMOS multi-gate devices, enhanced with a travelling-wave superconducting parametric amplifier (TWPA) [4]. |
Victor Elhomsy; David Niegemann; Luca Planat; Emmanuel Chanrion; Martin Nurizzo; Baptiste Jadot; Vivien Thiney; Renan Lethiecq; Bernhard Klemt; Matthieu Dartiailh; Pierre Mortemousque; Benoit Bertrand; Heimanu Niebojewski; Maud Vinet; Nicolas Roch; Tristan Meunier; Matias Urdampilleta; |
| 91 | Dispersive Charge Sensing of Quantum Dots in Ge/Si Core/shell Nanowires Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present fast, gate-dispersive charge sensing measurements in a Ge/Si nanowire device with a tank circuit situated on the sample PCB. |
Simon Svab; Miguel Carballido; Rafael Eggli; Pierre Chevalier Kwon; Erik P. A. M. Bakkers; Taras Patlatiuk; Dominik Zumbuhl; |
| 92 | Coherent Manipulation of The Si/SiGe Quantum Dot Hybrid Qubit Using Single-shot Latched Readout Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present single-shot measurements and demonstrate coherent Larmor oscillations of a quantum dot hybrid qubit. |
Sanghyeok Park; Jared Benson; Joelle Corrigan; John Dodson; Sue Coppersmith; Mark Friesen; Mark Eriksson; |
| 93 | The Effect of Device Drift on Elzerman Readout Fidelity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a method for calculating the charge sensor operating voltage as a function of elapsed time from a simple noise measurement, which allows us to deduce the reduction in readout fidelity in the absence of retuning. |
Tommy Boykin II; Michael Stewart; |
| 94 | Quantum Computation By Spin Parity Measurments with Encoded Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Both theoretical exact spin-parity measurements and previously experimentally demonstrated inexact spin-parity measurements are shown to useful for implementing the proposed measurement based scheme. This new method of spin qubit control offers a leakage-free, low resource overhead implementation of measurement-based control that is viable on current spin qubit [1] "Hybrid Exchange–Measurement-Based Qubit Operations in Semiconductor Double-Quantum-Dot Qubits”, Matthew Brooks and Charles Tahan, Phys. |
Matthew Brooks; Charles Tahan; |
| 95 | Non-reciprocal Pauli Spin Blockade in A Silicon Double Quantum Dot Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present an experimental observation of a new, highly prevalent PSB-lifting mechanism in a silicon double quantum dot due to incoherent tunnelling between different spin manifolds. |
David Ibberson; Theodor Lundberg; Jing Li; Louis Hutin; Jose Carlos Abadillo-Uriel; Michele Filippone; Benoit Bertrand; Andreas Nunnenkamp; Chang-Min Lee; Nadia Stelmashenko; Jason Robinson; Maud Vinet; Lisa Ibberson; Yann-Michel Niquet; Fernando Gonzalez-Zalba; |
| 96 | Probing Spin-orbit Induced Leakage Mechanisms Via Electric Dipole Spin-resonance Within Pauli Spin-blockade Towards Efficient Hole Spin Qubit Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we investigate the magnetic-field induced leakage current and g-factor dependence via EDSR of a hole double-QD MOS device within the weakly coupled (tunnel coupling ~ 1 µeV) Pauli-spin-blockade regime. |
Joseph Hillier; Ik Kyeong Jin; Scott Liles; Aaquib Shamim; Isaac Vorreiter; Roy Li; Clement Godfrin; Stefan Kubicek; Kristiaan DeGreve; Alex Hamilton; |
| 97 | Developing A Valley-Spin Readout Method in Bilayer WSe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we discuss the design of bilayer WSe 2 quantum dot devices that seek to take advantage of a novel valley-spin/charge conversion mechanism to determine valley-spin lifetimes in a dispersive readout scheme. |
Michael Mastalish; |
| 98 | Trapping Single Photo-carriers in Undoped Single-gated Quantum Dots Using An On-chip Microwave Resonator for Charge Readout Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Scaling up gate-defined quantum dot systems is hampered by the rapid growth in the number of control gates. To tackle this challenge, we propose a novel scheme, in which the quantum dots are created from optically generated charges trapped beneath accumulation gates. |
Pierre Lefloic; Zhiren Wang; Alicia Kam; Louis Gaudreau; Michel Pioro-Ladrière; |
| 99 | Measuring A Quantum Expectation Value of A Single Qubit Without Collapse Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In contrast to this view, Aharonov et al. [1] have proposed a scheme which, under certain conditions, allows one to measure the expectation values of arbitrary observables of a single state without collapsing the wave function. We present the experimental realization of such a protective measurement using a superconducting qubit platform. |
Jacob Hastrup; Morten Kjaergaard; |
| 100 | Non-local Heat Harvesting, Refrigeration and Thermometry Based on Triple Quantum Dot Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, I discuss a realistic design for non-local heat engine, refrigeration engine and thermometer based on triple quantum dot set-up, that circumvents the necessity for any change in the system-to-reservoir coupling, demanded by the optimal dual dot setups. |
Aniket Singha; Suraj Dhongade; Afreen Haque; Anamika Barman; |
| 101 | Predicting Properties of Quantum Systems with Conditional Generative Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we combine the benefits of both approaches and propose the use of conditional generative models to simultaneously represent a family of states, by learning shared structures of different quantum states from measurements. |
Haoxiang Wang; Maurice Weber; Josh Izzac; Cedric Lin; |
| 102 | Fast Quantum-Assisted Sampling As A Potential Source of Quantum Advantage at Training Generative Models with Latent Variables Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In particular, we introduce a non-conventional annealing protocol so-called Random Frequency Quantum Annealing (RFQA) [1] , a promising candidate to offer noise tolerant speed ups for optimization and sampling tasks. |
Carla Quispe Flores; |
| 103 | Qubit Seriation: Undoing Data Shuffling Using Spectral Ordering Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we use methods from spectral graph theory to search for optimal permutations of model sites that are adapted to the structure of an input dataset. |
Atithi Acharya; Manuel Rudolph; Jing Chen; Jacob Miller; Alejandro Perdomo-Ortiz; |
| 104 | Towards A Scalable Discrete Quantum Generative Adversarial Neural Network Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a fully quantum generative adversarial network intended for use with binary data. |
Alexey Galda; Smit Chaudhary; Patrick Huembeli; Ian MacCormack; Jean Kossaifi; Taylor Patty; |
| 105 | Enhancing Optimization Techniques with Quantum-Inspired Generative Models (Part 1) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantum-inspired optimizers based on tensor networks can find unique optimization routes that may solve these problems faster than traditional approaches. In this work, we utilize such a quantum-inspired optimizer to enhance traditional optimization methods and analyze performance on a BMW plant optimization problem. |
William Banner; Shima Bab Hadiashar; Grzegorz Mazur; Tim Menke; Marcin Ziolkowski; Jeffrey Grover; Jhonathan Romero; William Oliver; |
| 106 | Enhancing Optimization Techniques with Quantum-Inspired Generative Models (Part 2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we identify a method of data encoding and search space reduction in a BMW plant optimization problem. |
Shima Bab Hadiashar; William Banner; Grzegorz Mazur; Tim Menke; Marcin Ziolkowski; Jeffrey Grover; Jhonathan Romero; William Oliver; |
| 107 | Generative Learning with Quantum Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Generative machine learning (ML) tasks are prominent across a wide range of industries, and are difficult to tackle even with some of the best classical ML approaches that we have available. By introducing quantum models for these tasks, we have already seen promising results for quantum advantage with respect to the model’s expressibility, trainability, and most recently, generalization performance. |
Kaitlin Gili; |
| 108 | Benchmarking The Generalization of Quantum-Inspired and Classical Generative Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our goal with this study is to provide insight into instances where different classes of generative models, including the tensor networks, perform well, thus advancing on the path towards practical quantum-inspired and quantum advantage. |
Brian Chen; Mohamed Hibat-Allah; Javier Lopez-Piqueres; Marta Mauri; Daniel Varoli; Francisco Fernandez Alcazar; Brian Dellabetta; Alejandro Perdomo-Ortiz; |
| 109 | Symmetric Tensor Networks for Constrained Combinatorial Optimization and Generative Modeling (Part I) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In some heuristic solvers, these are typically addressed by introducing certain Lagrange multipliers in the cost function, by relaxing them in some way, or worse yet, by generating many samples and only to keep valid ones, which leads to very expensive and inefficient searches. In this work, we encode these constraints directly into symmetric tensor networks (TNs) and leverage their applicability as quantum-inspired generative models to assist in the search of solutions to combinatorial optimization problems This allows us to exploit the generalization capabilities of TN generative models while constraining them so that they only output feasible samples. |
Javier Lopez-Piqueres; Jing Chen; Alejandro Perdomo-Ortiz; |
| 110 | Symmetric Tensor Networks for Constrained Combinatorial Optimization and Generative Modeling (Part II) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In some heuristic solvers, these are typically addressed by introducing certain Lagrange multipliers in the cost function, by relaxing them in some way, or worse yet, by generating many samples and only to keep valid ones, which leads to very expensive and inefficient searches. In this work, we encode these constraints directly into symmetric Tensor Networks (TNs) and leverage their applicability as quantum-inspired generative models to assist in the search of solutions to combinatorial optimization problems This allows us to exploit the generalization capabilities of TN generative models while constraining them so that they only output feasible samples In part I, we discuss how to incorporate these constraints directly into TN probabilistic models and how to train them so as to only generate valid samples[JC1] . |
Jing Chen; Javier Lopez-Piqueres; Alejandro Perdomo-Ortiz; |
| 111 | Hamiltonian Quantum Generative Adversarial Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose Hamiltonian Quantum Generative Adversarial Networks (HQuGANs), to learn to generate unknown input quantum states using two competing quantum optimal controls. |
Leeseok Kim; Seth Lloyd; Milad Marvian; |
| 112 | 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; |
| 113 | Generative Learning of Continuous Data By Tensor Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While possessing many desirable features arising from their quantum-inspired nature, tensor network generative models have previously been restricted to binary or categorical data, limiting their usefulness in real-world modeling tasks. We overcome this by introducing a new family of tensor network generative models for continuous data, which are capable of learning from distributions containing continuous random variables. |
Alexander Meiburg; Jacob Miller; Jing Chen; Alejandro Perdomo-Ortiz; |
| 114 | Module Development of Si Quantum Technology for A Practical Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will briefly introduce our strategy and show preliminary results at National Taiwan University (NTU) and Taiwan Semiconductor Research Institute (TSRI), Taiwan. |
Jiun-Yun Li; |
| 115 | Measurements of Superconducting Qubits Containing Through-silicon Vias Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we demonstrate compact TSV-enabled lumped-element resonators that provides vertical readout integration at a pitch smaller than that of a standard transmon qubit. |
Thomas Hazard; Wayne Woods; Rabindra Das; David Kim; Jeffrey Knecht; Justin Mallek; Bethany Niedzielski; Donna-Ruth Yost; William Oliver; Jonilyn Yoder; Mollie Schwartz; |
| 116 | Qubit Fabrication in Advanced Semiconductor Manufacturing Facilities: The Good, The Bad, and The Ugly* Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present recent results on improvements over the state-of-the art in interface and materials control in both superconducting and silicon spin qubit platforms: best-in-class quality factors of superconducting resonators [1], ultra-low charge noise in MOS spin qubits, and initial results in reduced variability for superconducting qubits [2]. |
Kristiaan De Greve; Danny Wan; Massimo Mongillo; Yann Carvel; Clement Godfrin; Tsvetan Ivanov; Julien Jussot; Stefan Kubicek; Roy Li; Shana Massar; Daniel Perez Lozano; Antoine Pacco; Anton Potocnik; A. M. Vadiraj; George Simion; Alexander Grill; |
| 117 | A 3-tier Stack for 3D Integration of Superconducting Quantum Systems – Part 1: Interposer Tier with Superconducting TSVs and Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have developed a 3D integration approach that utilizes a 3-tier stack to provide access to multi-level superconducting circuitry. |
Donna-Ruth Yost; Cyrus Hirjibehedin; Justin Mallek; Danna Rosenberg; Rabindra Das; Kate Azar; Katrina Silwa; Thomas Hazard; Vladimir Bolkhovsky; Evan Golden; David Kim; Jeffrey Knecht; Alexander Melville; Bethany Niedzielski; Meghan Schuldt; Ravi Rastogi; Kyle Serniak; Steven Weber; Wayne Woods; Scott Zarr; Andrew Kerman; William Oliver; Mollie Schwartz; Jonilyn Yoder; |
| 118 | A 3-tier Stack for 3D Integration of Superconducting Quantum Systems – Part 2: Qubit Design and Performance Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe the design and operation of high-coherence superconducting qubits in a 3D-integrated 3-tier stack that utilizes an interposer with superconducting through-silicon vias (TSVs) to connect qubits to multi-level superconducting routing while preserving qubit performance by isolating qubits from lossy dielectrics in the routing tier. |
Cyrus Hirjibehedin; Donna-Ruth Yost; Justin Mallek; Danna Rosenberg; Rabindra Das; Kate Azar; Katrina Sliwa; Thomas Hazard; Vladimir Bolkhovsky; Evan Golden; David Kim; Jeffrey Knecht; Alexander Melville; Bethany Niedzielski; Meghan Schuldt; Ravi Rastogi; Kyle Serniak; Steven Weber; Wayne Woods; Scott Zarr; Andrew Kerman; William Oliver; Mollie Schwartz; Jonilyn Yoder; |
| 119 | Flip-Chip Packaging of Fluxonium Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we report novel work on fluxoniums embedded in a multi-chip module (MCM), implementing a 2.5D architecture, where a classical control and readout chip is bump-bonded to the quantum chip. |
Aaron Somoroff; Patrick Truitt; Adam Weis; Konstantin Kalashnikov; Jacob Bernhardt; Igor Vernik; Ray Mencia; Oleg Mukhanov; Maxim Vavilov; Vladimir Manucharyan; |
| 120 | Microwave Multi-planar Package Design for Superconducting Qudit Chips with Integrated Support Elements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we focus on the development of a microwave package from material and geometric choices to designing the resonant cavity and multi-layer interposer to provide an accommodating environment for planar qudit circuits – with high-fidelity control and readout signals while suppressing chip, cavity and interposer-based noisy modes up to 10 GHz while also reducing inter-channel crosstalk in the package. |
Ananyo Banerjee; Murat Sarihan; Jin Ho Kang; Kangdi Yu; Madeline Taylor; Cody Fan; Chee Wei Wong; |
| 121 | Indium Electroplating for Scalable Integration of Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report high qubit coherence made with flip-chip bonded electroplated indium bumps. |
Máté Jenei; Hasnain Ahmad; Mario Palma; Lan-Hsuan Lee; Wei Liu; Chun Fai Chan; Jakub Mrozek; Alpo Välimaa; Francesca Tosco; Janne Kotilahti; Alessandro Landra; Pavel Smirnov; Tianyi Li; Johannes Heinsoo; Caspar Ockeloen-Korppi; Juha Hassel; Kuan Tan; |
| 122 | CMOS On-chip Thermometry at Deep-Cryogenic Temperatures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a measurement-based comparison of sensitivity and other metrics for a variety of on-chip temperature-sensing methods in a standard SOI process. |
M Fernando Gonzalez-Zalba; Grayson Noah; Thomas Swift; Mathieu de Kruijf; Alberto Gomez Saiz; M Fernando Gonzalez-Zalba; John Morton; |
| 123 | Circle Fit Optimization for Resonator Quality Factor Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, such circle fits can produce varied results [6]. To address this issue, we have used a combination of simulation and experiment to determine the reliability of the fitting algorithm of Probst et al. across a wide range of quality factor values from Q ici depends on the ratio Q i/Q c, Q i fits can still be accurate and reliable when noise levels are low and the number of data points remains large. |
Paul Baity; Connor Maclean; Valentino Seferai; Joe Bronstein; Tania Hemakumara; Yi Shu; Harm Knoops; Russ Renzas; Martin Weides; |
| 124 | Characterisation of A Modular 3D-integrated Superconducting Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present experimental results on an eight-qubit superconducting circuit comprised of fixed-frequency transmon qubits fabricated on two separate substrates and coupled together in a 1D ring topology. |
Giulio Campanaro; Shuxiang Cao; Simone Fasciati; James Wills; Mustafa Bakr; Vivek Chidambaram; Boris Shteynas; Peter Leek; |
| 125 | Microwave Spectroscopy of Closed-loop Superconducting Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The range of accessible physics can be expanded by considering closed-loop resonator geometries with potential applications ranging from the uniform coupling of scalable qubit networks to probes sensitive to chiral materials. Here, we report on characterization of lithographically defined superconducting ring resonators and present the initial microwave spectroscopy results showing the rich phenomenology of these geometries. |
Marie Wesson; Saulius Vaitiekenas; Nicholas Poniatowski; Uri Vool; Charlotte Bøttcher; Zihan Yan; Amir Yacoby; |
| 126 | Gradiometric Quarton for Nonlinear Coupling of Superconducting Qubits and Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a device containing two transmon qubits coupled by a gradiometric quarton coupler. |
Kevin O’Brien; |
| 127 | Properties of Superconducting Circuits Based on Josephson Junction Arrays Beyond The Single-mode Approximation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discuss the range of validity and eventual breakdown of the one-mode model as the number of junctions and their parameters are varied. |
Ian Mondragon-Shem; Aditya Gandotra; Andrew Houck; Jens Koch; |
| 128 | Suspended Superinductors for Novel Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present state-of-the-art design and fabrication techniques to realize superinducting circuit elements based on suspended Josephson junction arrays and analyze their performance. |
Christian Juenger; Trevor Chistolini; Long Nguyen; Larry Chen; Hyunseong Kim; David Santiago; Irfan Siddiqi; |
| 129 | Noise Characterization of Suspended Josephson Junction Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: One of the most popular methods to realize such superinductors is an array of Josephson junctions, where their quality will impact the qubit’s coherence. In this work, we investigate noise and instabilities affecting these arrays, such as arising from phase slips or nonequilibrium quasiparticles, where the arrays are either situated on a silicon substrate or suspended in vacuum above the substrate. |
Trevor Chistolini; Christian Juenger; Long Nguyen; Larry Chen; Hyunseong Kim; David Santiago; Irfan Siddiqi; |
| 130 | The Inductively Shunted Transmon: A Simple Building Block for Multi-species Qubit Lattices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By coupling it directly to a transmon, we show built-in ZZ suppression thanks to the positive sign of the IST anharmonicity. |
Simone Fasciati; Boris Shteynas; Giulio Campanaro; Mustafa Bakr; James Wills; Shuxiang Cao; Vivek Chidambaram; Peter Leek; |
| 131 | Fluxonium Qubit Limited By A Collection of Two-level Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The egnine consists of a granular aluminum fluxonium qubit [2] coupled on one side to the TLS environment and on the other side to a real-time measurement and control apparatus. We show that the TLSs and the qubit are each other’s dominant loss mechanism, therefore their understanding and mitigation is not only crucial to improve qubit lifetimes but also to avoid non-Markovian qubit dynamics. |
Martin Spiecker; Patrick Paluch; Niv Drucker; Shlomi Matityahu; Daria Gusenkova; Francesco Valenti; Patrick Winkel; Dennis Rieger; Nicolas Gosling; Simon Günzler; Ivan Takmakov; Richard Gebauer; Oliver Sander; Gianluigi Catelani; Alexander Shnirman; Alexey Ustinov; Wolfgang Wernsdorfer; Yonatan Cohen; Ioan Pop; |
| 132 | Spectroscopy of A Hidden Two-level System Environment Using A Fluxonium Qubit with Fast-flux Tunability Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In order to mitigate this dominant relaxation channel for the qubit, it is essential to gain a better understanding of its origin. Here we present a method to perform spectrocopy of this hidden environment using a similar grAl fluxonium qubit placed in a coplanar waveguide architecture with an integrated fast-flux coil. |
Patrick Paluch; Martin Spiecker; Nicolas Gosling; Dennis Rieger; Simon Günzler; Wolfgang Wernsdorfer; Ioan Pop; |
| 133 | Tunable Coupler for Mediating Interactions Between A Two-level System and A Waveguide from A Decoupled State to The Ultra-strong Coupling Regime: Part I Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In part I, we introduce the tunable coupler design and discuss the characterization of the device including the coupling strength α. |
Noah Janzen; Xi Dai; Shaun Ren; Jiahao Shi; Adrian Lupascu; |
| 134 | Tunable Coupler for Mediating Interactions Between A Two-level System and A Waveguide from A Decoupled State to The Ultra-strong Coupling Regime: Part II Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce and experimentally demonstrate a tunable coupler between a TLS, implemented using a flux qubit, and the electromagnetic fields in a superconducting waveguide. |
Xi Dai; Noah Janzen; Shaun Ren; Jiahao Shi; Adrian Lupascu; |
| 135 | Nanowire-based RF-SQUID Quantum Memory Device Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we use a high-kinetic inductance material that has shown excellent performance in single-photon detectors to construct a nonlinear constriction or weak-link type element in a 3D RF-SQUID resonator. |
Sarah Jones; Trevyn Larson; Heli Vora; Varun Verma; Katarina Cicak; Jose Aumentado; Sae Woo Nam; Jens Koch; Raymond Simmonds; András Gyenis; |
| 136 | High Coherence 2D Kerr-cat Qubit: Experimental Realization and Technical Challenges Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present our experimental progress toward realizing large cat states with high coherence in 2D architectures paving the way for scalable multi-qubit operations. |
AHMED HAJR; Gerwin Koolstra; Bingcheng Qing; Long Nguyen; Christian Jünger; Larry Chen; Zahra Pedramrazi; Shruti Puri; Justin Dressel; Andrew Jordan; David Santiago; Irfan Siddiqi; Nicholas Frattini; |
| 137 | Two-mode Qubit Design Inspired By The GKP Hamiltonian Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we derive an effective two-mode circuit that shares a similar eigenspectrum at low energies and is based on a recently proposed charge-phase interaction [6]. |
Catherine Leroux; Ross Shillito; Charles Marcus; Morten Kjaergaard; András Gyenis; Alexandre Blais; |
| 138 | Correlated Parametric Oscillations of Capacitively-coupled Josephson Parametric Oscillators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study simultaneous parametric oscillations in a system composed of two distributed-element-circuit Josephson parametric oscillators in the single-photon Kerr regime coupled via a static capacitance. |
Tomohiro Yamaji; Shumpei Masuda; Aiko Yamaguchi; Tetsuro Satoh; Ayuka Morioka; Yuichi Igarashi; Masayuki Shirane; Tsuyoshi Yamamoto; |
| 139 | Error Mitigation for Fermionic Simulation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here I will present our work on an error mitigation strategy practically useful for fermionic systems. |
Stasja Stanisic; |
| 140 | Extracting Coherent and Decoherent Qubit Errors Using Folded Cycles and K-body Noise Reconstruction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper we rigorously develop a new efficient and scalable protocol that can separately compute both the coherent and decoherent contributions to the total infidelity of any Clifford operation of interest. |
Patrick Dreher; Arnaud Carignan-Dugas; Shashank Ranu; |
| 141 | Applying NOX Error Mitigation Protocols to Calculate Real-time Quantum Field Theory Scattering Phase Shifts Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Randomized compilation can transform these unitary errors into stochastic ones. This letter reports on a method that estimates the stochastic errors and then uses this information to implement a new scalable Noiseless Output Extrapolation (NOX) error mitigation strategy that will permit the calculation of a phase shift from a scattering event in the Transverse Ising model with calculable error bars. |
Zachary Parks; Arnaud Carignan-Dugas; Erik Gustafson; Yannick Meurice; Patrick Dreher; |
| 142 | Control and Mitigation of Coherent Errors with Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we would like to analyze the coherent error effects to the single-qubit gate and propose an error mitigation scheme. |
Ruixia Wang; |
| 143 | Noise Spectroscopy Without Dynamical Decoupling Pulses Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will introduce a noise spectroscopy method that utilizes only the Fourier transform of free induction decay measurements, thus removing the need for the application any π pulses. |
Nanako Shitara; Arian Vezvaee; Andrés Montoya-Castillo; Shuo Sun; |
| 144 | Scalable Method for Eliminating Residual $ZZ$ Interaction Between Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose and experimentally demonstrate a practically extensible approach for complete cancellation of residual $ZZ$ interaction between fixed-frequency transmon qubits, which are known for long coherence and simple control. |
Zhongchu Ni; Sai Li; Libo Zhang; Ji Chu; Jingjing Niu; Tongxing Yan; Xiuhao Deng; Ling Hu; Jian Li; Youpeng Zhong; Song Liu; Fei Yan; Yuan Xu; Dapeng Yu; |
| 145 | Calibrating and Benchmarking A Distance-5 Surface Code with Superconducting Qubits, Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we report the measurement of logical qubit performance on distance-3 and distance-5 surface codes on a Sycamore superconducting processor, and demonstrate that our code has sufficient performance to overcome the additional errors from increasing qubit number [1]. |
Zijun Chen; |
| 146 | Calibrating and Benchmarking A Distance-5 Surface Code with Superconducting Qubits, Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we report the measurement of logical qubit performance on distance-3 and distance-5 surface codes on a Sycamore superconducting processor, and demonstrate that our code has sufficient performance to overcome the additional errors from increasing qubit number [1]. |
Kevin Satzinger; |
| 147 | Repeated Stabilizer Measurements in A Superconducting Distance-3 Surface Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show the calibration and benchmarking of the weight-2 and weight-4 stabilizer measurements of the distance-3 surface code with a 17-transmon processor. |
Hany Ali; Jorge Marques; Boris Varbanov; Matvey Finkel; Christos Zachariadis; Wouter Vlothuizen; Marc Beekman; Nadia Haider; Barbara Terhal; Leonardo DiCarlo; |
| 148 | Recent Experimental Demonstrations: Logical Memory and An Error-suppressed Magic State with Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we review two recent demonstrations on superconducting qubits in a heavy-hexagon lattice. |
Neereja Sundaresan; |
| 149 | Hybrid Cat-transmon Architecture for Scalable, Hardware-efficient Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, implementing high-fidelity, bias-preserving gates between dissipative cats is experimentally challenging, requiring both low loss and strong engineered dissipation. To circumvent these onerous experimental requirements, we propose a scalable quantum computing architecture where dissipative cat qubits are concatenated into repetition or surface codes, and syndromes are measured using ancillary transmon qubits. |
Connor Hann; Christopher Chamberland; Harald Putterman; Joseph Iverson; Arne Grimsmo; Oskar Painter; Fernando Brandao; Kyungjoo Noh; |
| 150 | Performance of Surface Codes with Imperfect Erasure Detection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we consider the situation when the erasure-conversion efficiency (η) is not 100%. |
Kathleen Chang; Shraddha Singh; Kaavya Sahay; Robert Schoelkopf; Steven Girvin; Shruti Puri; |
| 151 | Complete Leakage Removal in The Surface Code on Superconducting Qubits – Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Further, the population accumulates in these states as the code is extended in time, and is a limiting factor in cutting-edge QEC experiments. Here, we study the dynamics of such leakage events in the context of the surface code error correction circuit, showing how leakage spreads in space and time. |
Matthew McEwen; Kevin Miao; Juan Atalaya; Daniel Sank; Yu Chen; |
| 152 | Complete Leakage Removal in The Surface Code on Superconducting Qubits – Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the experimental realization of a distance-3 surface code with leakage removed on all qubits in each error correction cycle. |
Kevin Miao; Matthew McEwen; Juan Atalaya; Daniel Sank; Yu Chen; |
| 153 | Star Code: Experimental Demonstration of Autonomous Error Correction with Two-Qutrits (Part I Theory) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop a new protocol, called the star code, that utilizes only two-photon beam-splitting and squeezing processes to preserve a logical qubit. |
Tanay Roy; Ziqian Li; David Rodriguez Perez; Eliot Kapit; David Schuster; |
| 154 | Star Code: Experimental Demonstration of Autonomous Error Correction with Two-Qutrits (Part II Experiment) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop a coherence-preserving inductive coupler capable of providing individual sideband rates larger than 5 MHz while suppressing residual static cross-Kerr strength below 300 kHz. |
Ziqian Li; Tanay Roy; David Rodriguez Perez; Eliot Kapit; David Schuster; |
| 155 | Error Correcting Codes on Near-term Devices of Quasi-linear and Central-spin-like Connectivity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate different recovery schemes for the encoded quantum state based upon the classical information obtained by the measurement outcome. |
Regina Finsterhoelzl; Guido Burkard; |
| 156 | Scalable and Robust Reinforcement Learning Decoding of Surface Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we developed and successfully tested, to the best of our knowledge, the first robustness test for reinforcement learning decoders. |
Alexandru Paler; Jerome Lenssen; |
| 157 | Implementing Leakage Reduction Units for Quantum Error Correction with Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the realization of hardware-efficient leakage reduction units (LRU) in superconducting qubits in the context of quantum error correction. |
Jorge Marques; Hany Ali; Matvey Finkel; Hendrik Veen; Sean van der Meer; Santiago Valles-Sanclemente; Boris Varbanov; Wouter Vlothuizen; Marc Beekman; Nadia Haider; Barbara Terhal; Leonardo DiCarlo; |
| 158 | Electron Charge Qubits on Solid Neon with 0.1 Millisecond Coherence Time Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report our experimental realization of ultralong-coherence electron charge qubits based on a unique platform that we recently developed. |
Xinhao Li; Xianjing Zhou; Qianfan Chen; Gerwin Koolstra; Ge Yang; Brennan Dizdar; Xu Han; Xuefeng Zhang; David Schuster; Dafei Jin; |
| 159 | Confining Electrons Floating on Helium in Sub-Micron Quantum Dot Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The large dots make it difficult to spatially pinpoint and precisely manipulate charges both of which are requirements for high fidelity qubit operation. With this in mind, we fabricate multiple arrays containing millions of highly uniform, sub-micron quantum dots and explore the effect that dot size has on the electron confinement. |
Mayer Feldman; Kyle Castoria; Stephen Lyon; |
| 160 | Towards A Mechanical Qubit in A Carbon Nanotube Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our work, we develop a reliable process to fabricate compact multi-electrode circuits that can sustain the harsh conditions of the nanotube growth. |
Roger Tormo Queralt; Adrian Bachtold; Christoffer Moller; Andrew Cleland; David Czaplewski; Fabio Pistolesi; chandan Samantha; Sergio Lucio de Bonis; Sergio Lucio de Bonis; Sergio Lucio de Bonis; |
| 161 | Correlated Transport of Electrons on Helium Through A Gate-defined Island Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report on the transport behavior of strongly-interacting liquid and solid states of electrons on helium through a controllable electron-island gate. |
Niyaz Beysengulov; Camille Mikolas; Austin Schleusner; Joe Kitzman; David Rees; Johannes Pollanen; |
| 162 | Collective Excitations of Microchannel-confined Electrons on Helium Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present the results of recent experiments in which the electron system is simultaneously subjected to microchannel confinement and GHz-frequency microwave excitation. |
Camille Mikolas; Niyaz Beysengulov; Austin Schleusner; Joe Kitzman; David Rees; Johannes Pollanen; |
| 163 | High-frequency Transport of Microchannel-confined Electrons on Helium Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a study of the electron transport in a hybrid microchannel device under high-frequency f = 1-20 MHz driving fields. |
Austin Schleusner; Niyaz Beysengulov; Camille Mikolas; Joe Kitzman; David Rees; Johannes Pollanen; |
| 164 | Development of The Electrohydrodynamic Instability of Charged Liquid Helium Surface Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present the experimental investigation of the temporal dynamics of the instability as a function of charge density and electric field. |
Pranaya Kishore Rath; Paul Leiderer; Ambarish Ghosh; |
| 165 | Kelvin Probe Measurement of High Desnity, Mobile Electrons on A Thin Helium Film Supported By A Metal Substrate Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using an ultra-smooth amorphous metal with a thin central channel connecting two large area gates, we observe evidence of mobile surface state electrons at high electron density. |
Kyle Castoria; Stephen Lyon; |
| 166 | Electron Transport on Thin Helium Film Across Mm Long Transport Line Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate the efficient transport of high densities of electrons across a ~50 nm thick van der Waals helium film. |
Tiffany Liu; Kyle Castoria; Stephen Lyon; |
| 167 | Characterization of Magnetically Levitated Drops of Liquid 3He and 4He Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will describe experiments with millimeter-scale drops of pure 4He and pure 3He that are trapped by diamagnetic levitation in high vacuum. |
Jack Harris; Charles Brown; Glen Harris; Mehdi Namazi; Yiqi Wang; Mehmet Tuna Uysal; Daniel Sibilia; Theophilus Human; Igor Moreira; |
| 168 | Electron Spin Coherence on A Solid Neon Surface Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper, we present theoretical studies of the electron spin coherence on a solid neon (Ne) surface, motivated by our recent experimental realization of single-electron charge qubit on solid Ne. |
Qianfan Chen; Ivar Martin; Liang Jiang; Dafei Jin; |
| 169 | Towards Strong Coupling in Single Electron-on-Helium Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present our latest experiments in the platform towards strongly coupling the translational state of a single electron to a superconducting resonator. |
Brennan Dizdar; Christopher Wang; Gerwin Koolstra; David Schuster; |
| 170 | Non-inertial Motion Dependent Bell State Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For this purpose, we combine a SPDC source with a rotating Sagnac interferometer. |
Julius Arthur Bittermann; Marcus Huber; Matthias Fink; Rupert Ursin; |
| 171 | Paving The Way Towards 800 Gbps Quantum-Secured Optical Channel Deployments in Mission-Critical, Real-World Environments Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate the validity of quantum key distribution at industry scale. |
Omar Amer; Marco Pistoia; Monik Behera; Joseph Dolphin; James Dynes; Benny John; Paul Haigh; Yasushi Kawakura; David Kramer; Jeffery Lyon; Navid Moazzami; Tulasi Movva; Antigoni Polychroniadou; Suresh Shetty; Greg Sysak; Farzam Toudeh-Fallah; Sudhir Upadhyay; Robert Woodward; Andrew Shields; |
| 172 | Scheduling Quantum Teleportation in Noisy Memories Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We give closed-form analytical expressions for calculating the average fidelity with respect to the load, buffer size, and decoherence rate of the memory platform for different scheduling policies. |
Aparimit Chandra; Wenhan Dai; Don Towsley; |
| 173 | Performance of Quantum Network Applications Utilising Multiple Contemporaneous Quantum Resources Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a method that, in the presence of an arbitrary function capturing the trade-off between the rate and fidelity of an entangled link, finds the optimal choice for the window size which minimises the expected time taken to carry out one component round of the protocol. |
Bethany Davies; Gayane Vardoyan; Stephanie Wehner; |
| 174 | Requirements for Processing-node Quantum Repeaters on A Real-world Fiber Grid Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work sheds light on the path towards scaling quantum repeaters to distribute high-quality entanglement over hundreds of kilometers. |
Francisco Ferreira da Silva; Stephanie Wehner; Guus Avis; |
| 175 | Using Nonclassical Resources to Strengthen Two-Party Zero-Communication Reductions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we investigate the quantum advantage gained by adapting the recently introduced classical zero-communication reduction (ZCR) framework to non-classical resources (“Zero-communication reductions”, Narayanan et al., Theory of Cryptography, 2020) . |
Sarah Hagen; Eric Chitambar; |
| 176 | Optimal Entanglement Distribution Policies in Homogeneous Repeater Chains with Cutoffs Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work sheds light on how to distribute entangled pairs in large quantum networks using a chain of intermediate repeaters with cutoffs. |
Álvaro Iñesta; Gayane Vardoyan; Lara Scavuzzo; Stephanie Wehner; |
| 177 | Effect of Asymmetry on The Performance of Atomic Ensemble Based Repeater Protocols Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We find that the secret key rate achievable by an elementary link performing entanglement-based quantum key distribution decreases as the degree of asymmetry increases. |
Hana Jirovská; Stephanie Wehner; David Maier; |
| 178 | Secure Multi-party Quantum Computation Protocol Built on Top of The Triply-even Quantum Error-correcting Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we describe MPQC protocol which adopts unconventional triply-even Calderbank-Shor-Steane (CSS) quantum error-correcting codes (QECCs) [2-5]. |
Petr Mishchenko; Keita Xagawa; |
| 179 | Symmetry Protection of Measurement-based Teleportation in Ising Graphs Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discuss a new class of SPT states which we call Ising graphs. |
Zhangjie Qin; Vito Scarola; Robert Raussendorf; Eran Sela; Daniel Azses; |
| 180 | Bounds on Bipartite Entanglement Distribution Rates for Discrete and Continuous Variable Quantum Switches Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a method for finding analytical bounds on the supportable request rates, i.e., rates for which request queues are stable, meaning the average waiting times for requests are finite. |
Ian Tillman; Thirupathaiah Vasantam; Saikat Guha; Kaushik Seshadreesan; |
| 181 | Memory Decoherence-Aware Entanglement Purification in Quantum Communication Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we present our theory and simulation results, for instance the potential fidelity advantage of wait-till-the-end strategy over purify-immediately strategy. |
Allen Zang; Xinan Chen; Alexander Kolar; Joaquin Chung Miranda; Martin Suchara; Rajkumar Kettimuthu; Eric Chitambar; |
| 182 | Quantum Steganography in An Optical Channel Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we develop schemes for steganographic communication using Fock and coherent states in optical channels based on disguising the communications as thermal noise. |
Bruno Avritzer; Todd Brun; |
| 183 | Entanglement Distribution Over Two-Sided Noisy Quantum Channels Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our work, we will focus on two particular cases where both channels are dephasing channels and where both channels are amplitude-damping channels. |
Xinan Chen; Eric Chitambar; |
| 184 | Multipartite Nonlocality in Clifford Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work serves as a guide for identifying the resources needed to produce different forms of nonlocality. |
Amanda Gatto Lamas; Eric Chitambar; |
| 185 | Quantifying The Performance of Approximate Teleportation and Quantum Error Correction Via Symmetric Two-PPT-extendibility Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The ideal realization of quantum teleportation relies on having access to a maximally entangled state; however, in practice, such an ideal state is typically not available and one can instead only realize an approximate teleportation. With this in mind, we present a method to quantify the performance of approximate teleportation when using an arbitrary resource state. |
Vishal Singh; Mark Wilde; Tharon Holdsworth; |
| 186 | More for LESS: Optimal Control of Open Quantum Systems Within The Born Approximation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In the context of the Born approximation, i.e., neglecting system-environment correlations in the composite system state and assuming a time-independent environment state, we develop the dynamics of controlled, time-dependent quantum systems in the presence of irreversible environment-induced decoherence. |
Matthew Grace; Constantin Brif; Herschel Rabitz; Robert Kosut; |
| 187 | Accelerating The Quantum Optimal Control of Large Qubit Systems with Symmetry-based Hamiltonian Transformations and Linear Unitary Propagators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have developed a novel framework for the quantum optimal control (QOC) of multi-qubit systems. |
Xian Wang; Bryan Wong; Anshuman Kumar; |
| 188 | Quantum Optimal Control in A Generalized Rotating Frame Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we introduce a method for quantum optimal control in an extended Hilbert space, where the quantum dynamics becomes exactly differentiable without needing rotating-wave approximations. |
Agustin Di Paolo; William Banner; Jack Qiu; Jeffrey Grover; William Oliver; |
| 189 | Pontryagin–Optimal Control of A Non-Hermitian Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate that the latter approach can effectively find trajectories which maintain high state purity even in the case of inefficient detection. |
Philippe Lewalle; Birgitta Whaley; |
| 190 | Application of Pontryagin’s Maximum Principle to Quantum Metrology in Dissipative Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We find that the optimal control is singular without dissipation but can become unbounded once the quantum decoherence is introduced. |
Chungwei Lin; |
| 191 | Non-adiabatic Majorana Brading Protocol in A Y-shaped Nanowire Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently adiabatic Majorana braiding has been studied numerically for a realistic Y-shaped nanowire junction. In this work, we find optimized nonadiabatic braiding protocols on these Y junctions using simulated annealing and Pontryagin’s minimum principle. |
Sutapa Samanta; Haylen Gerhard; Armin Rahmani; |
| 192 | A Globally Convergent Approach for Quantum Control and System Identification Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Two significant difficulties limit the power of these methods: the need to numerically simulate the evolution of the quantum system many times, and the difficulty in finding near-optimal solutions in the presence of multiple local minima. Here we introduce a formulation of quantum control that removes both of these difficulties. |
Denys Bondar; Kurt Jacobs; Georgios Korpas; Jakub Marecek; Zakhar Popovych; Jiri Vala; |
| 193 | Counterdiabatic Optimised Local Driving Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that when coupled with additional parameterised driving terms, the path of the system can be optimised in a way that enhances the loss-suppressing effects of a chosen local order of the counterdiabatic protocol. |
Ieva Cepaite; Andrew Daley; Callum Duncan; Anatoli Polkovnikov; |
| 194 | Fast-forward Scaling Theory for Nonadiabatic Transitions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The fast-forward scaling theory was proposed as a method for changing time scale of given dynamics without changing measurement outcomes. |
Takuya Hatomura; |
| 195 | Assessing The Limits of Controllability for Electron Spin Qubits Through Quantum Optimal Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Evaluating the most optimistic capabilities of quantum devices for specific applications is a nascent use of quantum optimal control theory, where classical numerical simulations estimate essential properties such as quantum speed limits and minimum control times as a function of system parameters and limitations. Here we estimate these quantities for nitrogen-vacancy centers in diamond, a paradigmatic example of an electron spin qubit. |
Paul Kairys; Jonathan Marcks; Nazar Delegan; Jiefei Zhang; F. Joseph Heremans; David Awschalom; |
| 196 | Analytically Realizing Hybrid Boson-Qubit Operations Via Hamiltonian Simulation Techniques Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we introduce an analytic approach for realizing specific classes of operations via two matrix product formulas commonly used in Hamiltonian simulation, the Lie-Trotter and Baker-Campbell-Hausdorff product formulas. |
Christopher Kang; Micheline Soley; Eleanor Crane; Steven Girvin; Nathan Wiebe; |
| 197 | Improving Pulse Exploration in Model Predictive Quantum Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we explore the exploitation / exploration tradeoff within model predictive quantum control (MPC). |
Andy Goldschmidt; |
| 198 | Quantum Noise Spectroscopy Informed Optimized Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate the utility of QNS-informed control through the design of single qubit operations. |
Andrew Murphy; Yasuo Oda; Timothy Sweeney; Kevin Schultz; Leigh Norris; Gregory Quiroz; |
| 199 | Time-division Multiplexed Superconducting Qubit Control Using Ultra-low-power, Base-temperature Cryo-CMOS Multiplexer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we demonstrate the feasibility to perform functional time-division multiplexing of qubit control signals using a custom-designed, ultra-low power (<1 µW), fast switching (~2 ns) cryo-CMOS multiplexer operating at the base temperature stage of a dilution refrigerator, with port-to-port signal crosstalk suppressed by greater than 30 dB. |
Rohith Acharya; Steven Brebels; Alexander Grill; Jeroen Verjauw; Tsvetan Ivanov; Daniel Perez Lozano; Danny Wan; Jacques Van Damme; A. M. Vadiraj; Massimo Mongillo; Bogdan Govoreanu; Jan Craninckx; Iuliana Radu; Georges Gielen; Francky Catthoor; Anton Potocnik; Kristiaan De Greve; |
| 200 | Vector Microwave Signal Modulators Using High Kinetic Inductance Superconductors M. Pushp1, N. D. Johnson1, 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: We describe device geometries designed to offer amplitude and phase modulation as well as frequency up-conversion at millikelvin temperatures. |
Mridul Pushp; Noah Johnson; Anthony Sigillito; |
| 201 | Control-Signal Crosstalk in Flip-Chip Superconducting Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For such a routing scheme to be scalable, the total crosstalk has to be low enough. We will discuss how far we are from this goal and what we have done to reach our level of performance. |
Sandoko Kosen; Hang-Xi Li; Andreas Nylander; Marcus Rommel; Marco Caputo; Kestutis Grigoras; Leif Grönberg; Robert Rehammar; Liangyu Chen; Christian Križan; Christopher Warren; Giovanna Tancredi; Janka Biznárová; Amr Osman; Anita Roudsari; Alexey Zadorozhko; Miroslav Dobsicek; Tahereh Abad; Jorge Fernández-Pendás; Göran Johansson; Anton Kockum; Per Delsing; Joonas Govenius; Jonas Bylander; |
| 202 | Scalable Flexible Coaxial Ribbon Cables for High-Density Quantum Wiring (Part I) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report improvements on the design and fabrication of superconducting 53 wt% Nb-47 wt% Ti (Nb47Ti) FLexible coAXial ribbon cables (FLAX). |
Jenny Smith; Tucker Vana; Kyle Thompson; Alirio Boaventura; Johanna Zultak; Benjamin Mazin; |
| 203 | Scalable Flexible Coaxial Ribbon Cables for High-Density Quantum Wiring (Part II) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation we share progress on the cable production system using a custom laser welding technique to produce a low-cost, high-performance quantum I/O solution. |
Kyle Thompson; Tucker Vana; Jennifer Smith; Alirio Boaventura; Johanna Zultak; Ben Mazin; |
| 204 | Optical Interfaces for Superconducting Microwave Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discuss active and passive heat loads and the efficiency and added noise requirements for optical to microwave and microwave to optical subsystems. |
Matthew Weaver; Robert Stockill; Frederick Hijazi; Thierry van Thiel; Martin Zemlicka; Simon Groeblacher; |
| 205 | Temperature Performance of Magnetic Shielding for Multi-Qubit Chip Carrier Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we introduce a magnetic shielding for our multi-qubit chip carrier: QCage.24[3]. |
Soren Andresen; Patrick Paluch; Alexander Zilz; Ioan-Mihai Pop; Wolfgang Wernsdorfer; |
| 206 | Surface Acustic Wave Filters for Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose to use acustic wave filters, well-established in the Telecommunications industry, as a Purcell filter. |
David Eslava; Eloi Guerrero; Lluis Acosta; Paul Jamet; Yifei Chen; Joel Pérez; Chris Hensel; Albert Solana; Daniel Szombati; Ramiro Sagastizabal; Pedro de Paco; Pol Forn-Díaz; |
| 207 | Cryogenic Thermal Modeling for Scalable High Density Signaling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we construct a cryogenic to room temperature thermal conductivity model for 70-30 (C71500) cupronickel, a material found in semi-rigid coaxial cables that are commonly used in dilution refrigerators. |
Naomi Raicu; Tom Hogan; Thomas Douglas; David Pappas; Xian Wu; David Snow; Mark Field; Matthew Hollister; |
| 208 | Characterization of Chip Packaging for Multi-Qubit Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we present the results from our newest multi-qubit chip packaging solution: QCage.24 [4]. |
Merlin von Soosten; Slawomir Simbierowicz; Volodymyr Monarkha; Soren Andresen; Russell Lake; |
| 209 | Quantifying The Power Radiated to A Qubit Through Its Control Lines Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report measurements of the power radiated from a qubit drive line to a quantum device within a dilution refrigerator. |
Slawomir Simbierowicz; Volodymyr Monarkha; Nurul Huda; Russell Lake; |
| 210 | Noise and Signal Distortions in Qubit Wiring Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we highlight recent measurements to accurately characterize cryogenic qubit control and readout lines at microwave frequencies. |
Russell Lake; Md Nurul Huda; Volodymyr Monarkha; Slawomir Simbierowicz; Antti Vaaranta; |
| 211 | Generalized Randomized Compiling for Non-Clifford Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper we extend randomized compiling to circuits containing non-Clifford two-qubit gates, two-qutrit gates , as well as certain k-qubit gates for k > 2. |
Hammam Qassim; |
| 212 | Calibration-free Quantum Error Mitigation with Classical Shadows Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This technique is enabled whenever the symmetries coincide with the irreducible representations of the classical shadows protocol. |
Andrew Zhao; Akimasa Miyake; |
| 213 | Predicting Dynamics and Measuring Crosstalk with Simultaneous Rabi Experiments Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: During this talk, we introduce a novel simultaneous Rabi experiment for characterizing drive crosstalk that is robust to SPAM errors. |
Adam Winick; Jan Balewski; Gang Huang; Yilun Xu; |
| 214 | Quantum Error Mitigation for GKP Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recent works have also explored the application of error mitigation techniques together with error correction [1, 2, 3]. In this talk, we extend these ideas to the continuous variable case and, in particular, to the Gottesman-Kitaev-Preskill (GKP) code [4]. |
Alessandro Ciani; |
| 215 | Beyond Spectator Qubits: Noise Mitigation with Continuous Measurements, Photonic Modes, and Heisenberg-limited Performance Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we generalize the concept to that of a "spectator mode": a photonic mode which continuously measures the spatially correlated noise fluctuations and applies a continuous correction drive to a frequency-tunable data qubit. |
Andrew Lingenfelter; Aashish Clerk; |
| 216 | Improving The Performance of Noisy Quantum Computers Supporting Qubit and Qutrit Operations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we describe Noiseless Output Extrapolation (NOX), a recently developed error mitigation protocol that can significantly enhance the performance of noisy, intermediate-scale quantum devices. |
Samuele Ferracin; |
| 217 | Dynamical Decoupling of Crosstalk on Superconducting Qubit Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Through experimental runs performed on several Rigetti quantum computing units (QPUs), we first demonstrate that DD is capable of improving coherence times for isolated qubits, as well as suppressing errors caused by the ZZ coupling between pairs of qubits. Extending this framework to cycles containing 2-qubit gates, we show that DD can be inserted to decouple qubits from crosstalk occurring during neighboring 2-qubit gates, and demonstrate the efficacy of this procedure on quantum approximate optimization algorithm (QAOA) circuits. |
James Sud; Shon Grabbe; Bram Evert; Matthew Reagor; Hong-Ye Hu; Zoe Gonzalez Izquierdo; Eleanor Rieffel; Zhihui Wang; |
| 218 | Crosstalk Characterization in High-coherence Multi-qudit Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: When scaling up to a multi-qudit system with multiple cavity modes, this nonlinearity results in spurious inter-mode coupling which lowers the gate fidelity. In this presentation, we characterize the effects of such crosstalk by analyzing several popular control protocols. |
Xinyuan You; Doga Kurkcuoglu; Taeyoon Kim; Shaojiang Zhu; Tanay Roy; David Zanten; Silvia Zorzetti; |
| 219 | Direct Observation and Manipulation of Non-equilibrium Quasiparticle Tunneling: Part 1/2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A resulting asymmetry between the quasiparticle tunneling rates in the two qubit states allows us to transfer quasiparticles on-demand, thus actively manipulating the charge-parity of the transmon. In the first part of this two-part talk, we will introduce the concept and setup of our experiment. |
Heekun Nho; Pavel Kurilovich; Thomas Connolly; Spencer Diamond; Valla Fatemi; Michel Devoret; |
| 220 | Direct Observation and Manipulation of Non-equilibrium Quasiparticle Tunneling: Part 2/2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By measuring the temperature dependence of the quasiparticle tunneling rates in the ground and excited states of the transmon, we find evidence for the effective thermalization of the quasiparticles. |
Thomas Connolly; Pavel Kurilovich; Heekun Nho; Spencer Diamond; Valla Fatemi; Michel Devoret; |
| 221 | Reduction of Correlated Errors in Superconducting Qubits Using Normal Metal Back-side Metallization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have fabricated devices with normal metal reservoirs for phonon downconversion on the opposite face of the chip from an array of charge-sensitive transmon qubits. We present measurements of devices with and without this back-side metallization. |
Vito Iaia; Jaseung Ku; Andrew Ballard; Clayton Larson; Eric Yelton; Chuan-Hong Liu; Shravan Patel; Robert McDermott; B.L.T. Plourde; |
| 222 | Numerical Modeling of Phonon-Mediated Quasiparticle Generation in Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present a numerical model of acoustic phonon transport in a Si-crystal using Geant4 for Condensed Matter Physics (G4CMP), a low-temperature Monte-Carlo simulation package. |
Eric Yelton; Clayton Larson; Natalie Isenberg; Gabriel Spahn; Spencer Weeden; Robert McDermott; B.L.T. Plourde; |
| 223 | The Emergence of The Strong Dispersive Regime of Circuit Quantum Electrodynamics with Spins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, I will present our latest work on spin-spin coupling through virtual microwave photons, an essential step towards resonator-mediated two-qubit gates. |
Patrick Harvey-Collard; |
| 224 | Towards An Exchange-Only Compatible Spin-Photon Interface in Si/SiGe Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we discuss the integration and characterization of Single Layer Etch Defined Gate Electrode (SLEDGE) devices, which rely on vias to separate front-end from back-end interconnects, with superconducting microwave resonators using flip-chip bonding [4]. |
Nathan Holman; |
| 225 | On-chip Filters for High-impedance Superconducting Resonators in The Hybrid CQED Device Architecture Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will summarize our previous findings and introduce the next step to incorporate low-pass LC filters into our current cavity design. |
Xuanzi Zhang; Jason Petta; |
| 226 | Long-distance Entangling Gates in Three-qubit Quantum Dot Spin Systems Mediated By Microwave Photons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We focus on three-qubit—resonator system, a two-electron triple QD coupled to a single-electron double QD via the resonator. |
Nooshin M. Estakhri; Ada Warren; Edwin Barnes; Sophia Economou; |
| 227 | Strong Coupling Between A Microwave Photon and A Singlet-triplet Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a different approach based on intrinsic spin-orbit interaction that is naturally present in zincblende InAs nanowires. |
Jann Hinnerk Ungerer; Alessia Pally; Artem Kononov; Sebastian Lehmann; Joost Ridderbos; Claes Thelander; Kimberly Dick; Ville Maisi; Pasquale Scarlino; Andreas Baumgartner; Christian Schonenberger; |
| 228 | Spin Qubits in Photon-coupled Microwave Cavites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Input/output theory describes the system’s behavior when driven by an external field and determine the internal qubits states from the transmission amplitude of the output field [3]. |
Nancy Sandler; Samuel Johnson; |
| 229 | Fast and High-fidelity Dispersive Readout of A Spin Qubit Via Squeezing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Within the framework of input-output theory, we analyze the dispersive readout of a single spin in a semiconductor double quantum dot coupled to a microwave resonator. |
Chonfai Kam; |
| 230 | Interplay of Pauli Blockade with Electron-Photon Coupling in Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that the output field of the resonator can be used to infer the leakage current and thus obtain insight into the blockade mechanisms without additional components such as charge or current sensors for each dot. In the case double quantum dot realized in silicon, we show how the valley quasi-degeneracy can impose limitations on this scheme. |
Florian Ginzel; Guido Burkard; |
| 231 | Longitudinal Coupling to Hole Spin Qubits Demonstrated in A Silicon Fin Field-effect Transistor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we investigate the longitudinal coupling of spin qubits to a MW electric field, i.e. an interaction of the form $propto sigma_z V_{MW} cos(omega t)$. |
Simon Geyer; Stefano Bosco; Leon Camenzind; Rafael Eggli; Taras Patlatiuk; Daniel Loss; Richard Warburton; Dominik Zumbuhl; Andreas Kuhlmann; |
| 232 | Two-tone Electrical Drive of Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Motivated by recent experiments on Si spin qubits in fin field-effect transistors [3] demonstrating spin qubit operations up to 4 K [4], here we theoretically investigate bimodal electrical microwave driving (transverse and longitudinal) of single spin qubits. |
J. Carlos Egues; Stefano Bosco; Daniel Loss; |
| 233 | Longitudinal Coupling Used for Resonator Readout of Quantum Dot Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We assess the readout signal-to-noise ratio and discuss how to maximize its value for qubit operation by tuning the longitudinal coupling strength. Tunability and frequency flexibility are appealing features of dynamic longitudinal coupling, and our work demonstrates its potential as a powerful new technique for semiconductor qubit readout. |
Benjamin Harpt; Joelle Corrigan; Nathan Holman; Piotr Marciniec; Danna Rosenberg; Donna-Ruth Yost; Rabindra Das; William Oliver; Robert McDermott; Mark Friesen; Mark Eriksson; |
| 234 | Remote Entanglement By Measurement of Spin Qubits Via Longitudinal (curvature) Couplings to A Superconducting Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Based on our previous proposals [1,2] we study the feasibility of remote entanglement of spin qubits via joint continuous measurement by a superconducting resonator using longitudinal (curvature) couplings. |
Rusko Ruskov; Charles Tahan; |
| 235 | Electric-dipole Spin Resonance of A Flopping Mode Acceptor-dot Hybrid Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We perform magneto- and two-tone spectroscopy and find the signature of EDSR driven by both photons in the superconducting resonator and the MW tone. |
Felix-Ekkehard von Horstig; |
| 236 | Understanding Material Systems for Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will discuss our recent work to characterize the dominant sources of loss in state-of-the-art tantalum superconducting circuits. |
Russell McLellan; Kevin Crowley; AVEEK DUTTA; Nana Shumiya; Alexander Place; Chenyu Zhou; Conan Weiland; Andi Barbour; Irawikanari Waluyo; Adrian Hunt; Xin Gui; Hoang Le; Youqi Gang; Esha Umbarkar; Cady Feng; Trisha Madhavan; Steven Hulbert; Mingzhao Liu; Andrew Walter; Robert Cava; Andrew Houck; Nathalie de Leon; |
| 237 | Exploring On-chip Qusaiparticle Thermodynamics Through Unconfined Circuit Quantum Electrodynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we reveal that the Aluminum JJ of a transmon still conserves the QP-induced temperature dependence which well follows Josephson physics even when the transmon is strongly driven to unconfined states, and thereby the circuit is fully linearized. |
Byoung-moo Ann; Younghun Ryu; Seung-Bo Shim; Jinwoong Cha; Junho Suh; |
| 238 | Characterizing New Materials for Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present further recent results on exploring new material systems for superconducting qubits and understanding microscopic sources of noise and loss. |
Nana Shumiya; Kevin Crowley; Russell McLellan; Chenyu Zhou; Yichen Jia; Conan Weiland; Andi Barbour; Adrian Hunt; Irawikanari Waluyo; Kim Kisslinger; Xin Gui; AVEEK DUTTA; Alexander Place; Esha Umbarkar; Cady Feng; Steven Hulbert; Mingzhao Liu; Andrew Walter; Robert Cava; Andrew Houck; Nathalie de Leon; |
| 239 | Optimizing Designs and Materials for Transmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This implies losses from other sources, such as Josephson junction interfaces and substrates, have to be mitigated if further improvements in lifetimes are to be achieved. In this talk, we discuss some progress in addressing these other loss channels, focusing especially on losses from junction interfaces. |
Kevin Crowley; Nana Shumiya; Russell McLellan; AVEEK DUTTA; Alexander Place; Matthew Bland; Ray Chang; Esha Umbarkar; Youqi Gang; Hoang Le; Robert Cava; Nathalie de Leon; Andrew Houck; |
| 240 | A 200 Mm Wafer Size Superconducting Qubit Foundry at MIT Lincoln Laboratory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This Trusted, ISO9001 facility contains automated cluster tools with improved process resolution and control, automated defect inspection and characterization for improved yield, in-line metrology, and additional real estate to accommodate multiuser runs. We will discuss the development of this 200 mm process, in particular the development of a superconducting air bridge process and of a flip-chip process for 2-D chip stacking. |
Jeffrey Knecht; Cyrus Hirjibehedin; Kate Azar; Bethany Niedzielski; Michael Gingras; David Kim; Alexander Melville; William Oliver; Meghan Schuldt; Mollie Schwartz; Jonilyn Yoder; |
| 241 | Towards Design and Fabrication of Transmons Using Single-Crystal Silicon Fins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we incorporate high aspect ratio fins fabricated from low-loss, single-crystal silicon in superconducting circuits to enhance transmon coherence and scalability. |
Tony McFadden; Aranya Goswami; Tongyu Zhao; Teun van Schijndel; Corey Rae McRae; Raymond Simmonds; David Pappas; Chris Palmstrom; |
| 242 | Understanding Decoherence Mechanisms in Tantalum-based Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate that pure α-tantalum can be grown on silicon either with a Nb seed layer at ambient temperature, or without a seed layer at high substrate temperatures. |
Candice Kang; Larry Chen; Maria Virginia Altoe; Kan-Heng Lee; Christian Jünger; Trevor Chistolini; D. Frank Ogletree; Chengyu Song; David Santiago; Irfan Siddiqi; |
| 243 | High Sensitivity Loss Tangent Measurement of C-Plane Sapphire at MK with A High Q Nb Superconducting Radio-frequency Cavity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present results on the dielectric loss tangent of c-plane sapphire at the temperatures and fields relevant for the superconducting quantum computing regime. |
Daniel Bafia; Anna Grassellino; Andrei Lunin; Alexander Romanenko; |
| 244 | Characterization of Losses in Dielectric Substrates for Quantum Computing Devices Using Tunable Superconducting RF Cavity Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present microwave loss characterization results for Si and Sapphire – two substrate materials widely used in fabrication of superconducting QC devices. |
Ivan Nekrashevich; Geev Nahal; Daniil Frolov; Roman Pilipenko; Crispin Contreras-Martinez; Yuriy Pischalnikov; Vyacheslav Yakovlev; Sergey Kazakov; Timergali Khabiboulline; Mattia Checchin; Alexander Romanenko; Anna Grassellino; |
| 245 | Experimental Tools for A/B Materials Testing Towards High-Coherence Superconducting Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Harnessing the power of simple A/B testing for materials engineering would allow immediate performance improvements in superconducting devices, but requires a new set of standard experimental tools. In this talk, we propose some of these enabling tools, including a standard resonator mask set for probing the loss contributions of device interfaces, an open-source resonator data analysis codebase, and a framework for more rigorous error analysis of materials loss parameters. |
Corey Rae McRae; Shaojiang Zhu; Anthony McFadden; John Pitten; Nicholas Materise; Nicholas Price; Cameron Kopas; Ella Lachman; Yuvraj Mohan; Joel Ullom; Mustafa Bal; Josh Mutus; |
| 246 | Automation of Quantum-chip Selection Using Supervised Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We developed a tool based on room-temperature junction resistance measurements to automate the classification of failure modes at the wafer and chip level, to speed up fabrication development, and to automate chip sorting. |
Denis Chevallier; Gerardo Jaramillo; Konstantin Nesterov; Chiara Pelletti; Michael Sinko; Kyunghoon Lee; Alexei Marchenkov; |
| 247 | Gap-Engineered Transmon Qubits for Mitigation Against Quasiparticles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, by adding disorder between the Al and Ti metals in the form of a thin AlOx layer, we can restore the gap to the value of thin film Al and improve the relaxation time to 32 µs. We use these results to inform the design of new transmons with low-gap trapping away from the junction. |
Zachary Steffen; Haozhi Wang; Yizhou Huang; Yi-Hsiang Huang; Kungang Li; Sudeep Dutta; Frederick Wellstood; Benjamin Palmer; |
| 248 | Characterization of Fabrication Methods to Reach High Coherence Superconducting Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Although significant improvements in coherence time have been made over the last years, reaching qubit lifetimes well beyond 100 µs involves careful investigation of all fabrication steps. Here, we demonstrate that such high device qualities can be achieved by a combination of substrate cleaning, etching optimization and post-process sample cleaning. |
Leon Koch; Niklas Bruckmoser; David Bunch; Tammo Sievers; Kedar Honasoge; Thomas Luschmann; Stefan Filipp; |
| 249 | Observation of The Response of Tantalum Coplanar Waveguide Cavities to Cryogenic Cycle Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we report our observation that the Ta coplanar waveguide (CPW) cavities respond to cryogenic cycles with boosted intrinsic quality factor (Q i). |
Hao Deng; Xiaohang Zhang; Make Ying; Fei Wang; Ran Gao; Chunqing Deng; |
| 250 | Trimming The Frequency of Superconducting Qubits on Sapphire Substrates By A Mode-locked Laser Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While the unannealed qubits showed about 3.5% variation in their resistances, the variation of the resistance of the annealed qubits was improved to be around 1%. This work demonstrates the effectiveness of employing the mode-locked laser to trim the frequency of sapphire-based superconducting qubits, and therefore paves the way to engineer the frequency collision-free lattice with > 100 qubits on such substrates. |
Yanjun Ma; Mo Chen; Jiesu Wang; Shiyao Wu; Kai Chang; Yirong Jin; Haifeng Yu; |
| 251 | Nitride-based Superconducting Microwave Coplanar Waveguide Resonators with Internal Quality Factors Above One Million for Circuit Quantum Electrodynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe that the resonators’ internal quality factor (Qi) decreases from Qi in a high photon number to Qi in a single-photon regime at a base temperature of T = 26.6 mK. |
Paniz Foshat; Paul Baity; Sergey Danilin; Valentino Seferai; Shima Poorgholam-khanjari; Oleg Mukhanov; Matthew Hutchings; Robert Hadfield; Muhammad Imran; Martin Weides; Kaveh Delfanazari; |
| 252 | Demonstration of Fluxonium Qubits Based on Highly-disordered Spinodal Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate that the highly-disordered spinodal superconducting material (Adv. Mater. |
Ran Gao; Make Ying; Hantao Sun; Feng Wu; Hao Deng; Tian Xia; Jianjun Chen; Huijuan Zhan; Fei Wang; Hui-Hai Zhao; Chunqing Deng; |
| 253 | Bias Dependence of Al/AlOx Josephson Phase Diffusion Resistance Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We perform noise-optimized dc transport measurements on test qubit Josephson junctions in order to extract critical parameters that may affect transmon decoherence. |
Maxwell Wisne; Venkat Chandrasekhar; Hilal Cansizoglu; Cameron Kopas; Josh Mutus; |
| 254 | Understanding The Decoherence of Fluxonium from An EJ-tunable Device Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The fluxonium qubit is known for high coherence when biased around its half flux quantum sweet spot. Here we report the intensive study of decoherence models of a fluxonium qubit with in situ tunability of its Josephson energy by varying the external fluxes. |
Feng Wu; Hantao Sun; Xizheng Ma; Zhijun Song; Tenghui Wang; Gengyan Zhang; Hui-Hai Zhao; Chunqing Deng; |
| 255 | Fast and Accurate Design of Readout Resonators for Flip-Chip-Integrated Multi-Qubit Superconducting Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use analytic equations, derived from conformal mapping, and 2D cross-sectional EM simulation, to calculate the frequency and coupling quality factor of resonators within a flip-chip geometry. |
Hang-Xi Li; Sandoko Kosen; Marcus Rommel; Andreas Nylander; Lert Chayanun; Giovanna Tancredi; Kestutis Grigoras; Leif Grönberg; Liangyu Chen; Marco Caputo; Alexey Zadorozhko; Robert Rehammar; Joonas Govenius; Daryoush Shiri; Jonas Bylander; |
| 256 | Strong Coupling of Electron Spin Ensemble to The Eigenmodes of A High-Q Dielectric Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have observed strong coupling of the resonant mode of the electron spin ensemble to different eigenmodes of the dielectric resonator at room temperature. |
Stefano Roccasecca; Zhuo Shen; HongWen Jiang; |
| 257 | Microwave-enhanced Electron Spin Polarization at Millikelvin Temperatures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our project we propose to introduce efficient heat sink to reduce the spin temperature below the equilibrium field temperature. |
Boris Yavkin; Patrice Bertet; Daniel Esteve; Emanuel Flurin; Denis Vion; |
| 258 | Quantized Conductance Doubling in Gate Tunable Hybrid Superconducting-semiconducting Quantum Wire Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we experimentally demonstrate large-scale on-chip integration of gate voltage tunable hybrid superconducting-semiconducting field-effect switch arrays on the InGaAs quantum wells platform. |
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; |
| 259 | Verifiable Quantum Advantage Without Structure Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show a new approach for verifiable quantum advantage which, for a reasonable complexity-theoretic notion of "structure", requires no structure at all. |
Mark Zhandry; Takashi Yamakawa; |
| 260 | Tackling The Qubit Mapping Problem with Permutation-Aware Synthesis Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a novel hierarchical qubit mapping and routing framework. |
Ji Liu; Ed Younis; Mathias Weiden; Paul Hovland; John Kubiatowicz; Costin Iancu; |
| 261 | Nuwa: A Quantum Circuit Transpiler Based on A Finite-Horizon Heuristic for Placement and Routing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a novel transpiler for the placement and routing of quantum circuits on arbitrary target hardware architectures. |
KaWai Chen; Pooya Ronagh; |
| 262 | Intermediate Representations for Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In particular we will cover the closest analogs in existing libraries to formal language, grammars, parsers and finally type safety. |
Rohit Goswami; Sonaly Goswami; Debabrata Goswami; |
| 263 | Intel Quantum SDK Version 1.0: Extended C++ Compiler, Runtime and Quantum Hardware Simulators for Hybrid Quantum-Classical Applications Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The Intel Quantum Software Development Kit (SDK) is a full-stack platform allowing programmers to design their applications on a system consisting of an LLVM-based compiler … |
Xin-Chuan Wu; Pradnya Khalate; Albert Schmitz; Shavindra Premaratne; Kevin Rasch; Sahar Daraeizadeh; Roza Kotlyar; Shengru Ren; Jennifer Paykin; Francis Rose; James Dunn; Gian Giacomo Guerreschi; NICOLAS SAWAYA; Atul Kulkarni; Grant Baker; Beverly Klemme; Nader Khammassi; Randy Morris; Linda Patricia Osuna Ibarra; Robert Flory; Pratik Patel; Xiang Zou; Anne Matsuura; |
| 264 | Efficient Execution of Quantum Algorithms Using The Intel Quantum SDK Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will describe the capabilities of the Intel Quantum SDK which utilizes many optimizations within the quantum compiler, as well as generates binary executables to enable tight integration during execution of workloads — especially for variational algorithms. |
Shavindra Premaratne; Grant Baker; Sahar Daraeizadeh; James Dunn; Robert Flory; Gian Giacomo Guerreschi; Pradnya Khalate; Nader Khammassi; Beverly Klemme; Roza Kotlyar; Atul Kulkarni; Randy Morris; Pratik Patel; Linda Patricia Osuna Ibarra; Jennifer Paykin; Kevin Rasch; Shengru Ren; Francis Rose; NICOLAS SAWAYA; Albert Schmitz; Xin-Chuan Wu; Xiang Zou; Anne Matsuura; |
| 265 | A Functional Approach to The Modular Construction of Quantum Logic: Part I Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our solution is to introduce a quantum functional language extension to the C++ derived language of the Intel Quantum SDK. |
Anne Matsuura; Albert Schmitz; Jennifer Paykin; |
| 266 | A Functional Approach to The Modular Construction of Quantum Logic: Part II Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our solution is to introduce a quantum functional language extension to the C++ derived language of the Intel Quantum SDK. |
Albert Schmitz; |
| 267 | Observing and Braiding Topological Majorana Modes on Programmable Quantum Simulators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work presents an experimental and theoretical framework for the space-resolved detection and exchange of Majorana modes on programmable (noisy) quantum hardware. |
Nikhil Harle; Oles Shtanko; Ramis Movassagh; |
| 268 | Exactly Solving The Kitaev Chain and Generating Majorana-zero-modes Out of Noisy Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: After an ontological elaboration I show that two eigenstates of the Kitaev Hamiltonian exhibit eight signatures usually attributed to MZMs. |
Marko Rancic; |
| 269 | Simulating Adiabatic Braiding of Fractional Hall Anyons on Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will use quantum computers to create FQH quasi-hole excited states with a positive fractional charge. |
Ammar Kirmani; Armin Rahmani; Pouyan Ghaemi; |
| 270 | Rydberg-atom Quantum Computing of NP-complete Problems Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Currently there are growing interests in using Rydberg atom graphs for quantum computing of classically intractable problems, for example, the non-deterministic polynomial-time … |
Jaewook Ahn; |
| 271 | Low-depth Simulations of Fermionic Systems on Realistic Quantum Hardware Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a general strategy for mapping fermionic systems to quantum hardware with realistic qubit connectivity which results in low-depth quantum circuits as counted by the number of native two-qubit gates. |
Manuel G. Algaba; Fedor Simkovic; Pallasena Viswanathan Sriluckshmy; Martin Leib; |
| 272 | Quantum Photonic System Modelling on NISQ Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Tavis-Cummings (TC) cavity quantum electrodynamics effects, describing the interaction of N atoms with an optical resonator, are at the core of atomic, optical and solid state … |
Marina Krstic Marinkovic; Marina Radulaski; Victoria Norman; Tristan Adams; |
| 273 | Formation of Robust Bound States of Interacting Microwave Photons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By introducing interactions between the ring and additional qubits, we observe an unexpected resilience of the bound states to integrability breaking. |
Alexis Morvan; Trond Andersen; Xiao Mi; Charles Neill; Andre Petukhov; Kostyantyn Kechedzhi; Dmitry Abanin; Alexios Michailidis; Igor Aleiner; Lev Ioffe; Pedram Roushan; |
| 274 | Probing Locality and Entanglement Properties Across The Many-body Spectrum Using A Superconducting Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we use a two-dimensional, 4×4 array of superconducting transmon qubits as a quantum emulator to explore locality and entanglement properties across the many-body spectrum of the strongly-interacting hard-core Bose-Hubbard model. |
Amir Karamlou; Yariv Yanay; Agustin Di Paolo; Cora Barrett; Ilan Rosen; Sarah Muschinske; Leon Ding; Patrick Harrington; David Kim; Alexander Melville; Bethany Niedzielski; Jonilyn Yoder; Terry Orlando; Kyle Serniak; Jeffrey Grover; Simon Gustavsson; William Oliver; |
| 275 | Study of Qubit Correlation and Dimer Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have previously worked on studying the dynamics of isolated dimers through computing the magnetic neutron cross-section in IBM’s qubit-based hardware. We now present our work on extending these studies to larger systems, whether that be in the form of a longer spin chain or in the form of a product state of dimers. |
Norhan Eassa; Jeffrey Cohn; Zoe Holmes; Mario Motta; Nicholas Bronn; Lukasz Cincio; Andrew Sornborger; Travis Humble; Arnab Banerjee; Joe Gibbs; |
| 276 | Exploring Spin Chain Dynamics with Superconducting Transmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we discuss probing the scrambling of information in many-body systems using superconducting transmon qubit-based IBM quantum hardware. |
Brendan Rhyno; Smitha Vishveshwara; Sona Najafi; |
| 277 | Simulating Infinite Temperature Energy Transport on Cloud-Accessible Quantum Hardware Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the infinite-temperature transport of energy in the mixed-field Ising model using cloud-accessible superconducting quantum processors and classical simulation techniques. |
I Chi Chen; Yong-Xin Yao; Peter Orth; Thomas Iadecola; |
| 278 | Entangled Quantum Cellular Automata, Physical Complexity, and Goldilocks Rules Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discover that quantum cellular automata (QCA) can exhibit complexity in the sense of the complexity science that describes biology, sociology, and economics. |
Lincoln Carr; Logan Hillberry; Eliot Kapit; Mina Fasihi; Matthew Jones; Nicole Yunger Halpern; Pedram Roushan; Eric Jones; Zhang Jiang; Peter Graf; Charles Neill; Ning Bao; Patrick Rall; Simone Montangero; Simone Notarnicola; Alan Ho; Eric Ostby; |
| 279 | Time Series Anomaly Detection Using Superconducting Transmon Quantum Computers and Error Mitigation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a low circuit depth Quantum Machine Learning algorithm designed to tackle the widely applicable task of detecting anomalous behavior in time series data. |
Jack Baker; Santosh Radha; Barry Sanders; Philippe Lamontagne; Haim Horowitz; Stenio Fernandes; Colin Jones; Noorain Noorani; Vladimir Skavysh; |
| 280 | Spin-split Andreev Levels in A Quantum Dot with Superconducting Leads: Microwave Spectroscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use a hybrid superconductor-semiconductor transmon device to perform spectroscopy of a quantum dot Josephson junction tuned to be in a spin-1/2 ground state with an unpaired quasiparticle. |
Arno Bargerbos; Marta Pita-Vidal; Rok Zitko; Lukas Johannes Splitthoff; Lukas Grunhaupt; Jaap Wesdorp; Yu Liu; Leo Kouwenhoven; Ramon Aguado; Christian Andersen; Angela Kou; Bernard Van Heck; |
| 281 | Spin-split Andreev Levels in A Quantum Dot with Superconducting Leads: Andreev Spin Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we exploit a different qubit subspace, using the spin-split doublet ground state of an electrostatically-defined quantum dot Josephson junction with large charging energy. |
Marta Pita-Vidal; Arno Bargerbos; Rok Zitko; Lukas Johannes Splitthoff; Lukas Gruenhaupt; Jaap Wesdorp; Yu Liu; Leo Kouwenhoven; Ramon Aguado; Bernard Van Heck; Angela Kou; Christian Andersen; |
| 282 | Decoherence Mechanisms in Andreev Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We theoretically study the dephasing of an Andreev spin qubit interacting with nuclear spins. |
Silas Hoffman; |
| 283 | Engineering Flat-Band Lattices with Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present our experimental realization and characterization of a single plaquette of the rhombus chain flat-band lattice and introduce an artificial gauge field to realize a plaquette of an all-flat-band lattice. |
Jeronimo Martinez; Christie Chiu; Basil Smitham; Sara Sussman; Andrew Houck; |
| 284 | Scattering Solution of Interacting Hamiltonian for Electronic Control of Molecular Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We theoretically study how a scattered electron can entangle molecular spin qubits (MSQs). |
Christian Bunker; Silas Hoffman; Jie-Xiang Yu; Xiaoguang Zhang; Hai-Ping Cheng; |
| 285 | Polarized Electrons in A Low-energy Spin-transparent Storage Ring As A Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will explore the possibility of using an entangled train of light pulses impinging on a photocathode to produce electrons with entangled spins. |
Matt Grau; Riad Suleiman; Vasiliy Morozov; |
| 286 | Progress Towards The Sensing of Short Wavelength Spin Waves In Yttrium Iron Garnet Using Nitrogen Vacancy Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present techniques to improve the coherence properties of NV centers close to YIG films. |
Shantam Ravan; Johannes Cremer; Daniel Fernandez; Ilya Esterlis; Eugene Demler; Ronald Walsworth; Amir Yacoby; |
| 287 | Using CQED Techniques to Study of Superconductivity in Monolayer WTe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we explore methods commonly used in circuit quantum electrodynamics (cQED), particularly superconducting qubits to probe the voltage-tunable superconducting state of monolayer tungsten ditelluride (mono-WTe 2). |
Pat Gumann; Charlotte Boettcher; Amir Yacoby; Robert Cava; |
| 288 | Localized Infrared Light Source of Quasiparticles in Transmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present an experiment that takes the opposite approach and controllably introduces infrared light in the vicinity of a 3D aluminum transmon. |
Rodrigo Benevides; Maxwell Drimmer; Giacomo Bisson; Francesco Adinolfi; Yiwen Chu; |
| 289 | Single Electron Spin Resonance By Microwave Photon Counting Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate single electron spin resonance by spin fluorescence detection with a superconducting-qubit-based single microwave photon detector at cryogenic temperature. |
Zhiren Wang; Léo Balembois; Milos Rancic; Eric Billaud; Marianne Le Dantec; Alban Ferrier; Philippe Goldner; Sylvain Bertaina; Thierry Chaneliere; Daniel Esteve; Denis Vion; Patrice Bertet; Emmanuel Flurin; |
| 290 | Continuous-Wave Room-Temperature Masers, Using NV-Centers in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we characterize the operating space of a diamond NV-center maser system. |
Christoph Zollitsch; Stefan Ruloff; Yan Fett; Jonathan Breeze; Christopher Kay; |
| 291 | Transitions in The Learnability of Global Charges from Local Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For random unitary circuits with U(1) symmetry, we present an optimal classical classifier to reconstruct the global charge from local measurement outcomes only. |
Utkarsh Agrawal; Romain Vasseur; Sarang Gopalakrishnan; Andrew Potter; Fergus Barratt; |
| 292 | Measurement-induced Entanglement Transition in A Two-dimensional Shallow Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: After measuring all of the bulk qubits, we study the entanglement structure of the remaining qubits on the one-dimensional boundary. |
Hanchen Liu; Tianci Zhou; Xiao Chen; |
| 293 | Stabilizer Simulations of Measurement- and Feedback-induced Entanglement Transition in The Probabilistic Control of Chaos Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present data on larger system sizes than can be accomplished with exact methods, building on our previous work on a similar model. |
Justin Wilson; Conner LeMaire; Thomas Iadecola; Sriram Ganeshan; Jed Pixley; |
| 294 | Geometric Quantum Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will review the basic concepts of GQML. |
Marco Cerezo; |
| 295 | Scaling (generative) Quantum Machine Learning Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we discuss a set of challenges that particularly generative quantum machine learning [5–7] has to face and demonstrate potential remedies thereof in experiments with non-trivial qubit numbers. |
Christa Zoufal; Stefan Woerner; |
| 296 | Potential and Limitations of Probabilistic Modelling with Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will describe some recent results, which contribute to our understanding of the extent to which different types of quantum probabilistic modelling algorithms may or may not offer concrete advantages over classical algorithms. |
Ryan Sweke; Jens Eisert; Yihui Quek; Marcel Hinsche; Alexander Nietner; Marios Ioannou; Jean-Pierre Seifert; Jonas Haferkamp; Dominik Hangleiter; |
| 297 | Understanding The Role of Data and Quantum Memory in A Quantum Learning Landscape Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We then show that quantum computers, and more specifically quantum memory, offer us an opportunity to learn from a quantum world with exponentially less data than traditional experiments. This exponential advantage holds in predicting properties of physical systems, performing quantum principal component analysis on noisy states, and learning approximate models of physical dynamics. |
Jarrod McClean; |
| 298 | Portfolio Optimization Via Quantum Zeno Dynamics on A Quantum Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a technique that uses quantum Zeno dynamics to solve optimization problems with multiple arbitrary constraints, including inequalities. |
Yue Sun; Dylan Herman; Ruslan Shaydulin; Shouvanik Chakrabarti; Shaohan Hu; Pierre Minssen; Arthur Rattew; Romina Yalovetzky; Marco Pistoia; |
| 299 | Constrained Quantum Optimization for Extractive Summarization on A Trapped-ion Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we consider the extractive summarization constrained-optimization problem and demonstrate the largest-to-date execution of a quantum optimization algorithm that natively preserves constraints on quantum hardware. |
Romina Yalovetzky; Pradeep Niroula; Ruslan Shaydulin; Pierre Minssen; Dylan Herman; Shaohan Hu; Marco Pistoia; |
| 300 | Adaptive Variational Open Quantum System Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present an adaptive variational quantum algorithm to simulate the open quantum system dynamics. |
Huo Chen; Niladri Gomes; Wibe de Jong; |
| 301 | Hybrid Gate-Based and Annealing Quantum Computing for Large-Size Ising Problems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose an algorithm, called large-system sampling approximation (LSSA), to solve Ising problems with sizes up to N gb2 Ngb by an N gb-qubit gate-based chip, and with sizes up to N an2 Ngb by a hybrid computational architecture of an N an-qubit quantum annealer and an N gb-qubit gate-based chip. |
Chen-Yu Liu; Hsi-Sheng Goan; |
| 302 | Quantum Alternating Operator Ansatz (QAOA) Performance Regimes for Continuous Schedules Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For the setting of easier-to-optimize parameter sequences derived from continuous schedules such as linear ramps, QAOA performance diagrams capture the algorithm’s varying performance over starkly different parameter regimes, and yet display qualitatively similar behavior across different target performance metrics and different application domains. In our work, we characterize and explain this observed universal behavior by elucidating the underlying mechanisms, which include the discrete adiabatic theorem, the magnitude of p controlling diabatic transitions at avoided crossings, small-parameter approximations, and holonomies due to changing eigenvector connections. |
Vladimir Kremenetski; Anuj Apte; Tad Hogg; Stuart Hadfield; Norm Tubman; |
| 303 | Trends in Classical Angle Optimization of Ma-QAOA Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We explore whether $p$-ma-QAOA performs better than $(p+2)$-QAOA for larger $p$. |
Anthony Wilkie; Rebekah Herrman; James Ostrowski; |
| 304 | Exponential State Distributions in Quantum Approximate Optimization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we analyze systematic structure in QAOA for optimized MaxCut instances on graph ensembles with 14-23 qubits and depth parameters p≤12. |
Phillip Lotshaw; James Ostrowski; George Siopsis; |
| 305 | Multi-angle QAOA Is Universal for Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we show that ma-QAOA is equivalent to a restriction of continuous-time quantum walks on dynamic graphs. |
Rebekah Herrman; |
| 306 | Effective-Temperature Reduction of Ising Spin-Glass Problems with Quantum Annealing Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We implement and benchmark quantum annealing correction (QAC) on the topology of the D-Wave Advantage quantum annealer, which yields up to 1,300 error-corrected qubits. |
Humberto Munoz-Bauza; Evgeny Mozgunov; Daniel Lidar; |
| 307 | How to Experimentally Evaluate The Adiabatic Condition for Quantum Annealing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have proposed an experimental method for evaluating the adiabatic condition during quantum annealing (QA). |
Yuichiro Mori; Shiro Kawabata; Yuichiro Matsuzaki; |
| 308 | Coherent Flux Qubits for Quantum Annealing (Theory) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the first generation of coherent qubit devices, consisting of both uncoupled and coupled four-Josephson junction flux qubits. |
David López-Núñez; Elia Bertoldo; Fabian Zwiehoff; Luca Cozzolino; Alba Torras Coloma; Boris Nedyalkov; Barkay Guttel; Paul Baity; Martin Weides; Manel Martinez; Pol Forn-Díaz; |
| 309 | Coherent Flux Qubits for Quantum Annealing (Experiment) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present the first characterization of several coherent flux qubit designs fabricated on a single silicon chip. |
Elia Bertoldo; David López-Núñez; Fabian Zwiehoff; Luca Cozzolino; Alba Torras Coloma; Boris Nedyalkov; Paul Baity; Martin Weides; Manel Martinez; Pol Forn-Díaz; |
| 310 | Landau-Zener Tunneling: from Weak to Strong Environment Coupling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using a superconducting tunable capacitively shunted flux qubit, we observe the crossover from weak to strong coupling to the environment. |
Adrian Lupascu; |
| 311 | Continuously Tracked, Stable, Large Excursion Trajectories of Dipolar Coupled Nuclear Spins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report an experimental approach to excite, stabilize, and continuously track Bloch sphere orbits of dipolarcoupled nuclear spins in a solid. |
Ozgur Sahin; Hawraa Al Asadi; Paul Schindler; Arjun Pillai; Erica de Leon Sanchez; Matthew Markham; Mark Elo; Maxwell McAllister; Emanuel Druga; Christoph Fleckenstein*; Marin Bukov; Ashok Ajoy; |
| 312 | Generation of Genuine All-way Entanglement in Defect-nuclear Spin Systems Through Dynamical Decoupling Sequences Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We design sequential or single-shot entangling gates that prepare high-quality GHZ M states with minimal cross-talk and within the coherence times. |
Evangelia Takou; Edwin Barnes; Sophia Economou; |
| 313 | Quantum Control Over Highly-Coherent Nuclear Spins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The complexity of the quantum control challenge is increased by the need to control multiple, spatially overlapping, spin ensembles. I will discuss our strategies, simulations and (possibly) experimental demonstrations of quantum control over these highly-coherent, spatially overlapped, systems. |
William Munizzi; William Terrano; Christian Arenz; Keaten Wood; |
| 314 | Optimal Quantum Control of Si/SiGe Spin Qubits in A Quantum Bus Architecture Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the feasibility of performing single qubit operations using optimal quantum control techniques. |
Akshay Menon Pazhedath; Alessandro David; Felix Motzoi; Lars Schreiber; Hendrik Bluhm; Tommaso Calarco; |
| 315 | Robust Driving Scheme for Triggered Solid-State Quantum Light Sources: Notch-filtered Adiabatic Rapid Passage (NARP) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a novel pumping scheme called NARP [3] which utilizes frequency-swept optical pulses containing a spectral hole resonant with the optical transition in the emitter. |
Grant Wilbur; Ali Binai-Motlagh; Alison Clarke; Ajan Ramachandran; Nick Milson; John Healey; Sabine O’Neal; Dennis Deppe; Kimberley Hall; |
| 316 | Quantum State Driving Along Arbitrary Trajectories Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Starting with the quantum brachistochrone problem of the infinitesimal form, we solve the minimal time and corresponding time-dependent Hamiltonian to drive a pure quantum state with limited resources along arbitrary pre-assigned trajectories. |
Le Hu; Andrew Jordan; |
| 317 | Dominique SugnyProfessor of PhysicsLaboratoire Interdisciplinaire Carnot De Bourgogne, Université De Bourgogne9 Av. A. Savaray 21000 Dijon, FranceQuantum Optimal Control in Quantum Technologies Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We apply innovative tools coming from quantum control theory to improve theoretical and experimental techniques in quantum technologies. |
Dominique Sugny; |
| 318 | Tight Speed Limits on Two-qubit Gates in A Fully-connected Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The exact amount of speedup is however hard to quantify. Here we provide a strict upper bound of such speedup on an arbitrary two-qubit gate, for an arbitrary number of qubits involved, and with an arbitrary time-dependent Hamiltonian containing strongly long-range two-body interactions. |
Casey Jameson; Bora Basyildiz; Daniel Moore; Kyle Clark; Zhexuan Gong; |
| 319 | A Classical Hamiltonian Description of The Quantum Brachistochrone Problem Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we show how one can rewrite the problem in the Hamiltonian formulation. |
Savvas Malikis; |
| 320 | Nonlinear Speed-ups in Ultracold Quantum Gases Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, collective effects in many body quantum systems can give rise to effectively nonlinear dynamics. In the present work, we analyze whether and to what extent such nonlinear effects can be exploited to enhance the rate of quantum evolution. |
Sebastian Deffner; |
| 321 | Enhancing Atomic Dark Matter and Gravitational Wave Detectors with Quantum Optimal Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We manage to drive transitions of the 87Sr atoms in simulation with high fidelity and shorter pulse duration by employing the quantum optimal control techniques which increase the robustness and efficiency of driving pulses against nonideal factors by detuning the amplitude and phase instantaneously and constantly in the pulse duration timescale. |
Zilin Chen; Garrett Louie; Timothy Kovachy; Yiping Wang; Tejas Deshpande; |
| 322 | Development of Attosecond Cross-Correlator for Evaluation of High-Harmonic Generation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study we introduce an attosecond cross-correlator system for quantum electrodynamics namely Hyperspectral Attosecond Quantum X-correlator (HAQ-X). |
zairui li; Sergio Carbajo; Wesley Sims; |
| 323 | Co-design of Quantum Devices with Optimal Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we assume this perspective and use optimal control tools to derive the gates required by an algorithm and, in tandem, explore the model space of superconducting quantum computer design to maximize gate fidelity. |
Nicolas Wittler; Shai Machnes; Frank Wilhelm-Mauch; |
| 324 | Error-correction Zoo Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The idea is to have a dedicated up-to-date webpage for each family, collecting original work, related protocols, and real-world implementations. |
Victor Albert; Philippe Faist; |
| 325 | Quantum Key Distribution Over Quantum Repeater Chains Based on The Hexagonal Gottesman-Kitaev-Preskill Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantum communication offers the possibility of generating secure cryptographic key over long distances, but the outstanding challenge is photon loss in optical fibers. |
Debayan Bandyopadhyay; Filip Rozpedek; Liang Jiang; |
| 326 | Passive Two-photon Dissipation for Bit-flip Error Correction of A Cat Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we introduce and experimentally demonstrate a new superconducting circuit designed to correct for bit-flip errors of cat codes. |
Antoine Marquet; Antoine Essig; Nathanael Cottet; Anil Murani; Emanuele Albertinale; Jérémie Guillaud; Theau Peronnin; Sebastion Jezouin; Benjamin Huard; Raphael Lescanne; |
| 327 | Highly Accurate Decoder for Topological Color Codes with Simulated Annealing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose a highly accurate decoding scheme for the color codes using simulated annealing. |
Yugo Takada; Yusaku Takeuchi; Keisuke Fujii; |
| 328 | Logical Majorana Fermions for Fault-Tolerant Quantum Simulation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show how to absorb fermionic quantum simulation’s expensive fermion-to-qubit mapping overhead into the overhead already incurred by surface-code-based fault-tolerant quantum computing. |
B. C. Morrison; Andrew Landahl; |
| 329 | Good Gottesman-Kitaev-Preskill Codes from The NTRU Cryptosystem Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While much research has been dedicated to obtain effective qubits from single-mode systems that are to be integrated into larger qubit-based networks, we argue that this approach is only scratching the surface of the potential quantum computing with the GKP code offers when compared to the more general, lattice theoretic perspective on these code [4, 9, 10]. To demonstrate this, we construct random good GKP codes derived from a cryptographic attack on the NTRU cryptosystem [8] and investigate the decoding problem of these codes. |
Jonathan Conrad; Jens Eisert; Jean-Pierre Seifert; |
| 330 | A Critical Schrodinger Cat Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a critical cat code, where both two-photon dissipation and Kerr nonlinearity operate in a detuned regime. |
Luca Gravina; Fabrizio Minganti; Vincenzo Savona; |
| 331 | Discrete Optimization in The MPS-MPO Language Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Many of these are NP-complete, making exact solutions too hard to find and thus leaving a battle field for different approximate algorithms. In the current study, we show how to marry the formulation of such problems with tensor networks and show relevant examples including decoding of quantum error correcting codes by virtue of approximate MPS-MPO contraction and DMRG-like algorithm. |
Aleksandr Berezutskii; Stefanos Kourtis; Christopher Chubb; |
| 332 | Graph Neural Network Decoders for Stabilizer Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We explore the use of convolutional graph neural networks (GNN) as decoders for error correcting topological stabilizer codes. |
Moritz Lange; Pontus Havstrom; Valdemar Bergentall; Karl Hammar; Olivia Heuts; Basudha Srivastava; Evert van Nieuwenburg; Mats Granath; |
| 333 | Suppressing The Accumulation of Leakage in Superconducting Circuits for Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present experimental progress towards the mitigation of leakage in targeted experiments with superconducting circuits. |
Nathan Lacroix; Luca Hofele; Ants Remm; Christoph Hellings; François Swiadek; Stefania Lazar; Colin Scarato; Dante Colao Zanuz; Michael Kerschbaum; Graham Norris; Mohsen Bahrami Panah; Alexander Flasby; Sebastian Krinner; Andreas Wallraff; |
| 334 | Towards Improving Decoder Performance with Machine Learned Open Quantum System Simulations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We learn noise models from open quantum system simulation software. |
Arshpreet Maan; Vikas Garg; Alexandru Paler; |
| 335 | Decoding Syndrome Measurements in A Distance-three Surface Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a scheme based on the correlation analysis by Spitz et al. [1] to extract physical error probabilites per cycle directly from surface code experiments. |
Sebastian Krinner; Ants Remm; Elie Genois; Nathan Lacroix; Christoph Hellings; Stefania Lazar; François Swiadek; Alexandre Blais; Christopher Eichler; Andreas Wallraff; |
| 336 | Simulation of Error Correction in Atomic Array Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we will present a framework for simulating coherent operations in neutral-atom qubits and discuss the physical errors specific to nuclear spin qubits in alkaline-earth atoms. |
Daniel Crow; |
| 337 | Machine-Learning-Assisted Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work proposes a novel use of quantum hardware efficient QEC codes in conjunction with a QNN to detect, correct, and mitigate complex noise sources. |
Francisco Revson Fernandes Pereira; Martin Leib; |
| 338 | Improving Syndrome Detection Using Quantum Optimal Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Results obtained using our workflow are consistently better than the default pipeline: we find improved error detection success rates which are 2.5 and 3.3 times higher compared to the default approach. |
Gavin Hartnett; Pranav Mundada; Yuval Baum; Ashish Kakkar; Tom Stace; |
| 339 | TLS Loss in Room-temperature-nucleated Alpha-Ta Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We perform a side-by-side comparison of nucleated and non-nucleated films patterned into resonators. |
Loren Alegria; |
| 340 | Microscopic Loss Sources in Alpha-tantalum Superconducting Resonators Grown on Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate the fabrication of alpha-tantalum resonators directly on a silicon wafer over a variety of metal deposition conditions, achieving internal quality factors up to five million at low photon number. |
Daniel Perez; Massimo Mongillo; Xiaoyu Piao; Sebastien Couet; Danny Wan; Yann Canvel; A. M. Vadiraj; Tsvetan Ivanov; Jeroen Verjauw; Rohith Acharya; Jacques Van Damme; Fahd Mohiyaddin; Pallavi Gowda; Antoine Pacco; Bart Raes; Julien Jussot; Joris Van de Vondel; Anton Potocnik; Iuliana Radu; Bogdan Govoreanu; Kristiaan De Greve; Johan Swerts; |
| 341 | Nb Encapsulation Studies for Improved Superconducting Qubit Coherence Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report the results of microwave loss measurements of superconducting transmission line resonators and coherence measurements of transmon qubit devices. |
Mustafa Bal; Francesco Crisa; Shaojiang Zhu; Akshay Murthy; ZuHawn Sung; Jaeyel Lee; Daniel Bafia; David van Zanten; Ivan Nekrashevich; Tanay Roy; Grigory Eremeev; Roman Pilipenko; Florent Lecocq; Michael Vissers; Jose Aumentado; Joel Ullom; Peter Hopkins; Alexander Romanenko; Anna Grassellino; |
| 342 | Nb Surface Encapsulation to Improve Resonators Quality Factor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we present the results obtained on resonators encapsulated with different superconducting materials and the improvement we obtained on the quality factor. |
Francesco Crisa; Mustafa Bal; Shaojiang Zhu; Akshay Murthy; ZuHawn Sung; Jaeyel Lee; Daniel Bafia; David van Zanten; Grigory Eremeev; Ivan Nekrashevich; Roman Pilipenko; Anna Grassellino; Alexander Romanenko; Florent Lecocq; Michael Vissers; Joel Ullom; José Aumentado; Peter Hopkins; Antony McFadden; Corey Rae McRae; David Olaya; |
| 343 | Elemental Semiconductor Encapsulation of Niobium Thin Films for Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: 1 In this study we explore encapsulation of Nb with elemental semiconductor materials. |
Dominic Goronzy; Carlos G Torres Castanedo; Anthony McFadden; Corey Rae McRae; Thang Pham; David Garcia-Wetten; Mitchell Walker; Nikolay Zhelev; Hong Youl Park; Vinayak Dravid; Michael Bedzyk; Mark Hersam; |
| 344 | Improvement of The Superconducting Qubit Lifetime with The Surface Passivation Technology Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present our measurements on the Nb-based superconducting transmon qubits with different surface passivation technologies. |
Shaojiang Zhu; Mustafa Bal; Francesco Crisa; Akshay Murthy; ZuHawn Sung; Jaeyel Lee; Daniel Bafia; David Zanten; Grigory Eremeev; Ivan Nekrashevich; Roman Pilipenko; Anna Grassellino; Alexander Romanenko; Florent Lecocq; Michael Vissers; Joel Ullom; Jose Aumentado; Peter Hopkins; Tanay Roy; |
| 345 | Niobium Hydride Evolution and Phase Equilibrium in Niobium Capping Layers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In the interest of determining possible stable intermediate phases at the interface the CALPHAD method is used to produce ternary phase diagrams for the TiN-O-Nb and Si-O-Nb systems. |
Tyler Leibengood; Graham Pritchard; Peter Voorhees; James Rondinelli; P-C Simon; |
| 346 | Mitigation of Interface Losses in Transmon Qubits Using Hydrofluoric Etches Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we discuss the potential of hydrofluoric etches to remove lossy silicon oxides in close proximity to sensitive circuit elements such as Josephson Junctions, resonators and crossover tethers. |
Michael Gingras; Kyle Serniak; Greg Calusine; David Kim; Alexander Melville; Ali Sabbah; Kate Azar; Wayne Woods; Jeffrey Knecht; Bethany Niedzielski; Cyrus Hirjibehedin; Mollie Schwartz; Jonilyn Yoder; William Oliver; |
| 347 | The Dielectric Dipper: Experimental Comparisons of Common Dielectric Substrates in Isolation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have devised a method for characterizing bulk dielectric loss with a sensitivity on the order of 1e-8. |
Alexander Read; Benjamin Chapman; Luigi Frunzio; Robert Schoelkopf; |
| 348 | Surface Processing of Niobium Cavities for Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we perform an in-depth characterization of the oxidation state and crystallinity, of the niobium oxide as a function of depth and temperature. |
Engin Ciftyürek; Nitzan Kahn; Ofir Milul; Fabien Lafont; Zheshen Li; Serge Rosenblum; |
| 349 | Argon Milling Induced Loss Mechanisms in Superconducting Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we specifically investigate the process of argon milling on niobium and aluminum as a potential coherence limiting process. |
Jacques Van Damme; Anton Potocnik; Kristiaan De Greve; Tsvetan Ivanov; Jeroen Verjauw; Rohith Acharya; Daniel Perez Lozano; Vadiraj Manjunath Ananthapadmanabha Rao; Paola Favia; Massimo Mongillo; Danny Wan; Jo De Boeck; |
| 350 | Reduction of Coherent Losses Using Molecular Self-assembled Monolayers at Interfaces of Superconducting Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will present improvement in quality factor of CPW due to SAM and correlate the results to materials analysis, including TEM, SEM, AFM and XPS, which confirms that SAMs stop the regrowth of oxides and provide sustained improvement in the performance of superconducting quantum circuits. |
Mohammed Alghadeer; AHMED HAJR; Archan Banerjee; Kyunghoon Lee; Hussein Hussein; Hossein Fariborzi; Saleem Rao; Irfan Siddiqi; |
| 351 | Detailed Structural and Chemical Analysis of Amorphous Compounds in Superconducting Qubit Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Specifically, we investigate disordered compounds at the metal/air and metal/substrate interfaces. |
Akshay Murthy; Cameron Kopas; Stephanie Ribet; Josh Mutus; Lin Zhou; Matthew Kramer; Anna Grassellino; Roberto dos Reis; Vinayak Dravid; Alexander Romanenko; |
| 352 | Characterization of Transmon Qubits with Low-loss Parallel Plate Capacitors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: ~ 2×10-6), high reproducibility (<2% over 2" wafer), and allow for a large reduction in footprint relative to traditional co-planar (lateral) capacitors. In this talk we discuss the coherence properties and two-level system (TLS) densities of transmon qubits fabricated with varying degrees of low-loss parallel plate capacitor participation, and the implications for using these types of capacitors in qubits and other superconducting quantum circuits. |
Katrina Sliwa; Alexander Melville; Wayne Woods; Kyle Serniak; Thomas Hazard; Evan Golden; David Kim; Bethany Niedzielski; Michael Gingras; Kaidong Peng; Kevin O’Brien; Jonilyn Yoder; Mollie Schwartz; William Oliver; |
| 353 | Quantum Computation with Hole Spin Qubits in Si and Ge Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Hole spin qubits in silicon and germanium quantum dots are promising platforms for quantum computing because of their large spin-orbit interactions, permitting efficient and ultrafast all-electric qubit control. I will present schemes to optimize the strength of these interactions in different architectures and show how to harness them to enhance the coupling of confined spins to microwave photons. |
Stefano Bosco; |
| 354 | Influence of Charge Noise on Foundry-fabricated Spin Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this context, quantum dots (QDs) formed in CMOS classical electronics offer a path towards scalable quantum computing, by leveraging industrial fabrication foundries [3], and potentially make reliable spin qubits However, fluctuating charge traps in the vicinity of QDs have a strong impact on the characteristic of spin qubits by modifying both their static and dynamical properties. In this context, we present how one can characterize the influence of charge noise on foundry-fabricated devices at low frequency. |
Victor El-Homsy; Bernhard Klemt; Vivien Thiney; Renan Lethiecq; Cameron Spence; Bruna Cardoso-Paz; Emmanuel Chanrion; David Niegemann; Pierre Mortemousque; Baptiste Jadot; Benoit Bertrand; Heimanu Niebojewski; Christopher Bäuerle; Maud Vinet; Yann-Michel Niquet; Tristan Meunier; Matias Urdampilleta; |
| 355 | Si/SiGe Quantum Devices with Full 300mm Process Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, some challenges remain with the SiGe hetero-structure, among which higher trapping density at the upper SiGe interface, crystalline dislocation, low valley-splitting. Leveraging the expertise of the CMOS manufacturing industry, we build a strategy to tackle these challenges with an industry-grade 300mm process line: a process flow with different levels of complexity, identification of the key metrics, and characterization at different temperature scales of metrology structures. |
Clement Godfrin; Asser Elsayed; Mohamed Shehata; Ruoyu Li; George Simion; Stefan Kubicek; Shana Massar; Yann Canvel; Julien Jussot; Roger Loo; Andriy Hikavyy; Massimo Mongillo; Danny Wan; Kristiaan De Greve; |
| 356 | Temperature Scaling of Spin Qubit Performance in Si/SiGe Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the performance of our standard 28Si/SiGe devices [1] as the temperature is increased, a platform yet to be shown at higher temperatures. |
Oriol Pietx-Casas; Eline Raymenants; Brennan Undseth; Lieven Vandersypen; Giordano Scappucci; Mateusz Madzik; Stephan Philips; Sergey Amitonov; Amir Sammak; |
| 357 | Heating Effects and Frequency Shifts in A Six-qubit Si/SiGe Quantum Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Workarounds for small devices, including pre-pulsing with an off-resonant microwave burst to bring a device to a steady-state, wait times prior to measurement, and qubit-specific calibrations all bode ill for device scalability. Here, we make substantial progress in understanding and overcoming this effect. |
Brennan Undseth; Oriol Pietx-Casas; Eline Raymenants; Mohammad Mehmandoost; Mateusz M?dzik; Stephan Philips; Sergey Amitonov; Sander de Snoo; Larysa Tryputen; Amir Sammak; Giordano Scappucci; Lieven Vandersypen; |
| 358 | An Analysis of Spin Orbit Effects on Spin Dependent Tunnel Coupling and G-factor Tuning in Double Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present results obtained with an atomistic tight-binding model and perturbative analysis of the tight-binding wavefunctions to show that the change in g-factor during resonance arises solely from inclusion of the Peierls contribution. In contrast, the other two magnetic field terms, namely, the spin and atomic orbital contributions do not contribute to the resonance behavior of the g-factor or exhibit and other resonance behavior. |
Arthur Lin; Garnett Bryant; |
| 359 | Integrating Si/SiGe Quantum Devices with On-chip Classical Circuitry Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate the operation of an on-chip classical multiplexer on an array of Si/SiGe quantum Hall devices that reduces the I/O connections on the chip by nearly ten fold, with a Rent exponent p = 0. |
Michael Wolfe; Thomas McJunkin; Daniel Ward; Deanna Campbell; Lisa Tracy; Mark Friesen; Mark Eriksson; |
| 360 | Coherent Conveyor Mode Shuttling of Electrons and Their Spin Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present a novel approach named conveyor-mode shuttling, which relies on physically transporting the electron by a propagating wave-potential with simple input signals across an electrostatically defined quantum-channel[2]. |
Tom Struck; Lino Visser; Ran Xue; Hendrik Bluhm; Lars Schreiber; |
| 361 | A Scalable Spin-shuttling Architecture for Si/SiGe-based Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I present an architecture proposal based on shuttling electrons over micron-scale distances [1,2] allowing for beyond next-neighbor coupling, low crosstalk, small operational frequencies and reduced magnetic field gradients, which leads to better coherence. |
Alexander Willmes; Matthias Künne; Harsh Bhardwaj; Max Oberländer; Julian Teske; Ran Xue; Inga Seidler; Eugen Kammerloher; Lars Schreiber; Hendrik Bluhm; |
| 362 | Impact of Phonons on Si/SiGe Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We theoretically investigate how phonons impact the fidelities of semiconductor spin qubit gate operations as a function of several parameters, including temperature, confinement length, and interdot distance. |
Rex Lundgren; Matthew Brooks; Charles Tahan; |
| 363 | Electrostatic Uniformity and Two-dimensional Quantum Dot Arrays in Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work offers a new tool for the tuning of spin qubit devices providing perspectives for the implementation of scalable spin qubit arrays. |
Marcel Meyer; Florian Unseld; Corentin Déprez; Timo van Abswoude; Dingshan Liu; Chien-An Wang; Mateusz M?dzik; Saurabh Karwal; Stefan Oosterhout; Sergey Amitonov; Larysa Tryputen; Francesco Borsoi; Amir Sammak; Nico Hendrickx; Giordano Scappucci; Lieven Vandersypen; Menno Veldhorst; |
| 364 | Characterization of Silicon Based Charge and Spin Qubits in A 22nm Commercial FD-SOI Process Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present our latest measurement results on charge and spin qubits in a double and triple quantum dot structure fabricated in a fully depleted silicon-on-insulator (FD-SOI) process from GlobalFoundries at 3.5K. Based on those results, broader projections and implications on qubit technology and the viability of quantum error correction will be discussed. |
IMRAN BASHIR; Dirk Leipold; Elena Blokhina; Mike Asker; Andrii Sokolov; Conor Mcgeough; Panagiotis Giounanlis; Conor Power; Xutong Wu; Dennis Andrade-Miceli; Eoghan O’Shea; |
| 365 | Semiconducting Qubits with Embedded Control and Readout Cryo-CMOS Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a spin qubit control and measurement platform composed of two cryo-CMOS control and readout circuits, co-integrated with a state-of-the-art Si-MOS quantum chip via 3D-stacking techniques. |
Baptiste Jadot; Marcos Zurita; Gérard Billiot; Yvain Thonnart; Loïck Le Guevel; Mathieu Darnas; Candice Thomas; Jean Charbonnier; Tristan Meunier; Maud Vinet; Franck Badets; Gaël Pillonnet; |
| 366 | Parametric CQED: A New Approach to Realizing Strong Light-matter Interactions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will describe a new framework based on time-dependent strong parametric interactions, a.k.a. parametric cQED, which realizes new and powerful functionalities for in-situ tunable qubit readout and control. |
Zhihao Xiao; Taewan Noh; Emery Doucet; Leonardo Ranzani; Luke Govia; Raymond Simmonds; Jose Aumentado; Archana Kamal; |
| 367 | Observation of Extremely Large Lamb Shift in A Multi-mode Circuit QED System in Deep-strong Coupling Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: If we use the designed qubit energy as reference, we find that the Lamb shift is 99.7% of the bare qubit energy. |
Ziqiao Ao; Sahel Ashhab; Fumiki Yoshihara; Tomoko Fuse; Kosuke Kakuyanagi; Shiro Saito; Takao Aoki; Kouichi Semba; |
| 368 | Measuring A Superconducting Qubit Linearly Decoupled from The Readout Resonator (1/2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, undesired qubit state transition induced by readout photons (the so-called “T1 versus nbar” effect) tends to limit further improvement of readout performance. To overcome this obstacle, we introduce a superconducting artificial molecule that integrates a “dark” transmon qubit and a “bright” meter mode with quartic coupling between each other. |
Wei Dai; Sumeru Hazra; Zhixin Wang; Rodrigo Cortinas; Jayameenakshi Venkatraman; Xu Xiao; Alec Eickbusch; Luigi Frunzio; Michel Devoret; |
| 369 | Measuring A Superconducting Qubit Linearly Decoupled from The Readout Resonator (2/2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, undesired qubit state transition induced by readout photons (the so-called “T1 versus nbar” effect) tends to limit further improvement of readout performance. To overcome this obstacle, we introduce a superconducting artificial molecule that integrates a “dark” transmon qubit and a “bright” meter mode with quartic coupling between each other. |
Sumeru Hazra; Wei Dai; Zhixin Wang; Rodrigo Cortinas; Jayameenakshi Venkatraman; Xu Xiao; Alec Eickbusch; Luigi Frunzio; Michel Devoret; |
| 370 | Measurement-Induced State Transitions in A Superconducting Qubit: Part I, Experiment Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe signatures of resonant transitions between levels in the coupled qubit-resonator system that exhibit noisy behavior when measured repeatedly in time. |
Alexander Opremcak; Mostafa Khezri; Zijun Chen; Andreas Bengtsson; Ted White; Ofer Naaman; Daniel Sank; Alexander Korotkov; |
| 371 | Measurement-Induced State Transitions in A Superconducting Qubit: Part II, Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe signatures of resonant transitions between levels in the coupled qubit-resonator system that exhibit noisy behavior when measured repeatedly in time. |
Mostafa Khezri; Alex Opremcak; Zijun Chen; Andreas Bengtsson; Ted White; Ofer Naaman; Daniel Sank; Alexander Korotkov; |
| 372 | Bolometric Readout of Superconducting Qubits, Part 1/2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently, nanobolometers have been developed that allow the thermal detection of a low number of microwave photons [1,2]. We use such a bolometer in place of a parametric amplifier (paramp) in a dispersive-readout setup to measure the state of a superconducting qubit. |
András Gunyhó; Priyank Singh; Suman Kundu; Jian Ma; Wei Liu; Giacomo Catto; Sakari Niemelä; Qiming Chen; Mikko Möttönen; |
| 373 | Bolometric Readout of Superconducting Qubits, Part 2/2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently, nanobolometers have been developed that allow the thermal detection of a low number of microwave photons [1,2]. We use such a bolometer in place of a parametric amplifier (paramp) in a dispersive-readout setup to measure the state of a superconducting qubit. |
Priyank Singh Singh; András Gunyhó; Suman Kundu; Jian Ma; Wei Liu; Giacomo Catto; Sakari Niemelä; Qiming Chen; Mikko Möttönen; |
| 374 | Measurement of Critical Photon Number of The 2nd Excited State of A Transmon Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We try to obtain the critical photon number of nonlinear behavior and explain how it is determined. |
JeaKyung Choi; Hyeok Hwang; Eunseong Kim; |
| 375 | Exploring Dispersive Qubit Readout in The Strong Driving Limit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we perform a numerical study of the dispersive measurement of superconducting qubits to find the optimal calibration point in the strong driving limit. |
Luciano Pereira; |
| 376 | Novel Wideband Purcell Filters for Circuit QED Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a new design methodology for Purcell filters, which can have compact size, while also maintaining large frequency bandwidths for both qubits and readout resonators — with extensive control over the frequency scaling of readout resonator linewidths. |
Basil Smitham; Christie Chiu; Jeronimo Martinez; Andrew Houck; |
| 377 | Rapid High-fidelity Readout of A Strongly Purcell-filtered Transmon Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we develop a two-stage Purcell filter consisting of an intrinsic Purcell filter [2] and a band-pass Purcell filter [3] to strongly suppress the Purcell effect during the dispersive readout of a transmon qubit. |
Yoshiki Sunada; Shuhei Tamate; Peter Spring; Arjan Van Loo; Jesper Ilves; Shingo Kono; Yasunobu Nakamura; |
| 378 | Enhancing The Dispersive Interaction Between A Qubit and Squeezed Photons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work initiates the experimental coupling of Bogoliubov oscillators to qubits, and cautiously motivates their dissemination in experimental platforms seeking enhanced interactions. |
Marius Villiers; Clarke Smith; Alexandru Petrescu; Alvise Borgognoni; Matthieu Delbecq; Alain Sarlette; Mazyar Mirrahimi; Philippe Campagne-Ibarcq; Takis Kontos; Zaki Leghtas; |
| 379 | Demonstration of Algorithmic Quantum Speedup Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Despite the development of increasingly capable quantum computers (QCs), an experimental demonstration of a provable algorithmic quantum speedup employing today’s non-fault-tolerant, noisy intermediate-scale quantum (NISQ) devices has remained elusive. Here, we unequivocally demonstrate such a speedup, quantified in terms of the scaling with the problem size of the time-to-solution metric. |
Bibek Pokharel; Daniel Lidar; |
| 380 | Polynomial-time Experimental Protocol for Observation of Measurement-induced Entanglement Phase Transition Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present an experimental algorithm that scales polynomially with the number of qubits, allowing us to observe and measure the transition on available NISQ devices. |
Yariv Yanay; Charles Tahan; |
| 381 | Experimental Observation of Measurement Induced Phase Transitions Using Linear Cross-entropy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This new protocol removes the underlying exponential scaling of the tomography, allowing experiments to probe larger system sizes. We implemented this protocol on IBM’s quantum hardware and have experimentally observed indications of a measurement-induced phase transition. |
Hirsh Kamakari; Jonathan Thio; Yaodong Li; Jin Ming Koh; Matthew Fisher; Austin Minnich; |
| 382 | Quantum-enhanced Markov Chain Monte Carlo Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we introduce a quantum algorithm to sample from distributions that pose a bottleneck in several applications, which we implement on an IBM superconducting quantum processor. |
David Layden; |
| 383 | Qubit Vitrification and Entanglement Criticality on A Quantum Simulator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we will show that consecutive measurements of qubits in a simulator can lead to criticality, separating two phases of entanglement. |
Jeremy Côté; Stefanos Kourtis; |
| 384 | Using Measurements to Reduce Circuit Depth: Deterministic Preparation of The AKLT State in Constant-time on An IBM Quantum Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, because the AKLT state has a nonzero correlation length, its exact unitary preparation requires a circuit whose depth scales linearly with system size. In this talk, we show how to overcome this limitation by augmenting a finite-depth circuit with measurements, and ultimately present a recipe to prepare the spin-1 AKLT state in constant-time. |
Kevin Smith; Eleanor Crane; Nathan Wiebe; Steven Girvin; |
| 385 | State Perperation on Quantum Computers Via Quantum Steering Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate a novel approach for state preparation on quantum computers through measurement-induced quantum steering. |
Daniel Volya; |
| 386 | Quantum State Preparation on A Superconducting Qubit Lattice Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will discuss applications of near-term quantum algorithms to preparing interesting condensed matter states on a superconducting quantum processor. |
Sarah Muschinske; Miguel Moreira; Ilan Rosen; Kasper Poulsen; Amir Karamlou; Cora Barrett; Patrick Harrington; Thomas Hazard; Mollie Schwartz; Jonilyn Yoder; Simon Gustavsson; Jeffrey Grover; Kyle Serniak; Norm Tubman; William Oliver; |
| 387 | Implementing Lattice Gauge Theories on Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work showcases the dramatic restriction that the underlying gauge constraint imposes on the dynamics of an LGT, it illustrates how gauge constraints can be modified and protected, and it paves the way for studying other models governed by many-body interactions. |
Julius Mildenberger; Wojtek Mruczkiewicz; Jad Halimeh; Zhang Jiang; Philipp Hauke; |
| 388 | Spectroscopy of Ising Mesons on A Noisy Digital Quantum Simulator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A central question in the current quantum era is: what non-perturbative QFT problems can be tackled with the Noisy Intermediate Scale Quantum (NISQ) machines? In this work, we provide an explicit example to this question by using a noisy IBM digital quantum simulator to compute the meson mass spectrum of 1+1D quantum Ising model with transverse and longitudinal fields. |
Christopher Lamb; Robert Davis; Yicheng Tang; Ananda Roy; |
| 389 | Quantum Neuronal Sensing on A 61-Qubit NISQ Superconducting Processor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a new approach called “quantum neuronal sensing” that combines the computational power of QNNs with quantum sensing. |
William Munro; Ming Gong; He-Liang Huang; Shiyu Wang; Chu Guo; Shaowei Li; Yulin Wu; Qingling Zhu; Youwei Zhao; Shaojun Guo; Haoran Qian; Yangsen Ye; Chen Zha; Fusheng Chen; Chong Ying; Jiale Yu; Daojin Fan; Akitada Sakurai; Kae Nemoto; Yong-Heng Huo; Chao-Yang Lu; Cheng-Zhi Peng; Xiaobo Zhu; Jian-Wei Pan; |
| 390 | Hidden Inverse Mitigation Protocol in Superconducting Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present a method to improve the convergence of variational algorithms based on hidden inverses to mitigate coherent errors. |
Vicente Leyton Ortega; Swarnadeep Majumder; Raphael Pooser; |
| 391 | Analyzing Quantum Error Detecting Codes Using QUBO Formalism Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Finding the hamming distance for codes is a hard problem, here we show how to map the problem to a QUBO which may then be solved on a quantum computer. |
Refat Ismail; |
| 392 | A Novel Non-Gaussianity Measure Based on The Wigner Entropy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In attempts to circumvent these difficulties, several works have introduced non-Gaussianity measures, i.e., quantities that assign a real number to states depending on their non-Gaussian content (Genoni et al., 2007, 2008). Based on the Wigner entropy (Van Herstraeten & Cerf, 2021), we introduce a new measure μ[W], which is the Wigner relative entropy between an arbitrary N-mode state and its Gaussian associate defined as μ[W]= ∫ dNq dNp W(q, p) [ln W(q, p) – lnW G(q, p)]. |
Andrew Pizzimenti; Christos Gagatsos; Prajit Dhara; Zacharie Van Herstraeten; Sijie Cheng; |
| 393 | Quantum F-Divergences Via Nussbaum-Szkola Distributions with Applications to Gaussian States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We generalize the Nussbaum and Szkola distributions [Ann. |
George Androulakis; Tiju Cherian John; |
| 394 | Understanding Quantum Supremacy Conditions for Gaussian Boson Sampling with High Performance Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop a graphical processing unit-accelerated algorithm and increase the algorithm parallelism to exploit high-performance computing resources, reducing the time-to-solution significantly. |
Minzhao Liu; Changhun Oh; Junyu Liu; Liang Jiang; Yuri Alexeev; |
| 395 | Page Curves and Typical Entanglement in Linear Optics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our main proofs make use of a symmetry property obeyed by the average and the variance of the entropy that dramatically simplifies the averaging over unitaries. In this light, we propose future research directions where this symmetry might also be exploited. |
Joseph Iosue; Adam Ehrenberg; Dominik Hangleiter; Abhinav Deshpande; Alexey Gorshkov; |
| 396 | Multimode and Experimental Continuous Variable Shadow Tomography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Earlier, we extended this framework to continuous-variable (CV) quantum systems, such as optical modes and harmonic oscillators. |
Srilekha Gandhari; Victor Albert; Thomas Gerrits; Jacob Taylor; Michael Gullans; |
| 397 | Design-based Continuous Variable Shadow Tomography Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose an alternative definition for CV state designs, which we call rigged $t$-designs, and provide explicit constructions for $t = 2$. |
Joseph Iosue; Kunal Sharma; Michael Gullans; Victor Albert; |
| 398 | Coherent-state Quantum Process Tomography of Continuous-variable Gates in Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we perform coherent state quantum process tomography (cs-QPT) for a continuous-variable superconducting circuit. |
Mikael Kervinen; Marina Kudra; Ahmed Shahnawaz; Axel Eriksson; Fernando Quijandría; Anton Kockum; Per Delsing; Simone Gasparinetti; |
| 399 | Multipartite Continuous-variable Entanglement Generation Using Josephson Metamaterials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a method for high-quality generation and control of entanglement between microwaves in multiple frequency ranges. |
Michael Perelshtein; |
| 400 | Quantum Approximate Optimization Algorithm with Kerr Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The Quantum Approximate Optimization Algorithm (QAOA)—one of the leading algorithms for applications on intermediate-scale quantum processors—is designed to provide approximate solutions to combinatorial optimization problems with shallow quantum circuits. |
Pontus Vikstål; |
| 401 | Quantum Non-Gaussian Light and Motion Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The talk will report our recent theoretical and experimental achievements opening the door to highly non-Gaussian quantum physics with light and mechanical oscillators needed for quantum computation with continuous variables. |
Radim Filip; |
| 402 | A Physical Graph Representation of Quantum Optics Experiments Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we will talk about a highly advanced connection between graph theory and quantum experiments which goes beyond the original representation, by showing that a colored weighted graph can capture all the information of a quantum optical experiment [4,5]. |
Xuemei Gu; Sören Arlt; Carlos Ruiz Gonzalez; Mario Krenn; |
| 403 | Superconducting Parametric Cavity As An Analog Quantum Simulator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Thus, we successfully simulated the bosonic Creutz ladder [1] and now we demonstrate the simulation of the Su-Schrieffer–Heeger (SSH) model, both of which are paradigmatic topological models. |
Dmytro Dubyna; Jamal Busnaina; Zheng Shi; Jimmy Shih-Chun Hung; Ibrahim Nsanzineza; Christopher Wilson; |
| 404 | Probabilistic Error Cancellation with Sparse Pauli-Lindblad Models on Noisy Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: One major challenge for PEC has been to find a noise model that is scalable in the number of qubits, that can capture correlated noise and that can be efficiently learned and manipulated. In this talk we present a Pauli-Lindblad noise model that simultaneously satisfies all these criteria. |
Ewout van den Berg; Zlatko Minev; Abhinav Kandala; Kristan Temme; |
| 405 | From Error Suppression to Error Mitigation in Quantum Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quite a few tools have been developed for this task, under the names of error suppression and error mitigation. In this talk I will introduce the error suppression and mitigation software developed at QEDMA Quantum Computing, and present experimental demonstrations of significant improvements in performance achieved when applying this software to several quantum algorithms and devices. |
Dorit Aharonov; |
| 406 | Characterizing The Ultimate Potential and Limitations of Quantum Error Mitigation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will introduce universal performance bounds applicable to general error-mitigation protocols, which provide an effective platform to discuss the optimality of specific mitigation methods among a general class. |
Ryuji Takagi; |
| 407 | The Learnability of Pauli Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we give a precise characterization about the learnability of Pauli noise associated with Clifford gates using graph theoretical tools, showing that the learnable information corresponds exactly to the cycle space of the pattern transfer graph of a given gate set. |
Senrui Chen; Yunchao Liu; Matthew Otten; Alireza Seif; Bill Fefferman; Liang Jiang; |
| 408 | Harnessing Multimode Nonlinearity for Quantum State Measurement Using Quantum Reservoir Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we show how the quantum nonlinearity of quantum devices – referred to as quantum reservoirs – can in fact be harnessed as a resource in measurement chains for resource-efficient processing of quantum signals. |
Saeed Khan; Fangjun Hu; Gerry Angelatos; Michael Hatridge; Hakan Tureci; |
| 409 | Investigating Trainability of Parameters in The Snap-Displacement Protocol of A Qudit System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We analyze optimization problems caused by the multi-modal nature of the cost function which leads to trapping in points of the local minima and we investigate whether the SNAP and displacement protocol has the barren plateau problem. |
Oluwadara Ogunkoya; Doga Kurkcuoglu; Kirsten Morris; Jasmine Panthee; |
| 410 | Hopfield Neural Network Implementation with 3-SAT and Grover’s Algorithm Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The objective of this work is to explore quantum computing methods to increase the computational speed of Hopfield Neural Network (HNN) in detection of a radioactive anomaly. |
Luis Valdez; Alexander Heifetz; Miltiadis Alamaniotis; |
| 411 | Solving Optimization Problems with Continuous Variables Within The Generator-Enhanced Optimization Framework Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently, the Generator-Enhanced Optimization (GEO) framework [arXiv:2101.06250v2] has been proposed to solve combinatorial optimization problems, leveraging classical, quantum, quantum-inspired or hybrid generative models to generate solutions to such problems. |
Vladimir Vargas-Calderón; Yudong Cao; Alejandro Perdomo-Ortiz; |
| 412 | Quantum Reservoir Computing Approach to Error-Mitigated Compilation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the implementation of reservoir-computing (RC) models in superconducting quantum processing architectures. |
Davide Venturelli; Doga Kurkcuoglu; Nischay Suri; Silvia Zorzetti; Alessandro Berti; |
| 413 | An Analog Quantum Variational Embedding Classifier Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a quantum variational embedding classifier based on an analog quantum computer, where control signals vary continuously: our particular focus is implementation with quantum annealers. |
Rui Yang; Samuel Bosch; Bobak Kiani; Seth Lloyd; Adrian Lupascu; |
| 414 | Handling Privacy-sensitive Clinical Data with Federated Quantum Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we proposed a novel framework to train quantum convolutional neural networks in federated learning settings that allows the implementation of decentralized quantum learning. |
Amandeep Bhatia; Sabre Kais; Muhammad Alam; |
| 415 | Adiabatic Quantum Linear Regression Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present an adiabatic quantum computing approach for training a linear regression model. |
Prasanna Date; |
| 416 | Quantum Classical Algorithm for Solving The Hubbard Model Via The Dynamical Mean-field Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work provides an exciting application of small-scale quantum devices feasible with near-future technology. |
Anshumitra Baul; Juana Moreno; Ka Ming Tam; |
| 417 | Digital Quantum Simulation of Floquet Symmetry-protected Topological Phases Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report the observation of a distinct type of non-equilibrium state of matter, Floquet symmetry- protected topological phases, which are implemented through digital quantum simulation with an array of programmable superconducting qubits. |
Wenjie Jiang; |
| 418 | Iteratively-Layered Variational Quantum Eigensolver with Shallow Ansatz Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the Iteratively Layered VQE (IL-VQE) Algorithm. |
Christopher Long; |
| 419 | Entanglement Detection with Deep Neural Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will discuss how we can train neural networks to detect and classify entangled systems from a training set. |
Daniel Manzano; |
| 420 | Elivagar: Resource-efficient Quantum Circuit Architecture Search Guided By Quantum Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present Elivagar, a resource-efficient, noise-guided Quqntu framework. |
Yunong Shi; Sashwat Anagolum; |
| 421 | VQE-generated Dataset for Machine Learning with Possible Quantum Advantage Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we propose the problem of clustering quantum circuits generated by variational quantum eigensolver (VQE) trained on different classes of Hamiltonians. |
Akimoto Nakayama; Leonardo Placidi; Kosuke Mitarai; Keisuke Fujii; |
| 422 | Generative Modeling with Quantum Neurons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Due to the linearity of quantum mechanics, it remains a challenge to design quantum generative machine learning models that embed non-linear activations into the evolution of the statevector. |
Kaitlin Gili; Mykolas Sveistrys; Rohan Kumar; Aliza Siddiqui; Chris Ballance; |
| 423 | Weak Measurement Feedback and Zeno Pinning for Remote Entanglement Generation and Stabilization in Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present simulations of a weak measurement feedback protocol for remotely generating and stabilizing entanglement between two qubits. |
Sacha Greenfield; Leigh Martin; Felix Motzoi; Birgitta Whaley; Justin Dressel; Eli Levenson-Falk; |
| 424 | Noise Suppression in Superconducting Qubits Through On-demand Cavity Cooling and Optimal Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While control techniques such as dynamical decoupling have been widely adopted in compiling circuits to run quantum algorithms, so far, few experimental studies have co-designed a qubit’s control pulses with its dissipative environment. We design a transmon qubit with an effective tunable environment by coupling its readout resonator to an auxiliary lossy mode. |
Haimeng Zhang; Darian Hartsell; Evangelos Vlachos; Sacha Greenfield; Azarin Zarassi; Vivek Maurya; Clark Miyamoto; Jocelyn Liu; James Farmer; Daria Kowsari; Kater Murch; Daniel Lidar; Eli Levenson-Falk; |
| 425 | Efficient Superconducting Qubit Measurement with An Integrated Nonreciprocal Amplifier Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we discuss the operation of an integrated system combining a transmon qubit, a readout cavity and a nonreciprocal amplifier in a 3D structure. |
Benton Miller; Florent Lecocq; Bradley Hauer; Katarina Cicak; Raymond Simmonds; John Teufel; Jose Aumentado; |
| 426 | Passive Superconducting Circulator on A Chip Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report the first proof-of-principle realisation of a passive on-chip circulator which is made from a superconducting loop interrupted by three notionally-identical Josephson junctions and is tuned with only DC control fields. |
Arkady Fedorov; |
| 427 | Passive On-chip Microwave Circulator Based on A Josephson Ring Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a passive on-chip microwave circulator based on a Josephson ring circuit. |
Yutaka Takeda; Yutaka Tabuchi; Shuhei Tamate; Shumpei Masuda; Shingo Kono; Yasunobu Nakamura; |
| 428 | Unbounded Deterministic Entanglement Generation By Autonomous Quantum Measurement and Feedforward Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a class of dissipative protocols, based on autonomous quantum measurement and feedforward, where the entanglement generation is deterministic, and can even grow indefinitely with evolution time in bosonic systems. |
Yuxin Wang; Alireza Seif; Aashish Clerk; |
| 429 | Dispersive Non-reciprocity Between A Qubit and A Cavity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we explore non-reciprocity between off-resonant quantum modes by presenting an experimental study of a non-reciprocal dispersive-type interaction between a transmon qubit and a superconducting cavity, arising from dissipative intermediary modes with broken time reversal symmetry. |
Yingying Wang; Yuxin Wang; Sean van Geldern; Thomas Connolly; Aashish Clerk; Chen Wang; |
| 430 | Driven-dissipative Dynamics in Superconducting Circuit Lattice Coupled to Tunable Baths Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we developed a hardware-efficient approach to engineer tunable local baths, using parametrically-enabled coupling between qubits and their readout resonators which serve as reservoirs. |
Botao Du; Ramya Suresh; Qihao Guo; Ruichao Ma; |
| 431 | Dissipative Preparation and Stabilization of Quantum States in Superconducting Qutrit Chains Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we propose a driven-dissipative protocol to stabilize the Affleck-Kennedy-Lieb-Tasaki (AKLT) state, a prototypical example for matrix product states and symmetry protected topological states, in a chain of superconducting qutrits. |
Yunzhao Wang; Kyrylo Snizhko; alessandro romito; Yuval Gefen; Kater Murch; |
| 432 | Dissipative Pairing Interactions: Quantum Instabilities, Topological Light, and Volume-Law Entanglement Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we instead study the physics of dissipative pairing interactions in a fully quantum setting. |
Andrew Pocklington; Yuxin Wang; Aashish Clerk; |
| 433 | Toward Quantum-Enhanced Interferometric Telescopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use spontaneous parametric down-conversion to produce two photons in different paths that represent our "astronomical" and "terrestrial" source. |
David Diaz; Yujie Zhang; Yunkai Wang; Virginia Lorenz; Paul Kwiat; |
| 434 | Quantum Precision Limits of Displacement Noise Free Interferometers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a triangular cavity DFI scheme and apply our general bounds to it. |
Rajashik Tarafder; Tuvia Gefen; rana adhikari; Yanbei Chen; |
| 435 | Optimized Multiphoton Absorption Measurements in Nonlinear Interferometers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our study, we investigate the precision of the cross-section measurements of multiphoton absorption with a nonlinear interferometer. |
Shahram Panahiyan; Maria Chekhova; Frank Schlawin; Carlos Muñoz; |
| 436 | Modeling of Cascaded Phase Sensing in Optical Fiber Using Squeezed Light Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a layout for squeezing-enhanced multiparameter phase sensing in optical fibers. |
Gregory Krueper; Lior Cohen; Joshua Combes; Juliet Gopinath; Robert Mellors; Stephen Libby; Michael Messerly; |
| 437 | Estimating Optical Frequency Difference Using Optimized Coherent Detection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To that end, we theoretically and experimentally investigate the quantum limit for two tasks of interest when we are measuring the spectral properties of two similar photon-starved optical signals with overlapping spectra. |
Jonathan Habif; Federico Spedalieri; Aidan McCall; |
| 438 | Using Frequency Combs to Connect Homodyne and Heterodyne Detection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will relax the assumption that the local oscillator is CW and instead investigate the possibilities of a frequency comb LO. To do this we must create a fully time-dependent treatment of homodyne detection. |
NOAH LORDI; |
| 439 | Silicon Vacancy Centers in Diamond for Quantum Sensing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report a robust way to prepare shallow implanted SiV – in diamond parabolic reflectors (PR) [1] with narrow lines. |
Minghao Li; Josh Zuber; Zi-Huai Zhang; Marietta Batzer; Marcel.li Grimau; Jodok Happacher; Brendan Shields; Nathalie de Leon; Patrick Maletinsky; |
| 440 | Single-spin Readout Using Optomechanically Induced Transparency: Application to Readout of Silicon-vacancy Defects in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we show that strain coupling can also be used as a resource to implement single-shot high-fidelity readout of a solid-state spin defect in a hybrid optomechanical system. |
Martin Koppenhoefer; Carl Padgett; Jeffrey Cady; Viraj Dharod; Hyunseok Oh; Ania Bleszynski Jayich; Aashish Clerk; |
| 441 | Greatly Enhanced Emission from Spin Defects in Hexagonal Boron Nitride Enabled By A Low-Loss Plasmonic Nano-Cavity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate 1685-times enhancement of photoluminescence (PL) intensity by coupling the defects with nano-plasmonic cavities. |
Abhishek Bharatbhai Solanki; Xiaohui Xu; Demid Sychev; Xingyu Gao; Samuel Peana; Aleksandr Baburin; Karthik Pagadala; Zachariah Martin; Sarah Nahar Chowdhury; Yong Chen; Takashi Taniguchi; Kenji Watanabe; Ilya Rodionov; Alexander Kildishev; Tongcang Li; Pramey Upadhyaya; Alexandra Boltasseva; Vladimir Shalaev; |
| 442 | Wide Field Imaging of Intrinsic Spin Fluctuations in Van Der Waals Ferromagnet By Spin Defects in Hexagonal Boron Nitride Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Taking advantage of boron vacancy spin defects in hBN, here we report nanoscale quantum imaging of low-dimensional ferromagnetism sustained in Fe 3GeTe 2/hBN van der Waals heterostructures. |
Mengqi Huang; Jingcheng Zhou; Di Chen; Hanyi Lu; Nathan McLaughlin; Senlei Li; Mohammed Alghamdi; Dziga Djugba; Jing Shi; Hailong Wang; Chunhui Du; |
| 443 | Silicon Vacancy Center Based Magnetometry in Isotopically Purified 4H-SiC Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we report on the improved sensitivity of a magnetic sensor system utilizing an ensemble of silicon vacancies in silicon carbide due to isotopic purification of the host crystal. |
Ignas Lekavicius; Samuel Carter; Daniel Pennachio; Jenifer Hajzus; Samuel White; Andrew Purdy; D. Kurt Gaskill; Andrew Yeats; Rachael Myers-Ward; |
| 444 | Nanomechanical Lithium Niobate on Silicon Resonators for Single Molecule Sensing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate the transduction of GHz silicon nanomechanical resonators via mechanical coupling to a thin-film lithium niobate (LN) mode. |
Matthew Maksymowych; Oliver Hitchcock; Sultan Malik; Wentao Jiang; Felix Mayor; Amir Safavi-Naeini; |
| 445 | Project Mjolnir: High Efficiency Real Time Mass Separator and Ion Trap for Thorium-229 Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Mjolnir has been developed over the course of nearly a decade of research searching for the Thorium-229m isomer’s exact energy. The isomer is of high interest as it could … |
Jason Harke; Barbara Alan; Aaron Hellinger; Aaron Tamashiro; Jeremias Garcia-Duarte; Yonatan Mishnayot; William Dunn; |
| 446 | Wide Field Imaging of Low-dimensional Magnetism By 2D Spin Defects Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we report nanoscale quantum sensing and imaging of exfoliated 2D ferromagnet Fe 3GeTe 2 flakes by boron vacancy spin defects in an adjacent hexagonal boron nitride capping layer. |
Jingcheng Zhou; Mengqi Huang; Di Chen; Hanyi Lu; Nathan McLaughlin; Senlei Li; Mohammed Alghamdi; Dziga Djugba; Jing Shi; Hailong Wang; Chunhui Du; |
| 447 | High-throughput Search Reveals Spin Defects in CaO Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: These defects are verified by additional quantum embedding simulations [3]. In this presentation, we explore these defects in detail and show that CaO is an emerging material for quantum applications. |
Joel Davidsson; Christian Vorwerk; Giulia Galli; |
| 448 | Topological Order Subject to Local Errors I: A Systematic Study of Error-induced Phases Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The encoded information can be protected using a specific quantum error correction algorithm up to a finite error threshold. In this talk, we show the mixed state describing topologically ordered states corrupted by local errors can exhibit distinct phases characterized by its capability to encode information. |
Yimu Bao; Ruihua Fan; Ashvin Vishwanath; Ehud Altman; |
| 449 | Topological Order Subject to Local Errors II: Diagnostics of Error-induced Phases Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The capability of encoding information defines distinct error-induced phases. In this talk, we propose three complementary information-theoretic diagnostics of such phases intrinsic to the corrupted mixed state: (1) quantum relative entropy between an error-corrupted ground state and excited state; (2) coherent quantum information; (3) topological entanglement negativity. |
Yimu Bao; Ruihua Fan; Ehud Altman; Ashvin Vishwanath; |
| 450 | Recovery With Incomplete Knowledge: Fundamental Bounds on Real-Time Quantum Memories Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This necessitates the use of a “spectator” system, which makes an estimate of the noise parameter in real time, then feeds the outcome back to the recovery protocol as a classical side-information. In this article, I present information-theoretic bounds on the performance of such a spectator-based recovery. |
Arshag Danageozian; |
| 451 | Quantum Error-Correction Properties of Hyperinvariant Tensor Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that the original construction is generalizable using the quantum Fourier transform and k-Uniform maximally-entangled quantum states. |
Matthew Steinberg; |
| 452 | Error-correcting Codes for Fermionic Quantum Simulation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We provide ways to simulate fermions by qubits on 2d lattices using $mathbb{Z}_2$ gauge theories (stabilizer codes). |
Yu-An Chen; Yijia Xu; Alexey Gorshkov; |
| 453 | Measurement-free Quantum Error Correction for Gaussian Noise Using Gottesman-Kitaev-Preskill States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In particular, we propose a measurement-free bosonic quantum error correction (QEC) scheme and a measurement-free bosonic quantum error distillation (QED) scheme to reduce the number of required GKP states and the required squeezing ability. |
En-Jui Chang; Ching-Yi Lai; |
| 454 | Optimized Four-qubit Quantum Error Correcting Code for Amplitude Damping Channel Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We solve the biconvex optimization by the technique of alternating semi-definite programming and identify a new four-qubit code for amplitude damping channel, one major noise in superconducting circuits and a good model for spontaneous emission and energy dissipation. |
Xuanhui Mao; Qian Xu; Liang Jiang; |
| 455 | Stability of K-local Phases of Matter Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we relax the assumption about the existence of an underlying Euclidean geometry and ask whether k-local Hamiltonians associated to (not necessarily geometric) qLDPC error correcting codes are robust against local noise, where locality of noise is now defined with respect to the interaction graph. |
Ali Lavasani; Michael Gullans; Victor Albert; Maissam Barkeshli; |
| 456 | Continuous Quantum Error Correction on Non-Markovian Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work starts with a one-qubit system being maintained in a particular state against noise. |
Juan Garcia Nila; |
| 457 | Quantum Phase Diagram of The Three-dimensional Subsystem Toric Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In the sector with no stabilizer violations, we show that the effective Hamiltonian describes two copies of decoupled 3d Z2 lattice gauge theories, where the stabilizer constraints act as local gauge invariance. |
Yaodong Li; Curt von Keyserlingk; Guanyu Zhu; Tomas Jochym-O’Connor; |
| 458 | Candidate for A Passively Protected Quantum Memory in Two Dimensions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a new model which appears to passively correct against both bit-flip and phase-flip errors in two dimensions: A square lattice composed of photonic “cat qubits” coupled via dissipative terms which tend to fix errors locally. |
Simon Lieu; Yu-Jie Liu; Alexey Gorshkov; |
| 459 | Evaluating Surface Code Schemes for Neutral Atom Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a novel embedding of surface code qubits into small clusters to exploit unique neutral atom properties such as long-distance interactions and flexible atom positioning which enables transversal CNOT gates. |
Joshua Viszlai; Jonathan Baker; Frederic Chong; |
| 460 | Algorithmic-level Error Correction: Arbitrarily Accurate Recovery Of Noisy Quantum Signal Processing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Remarkably, modern classical computers almost completely eschew such fine-grained error correction, and in their place employ strategies which correct errors at the level of algorithms and protocols. Here we introduce the concept of algorithm-level error correction (ALEC) for quantum information processing, the defining feature of which is the design of subroutines that allow gate-level errors to cancel; therefore requiring a sophisticated understanding of how gate-level errors propagate to the output of algorithms. |
Andrew Tan; Yuan Liu; Minh Tran; Isaac Chuang; |
| 461 | Surface Code Error Correction in A Modular Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider error correction in a quantum computer formed by planar modules connected along the edges, assuming that error probability for two-qubit gates across the boundary be larger than that for intra-modular gates. |
Denis Sedov; Renyu Wang; Leonid Pryadko; |
| 462 | Hole Spin Qubit in Silicon: Enhanced Coherence and Coherent Coupling to Microwave Photons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: First, we will demonstrate how SOI turns into an asset to engineer mixed spin-charge states in a double quantum dot able to couple strongly with microwave photons. In an hybrid spin cQED platform, we find a hole spin-photon coupling of 300 MHz associated to a cooperativity above 10 3 [4]. |
Romain Maurand; |
| 463 | Electronic Transport in Atomically Precise Semiconductor Tunnel Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we combine atomic precision patterning using STM lithography with tight-binding Non-equilibrium Green’s Functions (TB-NEGF) modelling to describe the dependence of tunnelling on junction length in monolayer degenerately phosphorus doped silicon tunnel junctions. |
Matthew Donnelly; Mushita Munia; Joris Keizer; Yousun Chung; A Saffat-Ee Huq; Edyta Osika; Yuling Hsueh; Rajib Rahman; Michelle Simmons; |
| 464 | Machine Assisted Classification of Multi-donor Clusters Using Scanning Tunnelling Microscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The results presented in this paper provide a unique means to understand the chemical dissociation pathways for hydrogen lithography and constitute an important milestone in automating the fabrication of quantum devices for computation and sensing applications. |
Sam Sutherland; |
| 465 | Magnetotransport in The Quantum Wires Comprised of Vertically Stacked Quantum Dots: A Calling for Themagnetoplasmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on a periodic system of vertically stacked InAs/GaAs quantum dots (VSQD) subjected to a two-dimensional confining harmonic potential and a magnetic field in the symmetric gauge. |
Manvir Kushwaha; |
| 466 | Analog Quantum Simulation of The Dynamics of Open Quantum Systems with Quantum Dots and Microelectronic Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a general setup for the analog quantum simulation of the dynamics of open quantum systems based on semiconductor quantum dots electrically connected to a chain of quantum RLC electronic circuits. |
Ignacio Franco; John Nichol; Andrew Jordan; Chang Woo Kim; |
| 467 | Jellybean Quantum Dots in Silicon for Qubit Coupling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we will report on the charge and spin characteristics of an elongated quantum dot – a so-called jellybean quantum dot – for the prospects of acting as a qubit-qubit coupler. |
Arne Laucht; Zeheng Wang; Santiago Serrano; MengKe Feng; William Gilbert; Ross Leon; Tuomo Tanttu; Philip Mai; Dylan Liang; Jonathan Huang; Yue Su; Wee Han Lim; Fay Hudson; Christopher Escott; Andrea Morello; Chih-Hwan Yang; Andrew Dzurak; Andre Saraiva; |
| 468 | Si/SiGe Qubit Devices Enabled By Advanced Semiconductor Fabrication Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Intel’s Components Research and Intel Labs organizations have recently demonstrated the industry’s highest reported yield (95%) and uniformity to date of silicon spin qubit devices. These devices are fabricated on a planar Si/SiGe heterostructure with extreme ultraviolet (EUV) lithography utilizing Intel’s advanced 300mm transistor research and development facility. |
Eric Henry; |
| 469 | Reduced Plasma Oxidation in Metal Single Electron Transistors for Increased Bandwidth Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Plasma oxidation parameters used to form the tunnel barriers in aluminum based single electron transistors (SETs) are varied to reduce the resistance-area (RA) product, thereby … |
Runze Li; Pradeep Namboodiri; Yanxue Hong; Dmitri Krymski; Joshua Pomeroy; |
| 470 | Characterizing Charged Defects in Oxide-on-Silicon Using Kelvin Probe Force Microscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To characterize the microscopic origin of charge noise in the gate oxide, we perform Kelvin Probe Force Microscopy (KPFM) measurements on an aluminum oxide layer grown by ALD atop bulk silicon. |
Leah Tom; Zachary Krebs; Emily Joseph; Keith Ray; Vincenzo Lordi; Mark Eriksson; Victor Brar; Susan Coppersmith; Mark Friesen; |
| 471 | Reducing Tuning Complexity in Top Gated Semiconductor Quantum Dot Qubits with Single-nm-resolution Gate Fabrication Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using finite elements, QTCAD enables the solution of non-linear Poisson and Schrödinger equations for quantum-dot systems with arbitrary 3D geometry. |
James Owen; Felix Beaudoin; John Randall; |
| 472 | Quantum Simulating Floating Phase and S = ½ Critical Behavior with S = 1 Spin Centers with Anisotropy in Solid-state Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a novel platform for creating quantum simulators by implanting S = 1 spin centers in solid-state materials. |
Troy Losey; Denis Candido; Yannick Meurice; Michael Flatté; Shan-Wen Tsai; Jin Zhang; |
| 473 | Global Coherent Spin Control of A SiMOS Spin Qubit Using A 3D KTaO3 Dielectric Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we will present our latest results on KTaO3 global spin control using a modified SiMOS spin qubit design with an optimised Al/thermally grown AlOx gate stack. |
Nard Dumoulin Stuyck; Ensar Vahapoglu; James Slack-Smith; Wee Han Lim; Fay Hudson; Tom Day; Tuomo Tanttu; Henry Yang; Andre Saraiva; Kohei Itoh; Arne Laucht; Andrew Dzurak; Jarryd Pla; |
| 474 | Quantum Simulations of The Su–Schrieffer–Heeger Model in P-doped Silicon Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we explore the possibility of realizing an SSH system in zig-zag arrays of single P-atom quantum dots in Si. |
Maicol Ochoa; Keyi Liu; Piotr Rózanski; Michal Zielinski; Garnett Bryant; |
| 475 | Suppression of Crosstalk in Superconducting Qubits Using Dynamical Decoupling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Its suppression is therefore a key step towards enhancing the fidelity of quantum computation using transmons. Here we propose the use of dynamical decoupling to suppress the crosstalk and demonstrate the success of this scheme through experiments performed on several IBM quantum cloud processors. |
Vinay Tripathi; Huo Chen; Mostafa Khezri; Ka-Wa Yip; Eli Levenson-Falk; Daniel Lidar; |
| 476 | Effective Qubit Dephasing Induced By Spectator-qubit Relaxation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: On a multi-qubit superconducting circuit platform we show an increase in the dephasing rate of a control qubit due to the spontaneous relaxation of spectator qubits coupled to the control qubit. |
Petar Jurcevic; Luke Govia; |
| 477 | Modeling Decoherence Processes in High-dimensional Superconducting Circuits Using Master Equations and Quantum Trajectory Approach Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To systematically analyze the decoherence of an artificial atom with more than two levels, we adopt an effective Lindblad master equation and stochastic master equation (SME) to model various dephasing mechanisms in a qutrit, a three-level qudit, when dispersively coupled to a readout resonator. |
Kangdi Yu; Murat Sarihan; Madeline Taylor; Jin Ho Kang; Ananyo Banerjee; Cody Fan; Jonathan DuBois; Yaniv Rosen; Chee Wei Wong; |
| 478 | Decoherence Bounds on Fidelity of Operations Going Outside of The Computational Subspace Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we address quantum operations that utilize the states from outside of the computational subspace and find a closed expression for the fidelity reduction under the dissipation acting independently on the individual qubits. |
Tahereh Abad; Göran Johansson; Anton Frisk Kockum; |
| 479 | Correlated Fluctuation in Relaxation Times of Superconducting Qubits with T1 > 400 Μs Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Nevertheless, a detailed analysis of the fluctuations may provide us with additional information about the loss mechanisms, enabling us to further improve the relaxation times. |
Shingo Kono; Jiahe Pan; Mahdi Chegnizadeh; Xuan Yang; Yang Xu; Xuxin Wang; Marco Scigliuzzo; Tobias Kippenberg; |
| 480 | Enhancing The Coherence of Superconducting Qubits with Electric Fields Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we show that qubit coherence can be improved by tuning dominating defects away from the qubit resonance. |
Jürgen Lisenfeld; Alexander Bilmes; Alexey Ustinov; |
| 481 | Quasiparticle Effects in Transmons with Gap-asymmetric Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We model the qubit-quasiparticle coupling in terms of quasiparticle densities, accounting for the gap asymmetry in Josephson junctions, which naturally arise from the deposition of aluminum layers with different thicknesses. |
Giampiero Marchegiani; Luigi Amico; Gianluigi Catelani; |
| 482 | Mitigating Quasiparticle Tunneling of The Transmon Qudit with Charge Parity Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work improves the performance of a transmon circuit as a qudit system. |
Xingrui Song; Patrick Harrington; Luis Martinez; Kristin Beck; Jonathan DuBois; Kater Murch; |
| 483 | Noise-bias Preserving Gate with Qubits Encoded in An Superconducting Ising Chain Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show that a noise-bias preserving X gate can be performed on an Ising chain implemented using superconducting qubits. |
Gabriel Ethier-Majcher; Clauderic Ouellet-Plamondon; Marcelo Wu; Alireza Najafi-Yazdi; |
| 484 | Noise Resilient Edge Modes on A Chain of Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using 47 superconducting qubits, we implement the one-dimensional kicked Ising model which exhibits non-local Majorana edge modes (MEMs) with $mathbb{Z}_2$ parity symmetry. |
Xiao Mi; Dmitry Abanin; Vadim Smelyanskiy; Pedram Roushan; Michael Sonner; Murphy Yuezhen Niu; Kenneth Lee; Brooks Foxen; |
| 485 | Dynamics of Non-equilibrium Quasiparticles in Transmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have studied the diffusion, trapping, and recombination dynamics of non-equilibrium quasiparticles for different transmon qubits. |
Yizhou Huang; Zachary Steffen; Haozhi Wang; Yi-Hsiang Huang; Frederick Wellstood; Benjamin Palmer; |
| 486 | Effective and Scalable Control of Quantum Processors – Insight and Perspective Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we discuss our insights and perspective on the limits and capabilities of quantum control, the role of theoretical studies, and the methods available for experimental quantum control from a measurement point of view. |
Benjamin Lienhard; Saeed Khan; Robert Kosut; Hakan Tureci; Herschel Rabitz; |
| 487 | Analysis of Elzerman Readout Based on Bayesian Inference Methods Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: More sophisticated methods could both improve the accuracy and speed of detection of these events. In this talk, we report on the implementation of an algorithm based on Bayesian inference for the analysis of Elzerman readout data, and characterize its performance as compared to previous methods. |
Julia Berndtsson; Adam Mills; Zhaoyi (Joy) Zheng; Jason Petta; |
| 488 | Qubit-state Discrimination Techniques for Accurate Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Within readout times of 140 ns, we achieve fidelities in excess of 99.5%. |
Liangyu Chen; Benjamin Lienhard; Basudha Srivastava; Anton Frisk Kockum; Mats Granath; Per Delsing; Jonas Bylander; Giovanna Tancredi; |
| 489 | Improve The Pauli Coefficient Measurement with Active Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We provide an improvement in the process of Active Learning as a concept from machine learning that labels a large amount of data with a small amount of learning material. |
Jiaqi Ai; |
| 490 | Linear Filtering of Pulses for Cross-Talk Elimination in Frequency-Multiplexed Qubit Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show that the loss of fidelity due to X and Y rotations of a victim qubit is approximately proportional to the spectral density of the pulse shape, thereby motivating the use of frequency domain linear filtering to eliminate cross-talk. |
Sushil Subramanian; Stefano Pellerano; Todor Mladenov; |
| 491 | FPGA Module Synchronization for QubiC Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: As quantum bit (qubit) grows in count, the radio frequency (RF) control system becomes a limiting factor to large scale extensibility. To tackle this challenge and keep pace with rapidly evolving classical control requirements, we developed a synchronization protocol among multiple FPGA modules for distributed control systems. |
Yilun Xu; Gang Huang; Neelay Fruitwala; Ravi Naik; Kasra Nowrouzi; David Santiago; Irfan Siddiqi; |
| 492 | Quantum Crosstalk Mitigating Optimized Single Qubit Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we construct optimized control sequences for two-qubits that suppress crosstalk noise for given gates and crosstalk coupling strength. |
Kevin Fernando; Yasuo Oda; Gregory Quiroz; |
| 493 | Discovering Dynamical Error-Correcting Gate with Geometric Formalism and Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we try to combine geometric formalism for quantum control and physics-informed neural network. |
Bikun Li; Edwin Barnes; |
| 494 | Theory of Multi-dimensional Quantum Capacitance and Its Application to Spin and Charge Discrimination in Quantum-dot Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: If more than one gates are capacitively coupled with the system (e.g., in a quantum-dot array), the theory must be generalized to account for the dependence of the energy on all the applied gate voltages. With this aim, we have introduced the concept of QC matrix. |
Andrea Secchi; Filippo Troiani; |
| 495 | QuantumGEP: Gene Expression Programming for Quantum Computing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: QuantumGEP relies on gene expression programming (GEP) [2] and this talk focuses on advanced features, including automatically defined functions, multiple genes, and the chromosome. |
Gonzalo Alvarez; Ryan Bennink; Stephan Irle; Jacek Jakowski; |
| 496 | Spin Chain Transformations Under Continuous Driving Fields Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our applied control field can also mitigate the effect of noise on the spin chain. We show how these spin chain transformations can be useful for quantum state transfer as well as entanglement generation. |
Hudaiba Soomro; Adam Zaman Chaudhry; |
| 497 | Simulating Quantum Circuits Using Efficient Tensor Network Contraction Algorithms with Subexponential Upper Bound Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We derive a rigorous upper bound on the classical computation time of finite-ranged tensor network contractions in d ≥ 2 dimensions. |
Thorsten Wahl; Sergii Strelchuk; |
| 498 | Quantum Uncertainty Principles for Measurements with Interventions Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Heisenberg’s uncertainty principle encapsulates an iconic difference between classical and quantum mechanics. Whereas any two observable properties of a classical system may be … |
Mile Gu; Yunlong Xiao; Yuxiang Yang; Liu Qing; Ximing Wang; |
| 499 | Quantum Observables in Accelerated Frames: Observing Particles Beyond The Rindler Horizon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This method is adopted for the case of a single-particle state. |
Riccardo Falcone; Claudio Conti; |
| 500 | The Wave-particle Duality of The Qudit-based Quantum Space As Demonstrated By The Wave-like Quantum Functionals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose the wave-particle duality of the qudit-based quantum space and the wave-like quantum functionals are new fundamental physical realities that have not been previously considered. |
Zixuan Hu; Sabre Kais; |
| 501 | Quantum Conditional Probabilities and New Measures of Quantum Information Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I define a form of quantum conditional probability and related measures of quantum information. |
David Kagan; |
| 502 | A Two-component Bose-Einstein Condensate Can ‘bypass’ The No-cloning Theorem Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: No-cloning theorem in quantum cryptography prevents an eavesdropper from perfectly duplicating any arbitrary quantum state. Here we argue that a scheme for producing a two-component quantum superposition of Bose-Einstein condensates can, in principle, generate N bosonic clones of any single quantum state at large N thermodynamic limit and thus operationally ‘bypass’ the restrictions imposed by the above mentioned theorem. |
Shouvik Datta; |
| 503 | Quantum Wasserstein Distance Based on An Optimization Over Separable States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We define the quantum Wasserstein distance such that the optimization is carried out over bipartite separable states rather than bipartite quantum states in general, and examine its properties. |
Geza Toth; Jozsef Pitrik; |
| 504 | Effects of Dipolar Coupling on An Entanglement Storage Device Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we will explicitly show the effects of the dipolar coupling on the environment-induced entanglement using a recently-proposed fluctuation-regulated quantum master equation [A.Chakrabarti and R. Bhattacharyya, Phys. |
Saptarshi Saha; Rangeet Bhattacharyya; |
| 505 | Shapes of Quantum Entanglement Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use this method to study the structure of entanglement entropy in quantum states (obtained through exact diagonalization). |
Bart Olsthoorn; |
| 506 | Quantum Algorithms for Quantum Optimal Control Problems with Precise Cost Estimates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present two quantum algorithms for solving the quantum optimal control problem: one is based on simulating time-dependent Hamiltonian evolution and quantum gradient estimation, and the other is based on solving linear systems and phase estimation. |
Xiantao Li; |
| 507 | Robust Optimal Control for A Systematic Error in The Control Amplitude Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we demonstrate, theoretically and experimentally, that pulses designed by optimisation can be used to counteract the loss of fidelity due to a characterisa- tion error of the coupling of the control to the qubit. |
Max Cykiert; Eran Ginossar; |
| 508 | QuantumControl.jl: A Modern Framework for Quantum Optimal Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate the use of the framework for tasks in quantum information and quantum metrology. |
Michael Goerz; Sebastian Carrasco; Vladimir Malinovsky; |
| 509 | Tensor-network Optimal Control for Multi-qubit Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This necessitates the development of a many-body optimal control algorithm capable of realising quantum operations, i.e., a target state or target gate, which is robust against uncertainty. We develop a robust optimal control algorithm based on tensor networks, and demonstrate its effectiveness for implementing multi-qubit entangled states and unitary gates. |
Nguyen Le; Eran Ginossar; |
| 510 | The Complex-time Picture of Shortcuts to Adiabaticity: Interference in The Landau-Zener-Stückelberg-Majorana Model Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the physical mechanism by which the counterdiabatic Hamiltonian suppresses transitions in the Landau-Zener-Stückelberg-Majorana model. |
Gabriel Cardoso; |
| 511 | Nonadiabatic Landau-Zener-Stückelberg-Majorana Transitions, Dynamics, and Interference Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate periodically driven TLSs in different approaches [2] such as adiabatic-impulse model (AIM), rotating-wave approximation (RWA), Floquet method, numerical solving of Schrodinger and Lindblad equations, to describe interferometry and different aspects of each method. |
Oleh Ivakhnenko; Sergey Shevchenko; Franco Nori; |
| 512 | Driving Can Have No Effect, If The Phase Is Chosen Appropriately Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work relates to the possibility of controlling two-level quantum systems under the action of linear excitation. |
Polina Kofman; Oleh Ivakhnenko; Sergey Shevchenko; Franco Nori; |
| 513 | Universal Robust Quantum Gates By Geometric Correspondence Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose conditions for dynamically correcting errors and quantitative robustness measures for any control pulses, and establish an analytic-numerical hybrid protocol to search for robust control pulses with the simplest waveforms and any given gate time. |
Yong-Ju Hai; Junning Li; Junkai Zeng; Dapeng Yu; Xiu-Hao Deng; |
| 514 | Non-resonant Quantum Logic Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study an alternative approach for implementing quantum logic gates based on Landau-Zener-Stückelberg-Majorana (LZSM) interferometry with non-resonant driving and the alternation of adiabatic evolution and non-adiabatic transitions. |
Artem Ryzhov; Oleh Ivakhnenko; Sergey Shevchenko; Franco Nori; |
| 515 | Quantum Control of Spin Qubits Using Magnetic Skyrmions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show a technique of energy-efficient quantum control of spin qubits with topologically protected nanoscale magnetic skyrmions allowing high frequency control of spin qubits (nominally five times that with nanomagnets) which can potentially lead to high-speed, scalable, and high fidelities quantum computing [4]. |
Md Fahim Chowdhury; Md Mahadi Rajib; |
| 516 | Trapped Ion Quantum Computers: Challenges and Opportunities Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will highlight recent system development as well as plans for future quantum computing and simulation devices. |
Crystal Noel; Alexander Kozhanov; Marko Cetina; Christopher Monroe; |
| 517 | Experimental Implementation of An Efficient Test of Quantumness Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Specifically, we perform a proof-of-principle demonstration of the protocol from Brakerski, et al 2020, which uses cryptographic primitives to certify non-classical behavior. |
Laura Lewis; Daiwei Zhu; Alexandru Gheorghiu; Crystal Noel; Or Katz; Bahaar Harraz; Qingfeng Wang; Andrew Risinger; Lei Feng; Debopriyo Biswas; Laird Egan; Thomas Vidick; Marko Cetina; Christopher Monroe; |
| 518 | Statistics of Classical Nonlinear Dynamical Systems Obtained from Noisy Intermediate-Scale Quantum Devices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use the Quantum Phase Estimation algorithm to obtain the stationary solution of the FPE, apart from information about the sign of the amplitudes. |
Dingding Wei; John Marston; Brenda Rubenstein; |
| 519 | Dealing with Noise in Digital Quantum Simulations and Variational Circuits on A Trapped-ion Machine Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an efficient "fast-and-slow" optimization strategy that switches between global Bayesian and fast local optimization to avoid local minima in large parameter spaces. |
Norbert Linke; |
| 520 | Characterizing A Non-equilibrium Phase Transition on A Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present our recent work [1] where we use the Quantinuum H1-1 quantum computer to realize a non-equilibrium phase transition in a dissipative quantum circuit generalization of a classical disease spreading model that is known to possess an absorbing state transition. |
Eli Chertkov; Zihan Cheng; Andrew Potter; Sarang Gopalakrishnan; Thomas Gatterman; Justin Gerber; Kevin Gilmore; Dan Gresh; Alex Hall; Aaron Hankin; Mitchell Matheny; Tanner Mengle; David Hayes; Brian Neyenhuis; Russell Stutz; Michael Foss-Feig; |
| 521 | Gate-free VQE Exploiting Inter-qubit Parametric Interaction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: [1], a gate-free algorithm termed ctrl-VQE was proposed that achieved chemical accuracy through a direct optimization of the laboratory-frame analog control settings. |
Tongyu Zhao; Chenxu Liu; Ayush Asthana; Xiaoyue Jin; Katarina Cicak; Jose Aumentado; Nicholas Mayhall; Edwin Barnes; Sophia Economou; Raymond Simmonds; |
| 522 | Zero Noise Extrapolation for A Small Diatomic Molecule on A Trapped-ion Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work uses two methods to scale the noise in our circuits: lengthening the duration of our laser control pulses and discretely inserting gates. |
Oliver Maupin; Ashlyn Burch; Christopher Yale; Peter Love; Susan Clark; Brandon Ruzic; Andrew Landahl; Kenneth Rudinger; Antonio Russo; Daniel Lobser; Andrew Baczewski; |
| 523 | Investigating The Properties of The Homogeneous Electron Gas on Small-scale Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will report on the opportunities and limits of many-body calculations of the homogeneous electron gas (HEG) when performed on small-scale quantum computers. |
Justin Lietz; Peter Groszkowski; Eduardo Coello Perez; Markus Eisenbach; Alessandro Baroni; Mariia Karabin; |
| 524 | Efficiently Simulating The Benzene Molecule on Trapped-Ion Quantum Computers Using A Variational Quantum Eigensolver with Unitary Coupled Cluster with Singles and Doubles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we apply a series of circuit optimization techniques to improve the compilation efficiency of the uCCSD ansatz, tailored to trapped-ion quantum devices. |
Luning Zhao; Joshua Goings; Titus Morris; Jacek Jakowski; Raphael Pooser; |
| 525 | Geometric Phase Interference Around Engineered Conical Intersections in Trapped Ions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: These can be mapped to the internal states and nuclear parameters of simple molecules. With this tool, we present a scheme for engineering a CI in trapped ions systems and demonstrating controllable geometric phase interference by using an appropriate initial state and adiabatic evolution. |
Jacob Whitlow; Zhubing Jia; Chao Fang; Ye Wang; Jungsang Kim; Kenneth Brown; |
| 526 | Simulating CO2 Adsorption on Metal-organic Frameworks Using NISQ Hardware and CuQuantum Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Metal-organic frameworks (MOFs), porous 3D surfaces consisting of a metallic core and organic ligands, are a leading class of materials for solid adsorbents for carbon capture and … |
Jonathan Owens; |
| 527 | Simulating Quantum Chemical Dynamics on Ion-trap Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Recently, with the experimental and algorithmic developments in quantum computing, considerable progress has been made in the study of electronic structure on quantum hardware. |
Debadrita Saha; Melissa Revelle; Jeremy Smith; Philip Richerme; Amr Sabry; Srinivasan Iyengar; |
| 528 | Polarized Light-induced Electron Transfer Simulation on The Yb171+ Qutrit System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present the experimental results of simulating the polarized light-induced electron transfer on the Yb 171+ qutrit (3-level system) system. |
Ke Sun; Chao Fang; Kenneth Brown; Jungsang Kim; |
| 529 | Scalable and Programmable Phononic Network Using Vibrational Modes of Trapped Ions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present the phononic network that consists of up to four modes with the capability of programming an arbitrary network as well as the deterministic preparation and detection. |
Kihwan Kim; |
| 530 | Fast Coherent Swaps Between High-Q Bosonic Modes with A Parity-protected Coupler Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that applying a selectively differential pump to a DC-SQUID gives us a coupling mechanism that is parity-protected, only allowing processes that couple an even number of pump photons to an even number of mode quanta. |
Aniket Maiti; Yao Lu; John Garmon; Suhas Ganjam; Yaxing Zhang; Jahan Claes; Luigi Frunzio; Robert Schoelkopf; |
| 531 | Characterizing Control of A High Fidelity Beamsplitter in The Single-Photon Subspace Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Recent demonstrations of highly coherent beamsplitting interactions between two high-Q bosonic modes in circuit QED platforms motivate us to characterize our control of this … |
John Garmon; Yao Lu; Aniket Maiti; Suhas Ganjam; Yaxing Zhang; Jahan Claes; Luigi Frunzio; Robert Schoelkopf; |
| 532 | Universal Control of A Bosonic Mode in A Planar Superconducting Nonlinear Resonator Via Native Interactions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a bosonic mode consisting of a superconducting nonlinear asymmetric inductive element (SNAIL)-terminated planar resonator, which is not controlled by an ancilla qubit but via the nonlinearities in the SNAIL element. |
Axel Eriksson; Théo Sépulcre; Mikael Kervinen; Timo Hillmann; Marina Kudra; Dupouy Simon; Yong Lu; Maryam Khanahmadi; Jiaying Yang; Claudia Castillo Moreno; Per Delsing; Simone Gasparinetti; |
| 533 | Fast Entanglement of Weakly Interacting Harmonic Oscillators with Superconducting Qubits for Bosonic Encoded Quantum Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Typically these schemes use a large coupling of the bosonic modes to the ancilla for fast operation, however, this creates undesired anharmonicity in the form of Kerr nonlinearities, which degrade performance. We use a symmetry-inspired approach for fast displacement gates conditioned on the state of the qubit, and utilize this to produce and measure both entangled and disentangled cat states in a multi-mode cavity weakly coupled to a single transmon qubit. |
Asaf Diringer; Eliya Blumenthal; Shay Hacohen-Gourgy; |
| 534 | Fast Control of Multimode Cavities with Conditional Displacements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present multimode generalizations of echoed-conditional displacements sequences–entangling multiple cavity modes with sequential conditional displacements of the individual modes. |
Eesh Gupta; Thomas DiNapoli; Jordan Huang; Ming Yuan; Kevin He; Liang Jiang; David Schuster; Srivatsan Chakram; |
| 535 | Coherence Preserving Tunable Coupler For 3D Cavities Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a tunable coupler that preserves the coherence of the neighboring cavities by minimizing interactions with lossy degrees of freedom while maintaining a high on/off ratio in coupling strengths. |
Nicholas Materise; Srivatsan Chakram; Jens Koch; Eliot Kapit; |
| 536 | A Hybrid Controlled-SWAP Gate Between Two Bosonic Modes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The controlled-SWAP (cSWAP) gate, which exchanges the states of two qubits conditioned on the state of an ancilla qubit, is at the heart of the SWAP-test sequence for quantum state comparison, as well as proposals for quantum random access memory. We implement this gate in an architecture that combines a tunable beamsplitter interaction between two bosonic modes in superconducting microwave cavities with universal single cavity control provided by a dispersively coupled transmon ancilla. |
Sophia Xue; Stijn de Graaf; Benjamin Chapman; Yaxing Zhang; James Teoh; Jacob Curtis; Takahiro Tsunoda; Alec Eickbusch; Alexander Read; Akshay Koottandavida; Shantanu Mundhada; Luigi Frunzio; Michel Devoret; Steven Girvin; Robert Schoelkopf; |
| 537 | Tunable Coupling Between Superconducting 3d Cavities Via Integrated Low-loss Couplers on A Planar Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In the talk, we’ll describe the design and show preliminary data for a tunable coupling scheme between 3d superconducting microwave cavities mediated by switching elements on a planar circuit. |
Ziyi Zhao; Eva Gurra; Leila Vale; Michael Vissers; Konrad Lehnert; |
| 538 | Efficient Simulations of Lindblad Master Equations in The Stabilized Code Space of Cat Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a new method to obtain effective reduced dynamics on the decoherence-free subspace of a dissipative Lindblad dynamics having multiple degenerate steady states. |
François-Marie Le Régent; Jérémie Guillaud; Pierre Rouchon; |
| 539 | Coherent Cancellation of Tunneling and Quantum Information Protection: The Delta Variant of The Kerr-cat Qubit – Part 1/3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Moreover, can the cancellation of tunneling be extended to the higher excited states? In this two-part talk, we will present experimental results, measuring the passage through zero of the tunneling amplitude in the ground and excited state spectrum as a function of squeezing drive strength and frequency. |
Rodrigo Cortinas; Jayameenakshi Venkatraman; Nicholas Frattini; Xu Xiao; Michel Devoret; |
| 540 | Coherent Cancellation of Tunneling and Quantum Information Protection: The Delta Variant of The Kerr-cat Qubit – Part 2/3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Moreover, can the cancellation of tunneling be extended to the higher excited states? In this two-part talk, we will present experimental results, measuring the passage through zero of the tunneling amplitude in the ground and excited state spectrum as a function of squeezing drive strength and frequency. |
Jayameenakshi Venkatraman; Rodrigo Cortinas; Nicholas Frattini; Xu Xiao; Michel Devoret; |
| 541 | Modeling Coherent-state Lifetime in Kerr-cat Qubits – Part 3/3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: How can theory explain the surprising connection between the energy levels and the coherent-state lifetime? |
Qile Su; Rodrigo Cortinas; Jayameenakshi Venkatraman; Michel Devoret; Shruti Puri; |
| 542 | A Parameter Setting Heuristic for The Quantum Alternating Operator Ansatz Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we introduce a classical strategy for parameter setting, especially suitable for cases in which the number of distinct cost values grows only polynomially with the problem size. |
James Sud; Stuart Hadfield; Eleanor Rieffel; Norm Tubman; Tad Hogg; |
| 543 | Digital Adiabatic State Preparation Error Scales Better Than You Might Expect Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This paper describes objective technical results and analysis. |
Lucas Kocia; Fernando Calderon-Vargas; Matthew Grace; Alicia Magann; James Larsen; Andrew Baczewski; Mohan Sarovar; |
| 544 | Strategies for Simulating Adiabatic Time Evolution on Noisy Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: They range from simulating time evolution of Hamiltonians to solving optimization problems where the solution is obtained through simulating a slowly varying Hamiltonian that evolves a known ground state into an unknown desired ground state. |
Weixin Lu; Jaewoo Lee; Seyed Mohammad Farzaneh; Bassel Elfeky; Nicholas Bronn; Javad Shabani; |
| 545 | Performance and Limitations of The QAOA at Constant Levels on Different Problems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The Quantum Approximate Optimization Algorithm (QAOA) is a general purpose quantum algorithm designed for combinatorial optimization. We analyze its expected performance and prove concentration properties at any constant level (number of layers) on ensembles of random combinatorial optimization problems in the infinite size limit. |
Joao Basso; David Gamarnik; Song Mei; Leo Zhou; |
| 546 | Adiabatic Oracle for Grover’s Algorithm Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Grover’s search algorithm was originally proposed for circuit-based quantum computers. |
Nikolai Sinitsyn; Bin Yan; |
| 547 | Quantum Annealing with Error Mitigation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a QA strategy combined with the EM method called dual-state purification to suppress the effects of decoherence. |
Yuta Shingu; Yuichiro Matsuzaki; Shiro Kawabata; Tetsuro Nikuni; |
| 548 | Catastrophic Failure of Quantum Annealing Owing to Non-stoquastic Hamiltonian and Its Avoidance By Decoherence Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Meanwhile, decoherence is regarded as of the main obstacles for QA. Here, we present examples showing that non-stoaquastic Hamiltonians can lead to catastrophic failure of QA, whereas a certain decoherence process can be used to avoid such failure. |
Takashi Imoto; Yuichiro Matsuzaki; |
| 549 | Adiabatic Condition for Quantum Annealing Revisited Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: It is supposed that scaling of the EG provides criteria for whether the optimization problem is hard or not. In this presentation, we propose a general framework that gives counter-examples to this criteria: QA with a constant annealing time fails although the EG is constant, i.e., O(L0) during QA, where L is the problem size. |
Hiroshi Hayasaka; Takashi Imoto; Yuichiro Matsuzaki; Shiro Kawabata; |
| 550 | Multiple Target Tracking and Filtering Using Bayesian Diabatic Quantum Annealing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a hybrid quantum/classical algorithm to solve an NP-hard combinatorial problem called the multiple target data association (MTDA) and tracking problem. |
Tim McCormick; Zipporah Klain; Ian Herbert; Anthony Charles; Robert Angle; Bryan Osborn; Roy Streit; |
| 551 | Designing Quantum Annealing Schedules with Bayesian Optimization Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the use of Bayesian Optimization (BO), a global optimization design strategy useful for optimizing expensive-to-evaluate functions, to design optimized QA schedules. We test different parametrizations of QA schedules and use BO to optimize them in terms of several figures of merit. |
Jernej Rudi Finzgar; Martin Schuetz; Kyle Brubaker; Helmut Katzgraber; |
| 552 | Robustness of Diabatic Speedup in Quantum Annealing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Since the transitions depend on the evolution rate, it is important to consider the sensitivity of any potential speedup to the annealing time. We explore this sensitivity using annealing spectra containing an exponentially closing gap and an additional, tuneable, small gap created by a catalyst. |
Natasha Feinstein; Ivan Shalashilin; Sougato Bose; Paul Warburton; |
| 553 | Quantum Critical Dynamics in A 5000-qubit Programmable Spin Glass Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Due to the importance of spin glasses as a paradigmatic computational testbed, reproducing this phenomenon in a programmable system has remained a central challenge in quantum optimization. Here we achieve this goal by realizing quantum critical spin-glass dynamics with a superconducting quantum annealer. |
Mohammad Amin; |
| 554 | Flag Gadgets Based on Classical Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop a framework to design flag gadgets using classical codes, which is applicable to all stabilizer codes. |
Benjamin Anker; Milad Marvian; |
| 555 | Sampling-based Quasiprobability Simulation for Fault-tolerant Quantum Error Correction on The Surface Codes Under Coherent Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a sampling-based simulation for fault-tolerant quantum error correction under coherent noise. |
Shigeo Hakkaku; Kosuke Mitarai; Keisuke Fujii; |
| 556 | High-threshold Fault-tolerance in Measurement-based Error Correction with Tailored Fusion Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose new four- and six- body resource states that can be input to fusion circuits to build the RHG cluster state and the recently discovered XZZX cluster state. |
Kaavya Sahay; |
| 557 | Adaptive Shor Scheme for Fault Tolerance on Repetition Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present the first simulation results of the adaptive Shor scheme and verify that it is indeed fault tolerant. |
Yaniv Kurman; Yonatan Cohen; Lior Ella; |
| 558 | Improved Quantum Error Correction with Randomized Compiling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper, we explore the role and effectiveness of using noise tailoring techniques to improve the performance of error correcting codes. |
Aditya Jain; Pavithran Iyer; Stephen Bartlett; Joseph Emerson; |
| 559 | A Highly Accurate Decoding of The Surface Code Using Ising Model Solver Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose to perform near-optimal decoding by mapping the decoding problem to the energy minimization problem of the Ising model. |
Yusaku Takeuchi; Keisuke Fujii; Shintaro Sato; Hirotaka Oshima; Jun Fujisaki; |
| 560 | Erasure Qubits: Overcoming The T1 Limit in Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this article we propose a scheme for overcoming the conventional T 1 limit on fidelity by designing qubits in a way that amplitude damping errors can be detected and converted into erasure errors. |
Aleksander Kubica; Arbel Haim; Yotam Vaknin; Fernando Brandao; Alex Retzker; |
| 561 | Engineering Error-detectable Gates on Logical Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we construct a universal set of SNAP-based (Selective Number-dependent Arbitrary Phase [1]) quantum gates on a logical qubit whose dominant transmon errors are detectable. |
Jacob Curtis; Takahiro Tsunoda; William Kalfus; Luigi Frunzio; Robert Schoelkopf; |
| 562 | Minimum Energy Decoding for Multimode Gottesman-Kitaev-Preskill (GKP) Codes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we consider multimode Gottesman-Kitaev-Preskill (GKP) codes (encoding a qubit in many oscillators) from a lattice perspective and study a minimum-energy decoding strategy for correcting random Gaussian shift errors. |
Mao Lin; Christopher Chamberland; Kyungjoo Noh; |
| 563 | Squeezed Kerr Quantum Oscillator with Multiple Spectral Degeneracies Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we show that an extra control parameter, the detuning of the two-photon drive with respect to the oscillators resonance, plays a crucial role in the properties of the defined qubit. |
Diego Ruiz; Ronan Gautier; Jérémie Guillaud; Mazyar Mirrahimi; |
| 564 | Low Depth Parity Check Gate Set for Quantum Error Correction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a rigorous formalism for constructing and verifying the low-depth parity check gate set, designed specifically for QEC, which can also be used for N-qubit parity check circuits. |
GOZDE USTUN; Andrea Morello; Simon Devitt; |
| 565 | Quantum Error Correction in Cat-code Qubits: Analysis and Minimization of Failure Rates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For cat qubits using either a transmon or fluxonium as the ancilla, we survey and categorize the major failure modes, providing efficient methods to estimate failure rates. |
Danyang Chen; Sean van Geldern; Tali Shemma; Andrew Houck; Chen Wang; Jens Koch; |
| 566 | Quantum Error Correction with Metastable States of Trapped Ions Using Erasure Conversion Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we apply the idea of performing erasure conversion by encoding qubits into metastable atomic states, proposed by Wu, Kolkowitz, Puri, and Thompson [Nat. |
Mingyu Kang; Wes Campbell; Kenneth Brown; |
| 567 | Protecting Expressive Circuits with A Quantum Error Detection Code Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: On the 12-qubit Quantinuum H1-2 hardware we demonstrate the protection of circuits of 8 logical qubits with up to 256 layers, saturate the logical quantum volume of $2^8$, and show the positive effect of increasing the number of syndrome measurements. |
Chris Self; Marcello Benedetti; David Amaro; |
| 568 | Fault-tolerant Quantum Computation in Bosonic Systems with Ancillas Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, such ancillas are typically more prone to environmental noise, limiting the fidelity of ancilla-assisted quantum operations. To address this challenge, we develop a general framework for fault-tolerant quantum computation (FTQC) on a bosonic system with DV ancillas composed of fault-tolerant operations against noises from both parts. |
Daohong Xu; Qian Xu; Pei Zeng; Liang Jiang; |
| 569 | Displacement Oscillator: High Order Photon-photon Interactions in A Superconducting Circuit (Part 2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We expect peculiar effects in this extreme limit, such as the alternation of the sign of the oscillator frequency shift for each added photon, and even nonlocal quantum dynamics. In this two-part talk, we present the theoretical model of the system as well as experimental progress. |
Alvise Borgognoni; Clarke Smith; Marius Villiers; Erwan Roverc’h; Camille Berdou; Aron Vanselow; Natalia Pankratova; José Palomo; Aurélie Pierret; Takis Kontos; Mazyar Mirrahimi; Benoit Doucot; Philippe Campagne-Ibarcq; Zaki Leghtas; |
| 570 | Displacement Oscillator: High Order Photon-photon Interactions in A Superconducting Circuit (Part 1) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We expect peculiar effects in this extreme limit, such as the alternation of the sign of the oscillator frequency shift for each added photon, and even nonlocal quantum dynamics. In this two-part talk, we present the theoretical model of the system as well as experimental progress. |
Clarke Smith; Alvise Borgognoni; Marius Villiers; Erwan Roverc’h; Camille Berdou; Aron Vanselow; Natalia Pankratova; José Palomo; Aurélie Pierret; Takis Kontos; Mazyar Mirrahimi; Benoit Doucot; Philippe Campagne-Ibarcq; Zaki Leghtas; |
| 571 | Bosonic Error Correction Using A Bit-flip-protected Control Qubit: Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose replacing the transmon with a heavy-fluxonium qubit, which has been shown to possess T1 lifetimes in excess of 1 millisecond [5-7]. |
Shoumik Chowdhury; Max Hays; Shantanu Jha; Miuko Tanaka; Agustin Di Paolo; Patrick Harrington; Jeffrey Knecht; Alexander Melville; Bethany Niedzielski; Mollie Schwartz; Jonilyn Yoder; Kyle Serniak; Jeffrey Grover; William Oliver; |
| 572 | Bosonic Error Correction Using A Bit-flip-protected Control Qubit: Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose replacing the transmon with a heavy-fluxonium qubit, which has been shown to possess T1 lifetimes in excess of 1 millisecond [5-7]. |
Shantanu Jha; Max Hays; Shoumik Chowdhury; Miuko Tanaka; Agustin Di Paolo; Patrick Harrington; Jeffrey Knecht; Alexander Melville; Bethany Niedzielski; Mollie Schwartz; Jonilyn Yoder; Kyle Serniak; Jeffrey Grover; William Oliver; |
| 573 | Quantum Logic in Waveguide Quantum Electrodynamics of Artificial Superconducting Atoms – Design Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a device with two fluxonium superconducting artificial atoms in a high pass waveguide filter. |
Chiang Yuan Hu; Tzu-Lu Lin; Ching-Yeh Chen; Chien-Chun Ting; Ming-Che Hsieh; Yu-Chi Chang; Ching-Ping Lee; Yen-Hsiang Lin; |
| 574 | Quantum Logic in Waveguide Quantum Electrodynamics of Artificial Superconducting Atoms – Experiment Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate our experimental results on a device with two fluxonium superconducting artificial atoms in a waveguide. |
Yen-Hsiang Lin; Chiang-Yuan Hu; Tzu-Lu Lin; Ching-Yeh Chen; Chien-Chun Ting; Ming-Che Hsieh; Yu-Chi Chang; Ching-Ping Lee; |
| 575 | Fast GKP State Preparation Using Periodic Driving Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a novel method for preparing GKP states by engineering a time-periodic Hamiltonian whose Floquet states are GKP states. |
Xanda Kolesnikow; |
| 576 | Fault-tolerant Gates for Protected Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we describe a general framework for performing fault-tolerant gates on protected qubits using quantum error correcting codes. |
Felix Thomsen; Thomas Smith; Andrew Doherty; |
| 577 | Stabilization of A Four-component Schrödinger Cat State By Reservoir Engineering in A High-impedance Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will report on progress towards the stabilization of a four-legged cat state by engineered dissipation. |
Aron Vanselow; Marius Villiers; Pascal Morfin; Anne Denis; Zaki Leghtas; Philippe Campagne-Ibarcq; |
| 578 | Quasi-1D Coplanar-Waveguide Lattices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we will present progress towards development of new quasi 1D CPW lattices, which exhibit new spectral features and new forms of photon-mediated qubit-qubit interaction, beyond those previously observed in simple 1D chains [4]. |
Maya Amouzegar; Martin Ritter; Theodore Gifford; Jeffrey Wack; Alicia Kollar; |
| 579 | Thermal Cat States in A High Q Niobium Cavity Setup Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For example, in circuit QED experiments, filters and attenuators in the drive and measurement lines are used to prevent thermal noise reaching the quantum systems. Here, we demonstrate that starting from a classical thermal state, we can create coherent superpositions of these thermal states aka thermal cat states with visible interference fringes highlighting their non-classical nature. |
Ian Yang; Christian Schneider; Romain Albert; Maximilian Zanner; Gerhard Kirchmair; |
| 580 | A Long-lived Quantum Memory Using A 3D Niobium Cavity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present results for a quantum memory realized with a novel niobium cavity controlled by a weakly-coupled transmon ancilla. |
Ofir Milul; Barkay Guttel; Lalit Joshi; Daniel Chausovsky; Engin Ciftyurek; Fabien Lafont; Serge Rosenblum; |
| 581 | Suppressing Error Propagation in Bosonic Qubits Using Real-time Feedback Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This error propagation presented a major limitation in previous experiments with bosonic qubits. We will present a novel error mitigation protocol based on repeated measurements and real-time feedback to suppress this error propagation. |
Uri Goldblatt; Daniel Chausovsky; Fabien Lafont; Serge Rosenblum; |
| 582 | Towards Caviy State Boosting with Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Previously, the topological regime of such models was thought to be experimentally inaccessible due to a need for ultrastrong coupling; however, recent results have shown that the desired Hamiltonian is achievable in a rotating frame and can give rise to “boosting” of non-classical states of light in a cavity [2]. Here we present experimental progress toward realization of this effect using a transmon qubit in a microwave cavity. |
Martin Ritter; David Long; Anushya Chandran; Alicia Kollar; |
| 583 | Building Small, Fast and Hot Hole Spin Qubits in Si and Ge Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The leading transistor for classical scaling is the silicon fin field-effect transistor (FinFET), integrating billions of FinFETs on a chip. Here, we show that a Si FinFET can host a hole spin qubit and operate above 4 K, potentially allowing in-situ integration of the control electronics. |
Dominik Zumbuhl; |
| 584 | Modelling of Planar Germanium Hole Qubits in Electric and Magnetic Fields Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The sizeable spin-orbit interaction in this structure allows for efficient electric qubit operations while also coupling the qubit to electrical noise. In this talk we show simulations of a heterostructure hosting these hole spin qubits [1]. |
Maximilian Russ; Chien-An Wang; Giordano Scappucci; Menno Veldhorst; |
| 585 | Hole Spin Qubits in Semiconductor Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we develop a theory with the objective of understanding how an alternating electric field can couple the two heavy hole states in a two-dimensional quantum dot to allow electric dipole spin resonance. |
Jiawei Wang; Xuedong Hu; Herbert Fotso; |
| 586 | Hole Spin Manipulation in Inhomogeneous and Non-separable Electric Fields Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We address the electrical manipulation of hole spins in semiconductor heterostructures subject to inhomogeneous vertical electric fields and/or in-plane AC electric fields. |
Esteban Rodriguez; Biel Martinez Diaz; Yann-Michel Niquet; Jose Carlos Abadillo-Uriel; |
| 587 | Towards Si FinFET Quantum Devices with Reproducible Behavior Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present our work towards reducing disorder and trapped charges by investigating material stacks utilizing Hall bar and percolation density measurements. |
Matthias Mergenthaler; Felix Schupp; Noelia Vico-Trivino; Konstantinos Tsoukalas; Lisa Sommer; Eoin Kelly; Michele Aldeghi; Nico Hendrickx; Leonardo Massai; Andreas Kuhlmann; Ute Drechsler; Antonis Olziersky; Peter Müller; Stephan Paredes; Gian Salis; Patrick Harvey-Collard; Andreas Fuhrer; |
| 588 | Quantum Mechanical Modeling of Electron Spins in Realistic Gate Defined Double Quantum Dots Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a modelling framework that bridges a devices physical and operational conditions to the qubit energy space. |
M.Mohamed El Kordy Shehata; George Simion; Fahd A. Mohiyaddin; Ruoyu Li; Asser Elsayed; Clement Godfrin; Danny Wan; Massimo Mongillo; Kristiaan De Greve; Pol Van Dorpe; |
| 589 | Characterization of Ultra-low Charge Noise Silicon MOS Quantum Dots Fabricated in A Full 300mm CMOS Platform Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report highly uniform quantum dot operation and ultra-low noise at the SiSiO 2 interface at milli-Kelvin temperatures. |
Asser Elsayed; Mohamed Shehata; Clement Godfrin; Ruoyu Li; Stefan Kubicek; Shana Massar; Yann Canvel; Arame Thiam; Julien Jussot; Massimo Mongillo; Danny Wan; Pol Van Dorpe; Kristiaan De Greve; |
| 590 | Interacting Two-Level Systems As A Source of 1/f Noise in Semiconductor Quantum Dot Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a model in which a pair of quantum dots are coupled to a 2D bath of fluctuators that have electric dipole moments and that interact with each other, i.e., with the other fluctuators. |
Dan Mickelsen; Herve Carruzzo; Clare Yu; |
| 591 | Energy Dissipation in Macroscopic Quantum Tunnel Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a model that considers the energy dissipated during quantum tunneling processes in solid state junctions. |
Edgar Patino; Leonardo Rios E; Neelima Kelkar; |
| 592 | Effects of Leakage on The Realization of A Discrete Time Crystal in A Chain of Singlet-triplet Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider the effects of leakage on the ability to realize a discrete time crystal (DTC) in a semiconductor quantum dot linear array being operated as a chain of singlet-triplet (ST) qubits. |
Robert Throckmorton; |
| 593 | A Realizable Time Crystal of Four Silicon Quantum Dot Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We illustrate differences between prethermal phenomena and true time-crystalline spatiotemporal order. |
Nathan Foulk; |
| 594 | Optimizing Charge Dynamics in Quantum Dot Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we solve, via exact diagonalization, the states of a single-electron quantum dot system, utilizing the OCTOPUS software package. |
Brian Leininger; Mario Borunda; |
| 595 | Entanglement Dynamics of An Ising Spin Chain Coupled to A Central Ancilla Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Szabo and Trivedi have characterized the entanglement dynamics of the transverse field Ising chain with the spins coupled uniformly to a central bosonic ancilla using different entanglement metrics including a novel one called multipartite entanglement loss (MEL) [1]. In this work, we augment this investigation using the eigenstate entanglement spectrum (EES) and the entanglement spectrum statistics (ESS) and compare the insights to those from the MEL. |
Linta Joseph; Joseph Szabo; Nandini Trivedi; Chandrasekhar Ramanathan; |
| 596 | Circuit Quantum Electrodynamics Measurement of Andreev Levels in A Semiconducting Nanowire Weak Link Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Individual Andreev levels can be resolved in highly transparent, few-channel weak links by embedding them in superconducting microwave resonators. We apply such circuit quantum electrodynamics probing method to measure Andreev levels in a semiconducting nanowire proximitized by superconducting electrodes. |
Pavel Kurilovich; |
| 597 | Measuring Quasi-particle Tunneling Rates in Transmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For some Al qubits, we compare the measured charge parity rates to T 1 with and without a direct galvanic connection to the ground plane. |
Yi-Hsiang Huang; Yizhou Huang; Zachary Steffen; Haozhi Wang; Kungang Li; Sudeep Dutta; Frederick Wellstood; Benjamin Palmer; |
| 598 | Suppression of Quasiparticle Poisoning in Transmon Qubits By Gap Engineering Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we use the so-called gap engineering to suppress tunneling of low-energy quasiparticles in Al-based transmon qubits, a leading platform for multi-qubit circuits. |
Plamen Kamenov; Thomas DiNapoli; Jordan Huang; Srivatsan Chakram; Michael Gershenson; |
| 599 | Improved Coherence in Optically Defined Niobium Tri-layer Josephson Junction Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While higher-critical-temperature Josephson junctions have been widely replaced by low-loss aluminum junctions for sensitive quantum circuitry, aluminum-based quantum circuits are still limited by quasiparticles to operation at temperatures below 0.1 Kelvin due to their low superconducting temperature. With significant recent interest in the exploration of diverse materials that can push these boundaries, we revisit niobium tri-layer junctions as the core components in qubits. |
Alexander Anferov; Kan-Heng Lee; Shannon Harvey; David Schuster; |
| 600 | Fabrication of Uniform Manhattan-style Transmon Qubits on 150 Mm Wafers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we fabricate identical Manhattan-style JJs across a 150 mm wafer to examine the spatial uniformity of their resistances. |
Liuqi Yu; Wei Liu; Lan-Hsuan Lee; Anton Komlev; Kunal Mitra; Seung-Goo Kim; Alexander Plyushch; Hasnain Ahmad; Mario Palma; Grégoire Coiffard; Lily Yang; Tianyi Li; |
| 601 | Van Der Waals Semiconductors As Josephson Junction Barriers for Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We characterize the dc and microwave electronic properties of vdW Josephson junctions with ultra-high-purity WSe 2 semiconductor barriers and discuss their potential as components for small-footprint, high-quality-factor superconducting qubits. |
Jesse Balgley; Abhinandan Antony; Xuanjing Chu; Ethan Arnault; Martin Gustafsson; James Hone; Kin Chung Fong; |
| 602 | Development of Transmon Qubit with Sn Based Hybrid Superconductor-semiconductor Nanowire Josephson Junction with Electrostatic Gate Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Tin (Sn) based hybrid superconductor-semiconductor nanowire josephson junctions show promise in further developing this electrostatic gate tunable transmon qubit platform with its larger induced superconducting gap [1] and high magnetic field compatibility [1] compared to Al. In this work we present our experimental progress on developing electrostatic gate tunable transmon qubit with these Sn based hybrid nanowire Josephson Junctions. |
Amrita Purkayastha; Param Patel; Azarin Zarassi; Amritesh Sharma; Mihir Pendharkar; Connor Dempsey; Kun Zuo; Chris Palmstrom; Michael Hatridge; Sergey Frolov; |
| 603 | Mitigation of Frequency Collisions in Scalable Superconducting Quantum Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate more than two-fold improvement in qubit frequency reproducibility, compared to our previous baseline, by making larger tunnel junctions and achieve ~40 MHz standard deviation in frequency. |
Amr Osman; Jorge Fernández-Pendás; Sandoko Kosen; Marco Scigliuzzo; Giovanna Tancredi; Christopher Warren; Anton Frisk Kockum; Jonas Bylander; Anita Roudsari; |
| 604 | Investigating The Impact of Air-bridge and Josephson-junction Fabrication Order on Transmon Performance in Circuit QED Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an investigation of the impact of changing fabrication order on transmon performance metrics. |
Matvey Finkel; Hendrik Martijn Veen; Sean van der Meer; Santiago Valles-Sanclemente; Leonardo DiCarlo; |
| 605 | Universal Trade-off Structure Between Symmetry, Irreversibility, and Quantum Coherence in Quantum Processes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Symmetry, irreversibility, and quantum coherence are foundational concepts in physics. Here, we present a universal trade-off relation that builds a bridge between these three concepts. |
Hiroyasu Tajima; Ryuji Takagi; Yui Kuramochi; Keiji Saito; |
| 606 | Quantum Fluctuation Theorem Under Continuous Measurement and Feedback Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we derive the quantum fluctuation theorem in an intriguing and unexplored situation, namely under continuous measurement and feedback. |
Toshihiro Yada; Nobuyuki Yoshioka; Takahiro Sagawa; |
| 607 | Weak Measurement Driven Thermal Machines Based on Coupled Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the role of weak measurement and feedback in determining the power and performance of coupled qubit-based thermal machines. |
Robert Czupryniak; Bibek Bhandari; Paulo Erdman; Andrew Jordan; |
| 608 | A Thermal State Conditioned on Pointer Bases and Its Properties Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce the conditional thermal state, which is a thermal state conditioned on the pointer bases, and discuss its resource-theoretic properties. |
Akira Sone; Diogo Soares-Pinto; Sebastian Deffner; |
| 609 | Quantum Absorption Refrigerator Based on 3-body Interaction Resets Qubit Autonomously Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the realization of a quantum absorption refrigerator based on a three-body interaction in superconducting circuits. |
Aamir Mohammed Ali; Paul Jamet Suria; José Marín Guzmán; Antonio; Claudia Castillo Moreno; Jeffrey Epstein; Nicole Yunger Halpern; Simone Gasparinetti; |
| 610 | Activation of Strong Local Passive States with Quantum Energy Teleportation Protocols Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present both the minimal theoretical model of activation with a fully unitary quantum energy teleportation protocol and the first experimental realization of local activation on a bipartite quantum system using nuclear magnetic resonance. |
Nayeli A. Rodriguez Briones; Hemant Katiyar; Raymond Laflamme; Eduardo Martín-Martínez; |
| 611 | Energy Conservation with Post-selection Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the energy change of the measurement apparatus when a quantum system is measured. |
Spencer Rogers; Andrew Jordan; |
| 612 | Entanglement Entropy Evolution and Random Matrices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discuss the time-evolution of the entanglement entropy in an isolated quantum system prepared in a factorized state. |
Rishabh Kumar; Eugenio Bianchi; |
| 613 | Thermal and Quantum Fluctuation Effects on Non-spherical Nuclei: The Case of Spin-1 System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we investigate the collective role of thermal and quantum fluctuations on non-equilibrium thermodynamics of a quantum system, specifcally, the quantum- thermodynamic description of spin-1 nuclei based on the concepts of quantum and statistical mechanics. |
Mulugeta Bekele; |
| 614 | Probing Coherent Quantum Thermodynamics Using A Trapped Ion Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we report an experimental measurement of the genuine quantum correction to the classical work fluctuation-dissipation relation (FDR). |
GIACOMO GUARNIERI; |
| 615 | Thermalisation in Non-Markovian Environments Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we use a variety of exact numerical methods such as time evolving matrix product operators (TEMPO) and the hierarchy of pure states (HOPS) to investigate how non-Markovian environments can perturb the thermal equilibrium state of strongly interacting many-body quantum systems. |
Ewen Lawrence; Peter Kirton; |
| 616 | Characterizing Symmetry-Protected Thermal Equilibrium By Work Extraction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we explain the concept of complete passivity under symmetry constraints. |
Yosuke Mitsuhashi; Kazuya Kaneko; Takahiro Sagawa; |
| 617 | Finite Temperature Quantum Walk of A Single Particle Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the dynamics of a single quantum particle in a d-dimensional space, generated by a local, time-independent Hamiltonian. |
Andrew Osborne; Chao Yin; Andrew Lucas; |
| 618 | Performance of Robust, High-Order Dynamical Decoupling Sequences on Superconducting Quantum Hardware Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A wide variety of dynamical decoupling sequences exists, ranging from simple first-order protection with uniform pulse intervals to robust, higher-order protection with non-uniform pulse interval sequences. Here, we explore and compare the performance of these various sequences on the Rigetti Aspen-M series of superconducting qubit chips. |
Amy Brown; Vinay Tripathi; Bram Evert; Alexander Hill; Xian Wu; Yuan Shi; Yujin Cho; Max Porter; Vasily Geyko; Ilon Joseph; Jonathan DuBois; Eyob Sete; Matthew Reagor; Daniel Lidar; |
| 619 | Characterizing Pulse Distortions and Crosstalks for Superconducting Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use superconducting qubits as a probe to estimate pulse distortions and crosstalks. |
Zhang Jiang; Ze-Pei Cian; Jonathan Gross; Dripto Debroy; Andre Petukhov; |
| 620 | Characterization and Benchmarking of A Phase-sensitive Two-qubit Gate Using Direct Digital Synthesis Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe the process of tuning and benchmarking the iSWAP gate, where the relative phase of the pulses is controlled via software. |
Mats Tholen; Riccardo Borgani; David Haviland; Jonas Bylander; Christian Križan; |
| 621 | Quantum Computing Systems and Results for Hybrid Quantum Classical Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will summarize recent advances for hybrid quantum-classical computer design and application benchmarking at Rigetti, including for our 80 qubit scale machines. |
Matthew Reagor; |
| 622 | Robust Hardware-efficient Implementation of A Continuous Two-qubit Gate Set for Transmon Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present an alternative implementation by extending the controlled-phase gate from [2], which is based on the resonant interaction between two flux-tunable transmons. |
Colin Scarato; Christoph Hellings; Kilian Hanke; Ants Remm; Stefania Lazar; Dante Colao Zanuz; Michael Kerschbaum; Nathan Lacroix; Johannes Herrmann; Francois Swiadek; Graham Norris; Mohsen Bahrami Panah; Alexander Flasby; Christopher Eichler; Andreas Wallraff; |
| 623 | Experimental Implementation and Characterization of A Virtual Two-qubit Gate Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present the experimental demonstration and characterization of the "virtual CZ" gate. |
Akhil Singh; Kosuke Mitarai; Yasunari Suzuki; Kentaro Heya; Yutaka Tabuchi; Keisuke Fujii; Yasunobu Nakamura; |
| 624 | Quasiparticle Cooling Via Engineered Dissipation in Floquet Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce an approach to realise non-trivial steady states in systems of many superconducting qubits out of equilibrium. |
Xiao Mi; Alexios Michailidis; Sara Shabani; Jerome Lloyd; Vadim Smelyanskiy; Dmitry Abanin; |
| 625 | Quantum Zeno Effect in Presence of Engineered Dissipation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present experiments to demonstrate how the decay of a photon from a cavity into an engineered environment can be reduced by exploiting the non-Markovian nature of the bath. |
Vidul Joshi; Akshay Koottandavida; Alessandro Miano; Rodrigo Cortiñas; Christopher Wang; Benjamin Chapman; Michel Devoret; |
| 626 | Characterization of Non-Markovian Noise Effects in Superconducting Qubits Using Pseudo-identity Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Existing methods to identify such effects involve low-level noise spectroscopy experiments. We develop a method based on mirrored pseudo-identity gates to characterise qubit-TLS interactions, and include them in a noise model to describe the effect of the TLS defects on the quantum circuits. |
Ivan Rungger; Deep Lall; Abhishek Agarwal; |
| 627 | Towards Testing Quantum Mechanics on NISQ Devices and Characterizing Non-Markovian Noise on IBM Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: We work towards testing the prediction of the emergent quantum mechanics (EmQM) by benchmarking a recently proposed protocol [1] on IBM’s quantum computers. EmQM hypothesizes that … |
Tsz Chun Wu; Kevin Slagle; |
| 628 | Waveguide Variational Quantum Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we capitalize on the long-range interactions naturally appearing between quantum emitters coupled to waveguide-QED setups [2-4] as a resource for designing a novel class of PQCs, which we benchmark against other hardware-agnostic PQCs. |
Cristian Tabares; Alberto Muñoz de las Heras; Luca Tagliacozzo; Diego Porras; Alejandro Gonzalez-Tudela; |
| 629 | A Co-design Superconducting Quantum Circuit for Simulating Nanoscale-NMR Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To operate the central resonator as an effective qubit, we have developed two types of qubit-resonator operations: a SWAP operation for shuffling around excitations and a CZ-gate for algorithmic execution. In this talk, we present the experimental progress towards digitally simulating a nanoscale NMR system [1] – such as an NV center coupled to multiple nuclear spins – on such a circuit. |
Hsiang-Sheng Ku; Daria Gusenkova; Jayshankar Nath; Nicola Wurz; Julia Lamprich; Stefan Pogorzalek; Florian Vigneau; Ping Yang; Frank Deppe; Antti Vepsäläinen; Alessandro Landra; Vladimir Milchakov; Caspar Ockeloen-Korppi; Wei Liu; Liuqi Yu; Lan-Hsuan Lee; Seung-Goo Kim; Hermanni Heimonen; Pedro Figueroa Romero; Manish Thapa; Inés de Vega; |
| 630 | Quantum Reservoir Computing with Superconducting Nonlinear Oscillators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present our development of a small quantum reservoir based on superconducting Kerr oscillators. |
Guilhem Ribeill; Leonardo Ranzani; Graham Rowlands; |
| 631 | Efficiency of Microwave-optical Transduction in Rare-earth Ions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate a microwave-optical transducer based on an erbium-doped crystal placed in both a microwave resonator and an optical cavity [1]. |
Thomas Smith; Gargi Tyagi; John Bartholomew; Andrew Doherty; |
| 632 | Characterization of An On-chip Microwave to Optical Transducer Using Ytterbium-doped Crystals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the current progress of an on-chip ytterbium-based microwave to optical transducer. |
Tian Xie; Rikuto Fukumori; Keith Schwab; Andrei Faraon; |
| 633 | Enhancement Via The Kittel Mode of A Magnet of The Microwave to Optical Quantum Transduction in A Rare-earth-doped Crystal Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe an approach to dramatically enhance the microwave coupling without diminishing the optical oscillator strength for Er$^{3+}$ ions. |
Tharnier Puel; Adam Turflinger; Sebastian Horvath; Jeff Thompson; Michael Flatté; |
| 634 | Wafer-scale Rare-earth Qubits with Milliseconds Coherence Time Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate epitaxially grown RE-doped thin films [1]with long coherence times, enabling large-scale device fabrication for quantum information processing. |
Shobhit Gupta; Yizhong Huang; Shawn Liu; Chao-Fan Wang; Natasha Tomm; Richard Warburton; Tanay Roy; David Schuster; Tian Zhong; |
| 635 | QUANTUM ACOUSTICS: Hong-Ou-Mandel Interference with Itinerant Surface Acoustic Phonons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe the classic HOM “dip” in coincident output phonons with a visibility of 0.910±0.013. |
Hong Qiao; Etienne Dumur; Gustav Andersson; Haoxiong Yan; Ming-Han Chou; Joel Grebel; Christopher Conner; Yash Joshi; Jacob Miller; Rhys Povey; Xuntao Wu; Andrew Cleland; |
| 636 | Phononic Bath Engineering of A Superconducting Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantum acoustic systems, in which superconducting qubits are coupled to quantized mechanical degrees of freedom, offer a unique paradigm for engineering dissipation to control quantum information using tailor-made phononic loss channels. Here we demonstrate quantum state preparation and stabilization of a superconducting transmon qubit through its dissipative interaction with an engineered phononic bath of piezoelectric surface acoustic waves. |
Joe Kitzman; Justin Lane; camryn undershute; Patrick Harrington; Niyaz Beysengulov; Camille Mikolas; Kater Murch; Johannes Pollanen; |
| 637 | High-impedance Surface Acoustic Wave Resonators on Lithium Niobate Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: They are robust against magnetic fields and stray photons, can operate from room temperature to cryogenic temperatures, and have low loss. We fabricate high-frequency SAWRs on lithium niobate with Gaussian mirrors and characterize them at various temperatures. |
Yadav Kandel; John Nichol; |
| 638 | Coherent Dynamics and Dissipation in A Phononic Open Quantum System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we describe an experiment in which the electro-mechanical response of a piezoelectric surface acoustic wave (SAW) device enables the realization of a phononic open quantum system that simultaneously samples both the strong and weakly coupled regimes of cQAD. |
camryn undershute; Joe Kitzman; Pranaya Kishore Rath; Justin Lane; Johannes Pollanen; |
| 639 | Non-Markovian Bath Engineering of A Superconducting Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we introduce a novel hybrid quantum system for coupling a superconducting qubit to a phononic bath composed of surface acoustic wave (SAW) phonons. |
Johannes Pollanen; Pranaya Kishore Rath; Joe Kitzman; camryn undershute; |
| 640 | Cavity Quantum Electrodynamics with Rydberg Atoms in Superconducting Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will describe a cryogenic cold atom experiment where we strongly couple an ensemble of Rb85 atoms to a novel, high-Q, three dimensional mmwave resonator with ample optical access for trapping and addressing atoms [1]. |
Aishwarya Kumar; |
| 641 | Quantum Emitter Optomechanics in A Hybrid WSe2-LiNbO3 Surface Acoustic Wave Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate cavity optomechanics with 2D materials, specifically monolayer WSe 2, embedded in a planar lithium niobate SAW resonator driven by superconducting electronics. |
Sahil Patel; Kamyar Parto; Michael Choquer; Sammy Umezawa; Landon Hellman; Daniella Polishchuk; Galan Moody; |
| 642 | Isolating Physical Mechanisms for Surface Lying Two-level System Loss Using Surface Acoustic Wave Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This study uses a series of 690MHz surface acoustic wave resonators fabricated on bulk Lithium Niobate with different surface treatments. |
Rachel Gruenke; |
| 643 | Crystallographic Suppression of Bulk Wave Coupling in Surface Acoustic Wave (SAW) Resonators on Quartz Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report on efforts to mitigate piezoelectric qubit losses in hybrid cQAD platforms through crystallographic engineering. |
Alec Emser; Brendon Rose; Cyril Metzger; Pablo Aramburu Sanchez; Konrad Lehnert; |
| 644 | Suppressing Quantum Errors By Scaling A Surface Code Logical Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report the measurement of logical qubit performance scaling across multiple code sizes, and demonstrate that our system of superconducting qubits has sufficient performance to overcome the additional errors from increasing qubit number. |
Julian Kelly; |
| 645 | Distributed Quantum Computation with Spins in Diamond Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present our progress towards realizing distributed error correction and computation with diamond spin qubits within the Fujitsu – QuTech collaboration. |
Tim Hugo Taminiau; |
| 646 | Tailored Quantum Error Correction for Large-scale Quantum Computing Under Structured Noise Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I’ll present two examples of recent work in tailoring quantum error correction, both based on the recently introduced XZZX surface code. |
Jahan Claes; |
| 647 | The Kerr Cat: Spectral Kissing and Phase-flip Robustness Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We experimentally observe the pairwise kissing via spectroscopy and the associated increase in the period-doubled coherent state lifetime, which exceeds 1 ms, a factor of 440 improvement over the bare lifetime of the constituent SNAIL-transmon circuit. |
Nicholas Frattini; Rodrigo Cortinas; Jayameenakshi Venkatraman; Xu Xiao; Qile Su; Chan Lei; Benjamin Chapman; Vidul Joshi; Steven Girvin; Shruti Puri; Michel Devoret; |
| 648 | Experimental Quantum Error Correction on Quantinuum Ion Trap Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will discuss our recent work in advancing the study of experimental QEC that is enabled by the unique capabilities of Quantinuum’s System Model H1 machines and software. |
Ciaran Ryan-Anderson; |
| 649 | Entanglement Features of Random Neural Network Quantum States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will discuss entanglement properties of an ensemble of neural network states represented by random restricted Boltzmann machines. |
Xiao-Qi Sun; Tamra Nebabu; Xizhi Han; Michael Flynn; Xiao-Liang Qi; |
| 650 | Training A Decoder to Retrieve Information from A T-doped Clifford Black Hole Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our work, we introduce a new quantum machine learning protocol that eliminates the latter requirement. |
Stefano Piemontese; Lorenzo Leone; Salvatore Francesco Emanuele Oliviero; Sarah True; Alioscia Hamma; |
| 651 | Implicit Differentiation of Variational Quantum Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show how to leverage implicit differentiation for gradient computation through variational quantum algorithms. |
Shahnawaz Ahmed; Nathan Killoran; Juan Carrasquilla; |
| 652 | Out-of-distribution Generalization for Learning Quantum Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we prove out-of-distribution generalization for the task of learning an unknown unitary. |
Matthias Caro; Hsin-Yuan Huang; Nic Ezzell; Joe Gibbs; Andrew Sornborger; Lukasz Cincio; Patrick Coles; Zoe Holmes; |
| 653 | Overparameterization of Realistic Quantum Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we study the effects of imposing constraints on the controls, such as bounding or sharing parameters across operators, and relevant noise channels are added after each time step. |
Matthew Duschenes; Juan Carrasquilla; Raymond Laflamme; |
| 654 | Differential Optimization of Quantum Circuits Dominated By Clifford Gates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose to use the classical differential architecture search method to optimize quantum circuits dominated by Clifford gates, which we call the Clifford+kT ansatz. |
Andi Gu; Hong-Ye Hu; Di Luo; Yi Tan; Taylor Patti; Nicholas Rubin; Ryan Babbush; Susanne Yelin; |
| 655 | Extraction of Hamiltonian Parameters from Quantum Ground States Using Variational Quantum Convolutional Neural Network Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work thus illustrates the potential of hybrid quantum-classical neural networks in regression tasks, as well as in extracting information from quantum states prepared by near-term variational algorithms. |
Jian Feng Kong; Jun Yong Khoo; |
| 656 | Learning Energy-Based Representations of Many-Body Quantum States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a new generative classical representation of many-body quantum states. |
Andrey Lokhov; Abhijith Jayakumar; Marc Vuffray; |
| 657 | Symmetry Exploitation in Quantum Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe the high permutative symmetry in quantum machine learning and use it as a tool to restrict the Hilbert space necessary for finding the solution. |
Maximilian Mansky; |
| 658 | Learning Quantum Systems Via Out-of-time-order Correlators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we introduce a new class of observables into the context of quantum learning—the out-of-time-order correlator—which we show can substantially improve the learnability of strongly-interacting systems by virtue of displaying informative physics at large times and distances. |
Masoud Mohseni; Thomas Schuster; Jordan Cotler; Murphy Yuezhen Niu; Thomas O’Brien; Jarrod McClean; |
| 659 | Decoding Imperfect Stabilizer Codes with Quantum Neural Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Motivated by practical realization of quantum codes on near-term devices, we develop a theoretical framework for decoding imperfect codes. |
Weishun Zhong; Oles Shtanko; Ramis Movassagh; |
| 660 | Decoding Surface Codes with Deep Reinforcement Learning and Probabilistic Policy Reuse Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Nevertheless, the device noise pattern may change over time, making trained decoder models ineffective. In this work, we propose a continual reinforcement learning method to tackle these decoding challenges. |
Elisha Siddiqui Matekole; Esther Ye; Ramya Iyer; Samuel Yen-Chi Chen; Tzu-Chieh Wei; |
| 661 | A Convergence Theory for Over-parameterized Variational Quantum Eigensolvers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We provide an analysis of the convergence of VQEs in the over-parameterization regime. |
Xuchen You; Shouvanik Chakrabarti; Xiaodi Wu; |
| 662 | Error-tolerant Quantum Convolutional Neural Networks for The Recognition of Symmetry-protected Topological Phases Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we construct quantum convolutional neural networks (QCNNs) based on the multiscale entanglement renormalization ansatz that can recognize different symmetry-protected topological phases of generalized cluster-Ising Hamiltonians in the presence of incoherent errors, simulating the effects of decoherence under NISQ conditions. |
Petr Zapletal; Nathan McMahon; Michael Hartmann; |
| 663 | Online Adaptive Estimation of Decoherence Timescales for A Single Qubit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present an adaptive Bayesian approach, based on a simple analytical update rule, to estimate the key decoherence timescales (T 1, T ∗ 2 and T 2) in a quantum system in real-time, using information gained in preceding experiments. |
Muhammad Junaid Arshad; Christiaan Bekker; Ben Haylock; Krzysztof Skrzypczak; Daniel White; Benjamin Griffiths; Joe Gore; Gavin Morley; Patrick Salter; Jason Smith; Inbar Zohar; Amit Finkler; Yoann Altmann; Erik Gauger; Cristian Bonato; |
| 664 | Flux-Pumped Josephson Traveling-Wave Parametric Amplifier with Reverse Isolation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will present a new type of TWPA which intends to mitigate spurious backaction by combining flux pumping and reverse isolation. |
Maxime Malnou; Jose Estrada; Benton Miller; Jose Aumentado; Florent Lecocq; |
| 665 | Perfect Phase Matching Via A Non-local Pump in Topological Josephson Traveling-wave Parametric Amplifiers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a realization of a truly directional and broadband Josephson traveling-wave parametric amplifier (JTWPA) using a homogeneous Josephson junction (JJ) array coupled to an auxiliary array of linear superconducting resonators [1]. |
Tomas Ramos; Álvaro Gómez-León; Juan Jose Garcia-Ripoll; Alejandro Gonzalez-Tudela; Diego Porras; |
| 666 | Microwave Quantum Optics with Josephson Traveling Wave Parametric Amplifiers : Generation of Two-mode Squeezed States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will present observation of broadband two-mode squeezing generated by exciting a Josephson TWPA [3]. |
Arpit Ranadive; Gwenael Legal; Giulio Cappelli; Sina Böhling; Luca Planat; Sebastien Leger; Dorian Fraudet; Olivier Buisson; Wiebke Guichard; Cécile Naud; Jose Aumentado; Florent Lecocq; Anja Metelmann; Nicolas Roch; Martina Esposito; |
| 667 | Intermodulation Distortion in A Josephson Traveling Wave Parametric Amplifier Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We suggest using large detunings between the pump and signal frequencies to mitigate crosstalk. |
Ants Remm; Sebastian Krinner; Nathan Lacroix; Christoph Hellings; François Swiadek; Graham Norris; Christopher Eichler; Andreas Wallraff; |
| 668 | Low-Loss Floquet Mode Josephson Traveling-Wave Parametric Amplifiers with Broadband Near-Ideal Intrinsic Quantum Efficiency Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present noise characterization and superconducting qubit measurement using a Floquet TWPA. |
Kaidong Peng; Jennifer Wang; Mahdi Naghiloo; Jeffrey Knecht; Jack Qiu; Alec Yen; Yufeng Ye; Gregory Cunningham; Katrina Sliwa; Bethany Niedzielski; Max Tan; Alicia Zang; Kyle Serniak; Mollie Schwartz; William Oliver; Kevin O’Brien; |
| 669 | Noise in Traveling-Wave Parametric Amplifiers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discuss experimental results of noise in a broadband traveling-wave parametric amplifier (TWPA) utilizing a four-wave mixing process. |
Matthew Bell; Francesco Vischi; |
| 670 | Parametric Amplifiers for High Fidelity, QND Qubit Measurement Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We desire these amplifiers to have high saturation power, large bandwidth, achieve the quantum limit on added noise, and be directional so that we can connect them directly to quantum circuits. In this talk I will discuss our efforts to master all these requirements in cavity-based, parametrically driven amplifiers. |
Michael Hatridge; |
| 671 | Progress Towards A Near Quantum-limited Josephson Travelling Wave Parametric Amplifier Based on Nb-Al/Al2O3-Nb Trilayer Technology Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the optimized process for the fabrication of the Nb-Al/Al 2O 3-Nb trilayer-based Josephson circuits and the results of the characterization of the fabricated devices. |
Evgenii Guzovskii; Hao Li; Yang Xu; Marco Scigliuzzo; Shingo Kono; Tobias Kippenberg; |
| 672 | Three-wave Mixing Josephson Traveling Wave Parametric Amplifiers with Integrated Parametric Pump Coupler Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe the integration of diplexers into our TWPA sample holders, followed by standalone testing at cryogenic temperatures. |
Visa Vesterinen; Tuomas Uusnäkki; Debopam Datta; Nils Tiencken; Leif Grönberg; Renan Pires Loreto; Om Prakash; Janne Lehtinen; Mika Prunnila; Joonas Govenius; |
| 673 | K Band Josephson Traveling Wave Parametric Amplifiers for Neutrino Mass Measurement Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This talk presents simulations of the frequency response and parasitics of high-frequency JTWPA chip designs, as well as how to optimize packaging to minimize extraneous modes and impedance mismatches. |
Jennifer Wang; Kaidong Peng; Wouter Van De Pontseele; Katrina Sliwa; Patrick Harrington; Yanjie Qiu; Kyle Serniak; Joseph Formaggio; William Oliver; Kevin O’Brien; |
| 674 | Nonlinear Amplifiers: Quantum Limits and Generalized Longitudinal Readout Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a class of nonlinear amplifiers that amplify any normal operator and add only a half-quantum of vacuum noise at the output. |
Joshua Combes; Birgitta Whaley; Jeffrey Epstein; |
| 675 | Quantum Non-demolition Measurement of The Transverse Component of A Qubit Using A Dissipative SNAIL Coupler Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We will present the measurement frame tune-up protocol, experiment data on measurement fidelity and efficiency, as well as the prospects for measuring multi-qubit operators by parametrically linking more than one qubit to a single SNAIL. |
Chao Zhou; Jacob Repicky; Mingkang Xia; Maria Mucci; Roger Mong; Michael Hatridge; |
| 676 | An Alternative Approach to Quantum Imaginary Time Evolution Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we provide an alternative approach to implement ITE. |
Pejman Jouzdani; Calvin Johnson; Eduardo Mucciolo; Ionel Stetcu; |
| 677 | Improving Success Probability of Imaginary-time Evolution on A Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present the simulation results employed by the proposed technique with a discussion of the computational overhead of the amplification circuits. |
Hirofumi Nishi; Taichi Kosugi; Yusuke Nishiya; Yu-ichiro Matsushita; |
| 678 | Efficient Quantum Time Dynamics Using The Yang-Baxter Equation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This study demonstrates how the Yang-Baxter equation (YBE) can be efficiently utilized to compress and produce a constant depth quantum circuit for efficient time dynamics of 1D lattice spin chains with nearest-neighbor interactions on real quantum devices. |
Sahil Gulania; Zichang He; Bo Peng; Niranjan Govind; Yuri Alexeev; |
| 679 | Algebraic Compression of Quantum Circuits for Hamiltonian Evolution: Part Two Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While powerful, the compression method is still missing several key features: it can only compress 1D chains, and cannot compress the controlled evolution that is necessary for computing wave function overlaps. Here, we present an advanced algebraic compression algorithm that overcomes these hurdles. |
Roel Van Beeumen; Efekan Kökcü; Lindsay Bassman; Natalia Wilson; Daan Camps; Bert de Jong; Alexander Kemper; |
| 680 | Optimal Hamiltonian Simulation for Time-periodic Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: It is a nontrivial and important question whether there exists an optimal algorithm for time-dependent cases whose resource is as large as that for time-independent cases. In our study, we focus on time-dependent Hamiltonians with periodicity, and obtain the answer to the above question. |
Kaoru Mizuta; |
| 681 | Quantum Time Dynamics of Qudit Hamiltonians Employing The Yang-Baxter Equation for Circuit Compression Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We derive the compressed circuit representations for different special cases of qudit Hamiltonians. |
Bo Peng; Andrey Khesin; A. Baris Ozguler; Oluwadara Ogunkoya; Matthew Otten; Yuri Alexeev; Niranjan Govind; |
| 682 | Imaginary-time Evolution with A Single Ancilla: First-quantized Eigensolver for Electronic Structure Calculation in Quantum Chemistry Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The probabilistic ITE (PITE) exploits measurements to implement nonunitary operations, it can avoid the restriction of dynamics to a low-dimensional subspace imposed by variational parameters unlike other types of ITE.In this study, we propose a new PITE approach that uses only one ancillary qubit. |
Yusuke Nishiya; Taichi Kosugi; Hirofumi Nishi; Yu-ichiro Matsushita; |
| 683 | Solving MAXCUT with Quantum Imaginary Time Evolution Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a method to solve the MaxCut problem efficiently based on quantum imaginary time evolution (QITE). |
Rizwanul Alam; George Siopsis; Rebekah Herrman; James Ostrowski; Phillip Lotshaw; Travis Humble; |
| 684 | Quantum State Preparation and Nonunitary Evolution with Diagonal Operators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a dilation-based algorithm to simulate nonunitary operations using probabilistic quantum computing with only one ancilla qubit. |
Anthony Schlimgen; |
| 685 | Simulating Scalar Field Theories on Quantum Computers with Limited Resources Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a quantum algorithm for implementing Φ4 lattice scalar field theory on qubit computers. |
Andy C. Y. Li; Alexandru Macridin; Stephen Mrenna; Panagiotis Spentzouris; |
| 686 | A Quantum Algorithm for The Linearized Vlasov Equation with Collisions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop a quantum algorithm for the linearized Vlasov equation with collisions (which offers a first-principles description of plasmas in the linear limit) and apply it to the canonical Landau damping problem. |
Abtin Ameri; Paola Cappellaro; Hari Krovi; Nuno Loureiro; Erika Ye; |
| 687 | Limitations of Quantum Algorithms for Nonlinear Partial Differential Equations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the limitations of obtaining an exponential quantum advantage for solving nonlinear partial differential equations (PDEs) on a quantum computer. |
Dylan Lewis; Balu Nadiga; Stephan Eidenbenz; |
| 688 | Interaction Energies on Fault-Tolerant Quantum Computers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we describe the design of a tangible quantum algorithm for computing the intermolecular interaction energy with SAPT for fault-tolerant quantum computers. |
Nikolaj Moll; Matthias Degroote; Elica Kyoseva; Raffaele Santagati; Michael Streif; Christofer Tautermann; Rachael Alsaadon; Cristian Cortes; Edward Hohenstein; Matthias Loipersberger; Robert Parrish; Alicia Welden; Sam Morley-Short; William Pol; Mark Steudtner; |
| 689 | Macromolecular Modelling Algorithms Harnessing Quantum Computation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This presentation reviews our past work showing that heteropolymer sequences can be robustly designed using adiabatic quantum annealers, and that the design problem can also be mapped to gate-based quantum computers. |
Vikram Mulligan; Mohit Pandey; Tristan Zaborniak; Alexey Galda; Hans Melo; |
| 690 | On The Sampling Complexity of Open Quantum Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present both analytical and numerical examples whose multi-time sampling is as complex as sampling from a many-body state that is classically hard. |
Isobel Aloisio; Gregory White; Charles Hill; Kavan Modi; |
| 691 | Two Superconducting Artificial Atoms Ultrastrongly Coupled to A Single Mode Resonator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Thus, we can make situation that the resonator energy = the energy of atom 1 + the energy of atom 2. |
Akiyoshi Tomonaga; Hiroto Mukai; Jaw-Shen Tsai; |
| 692 | Emulating 2 Qubits with A 4-level Superconducting Transmon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a variational quantum eigensolver using four levels of a superconducting transmon device. |
Shuxiang Cao; Mustafa Bakr; Giulio Campanaro; Simone Fasciati; James Wills; Boris Shteynas; Vivek Chidambaram; Peter Leek; |
| 693 | Designing and Driving Superconducting Qutrit Processors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we discuss ongoing efforts to understand and mitigate coherent and incoherent errors specific to quantum information processing with transmon qutrits. |
Rayleigh Parker; Zihao Wang; Machiel Blok; |
| 694 | High-Fidelity Qutrit Entanglement in Superconducting Circuits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present advanced control and characterization techniques in transmon qutrits that we leverage for high-fidelity qutrit entangling operations to improve both binary and ternary approaches to quantum computation. |
Noah Goss; Long Nguyen; Ravi Naik; Alexis Morvan; Brian Marinelli; Brad Mitchell; John Mark Kreikebaum; Larry Chen; Christian Jünger; David Santiago; Irfan Siddiqi; |
| 695 | Novel Superconducting Qubit Concepts for Higher Temperature Quantum Information Processing Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discuss several nonlinear resonator concepts in which the roles of linear and nonlinear elements are reversed vs. the transmon. |
John Miller; Martha Villagran; Johnathan Sanderson; Jarek Wosik; |
| 696 | Resonator-free Readout of A Unimon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work presents an important step for development of quantum logic for novel superconducting qubits. |
Vasilii Vadimov; Eric Hyyppä; Suman Kundu; Mikko Möttönen; Olavi Kiuru; Akseli Mäkinen; Alessandro Landra; Caspar Ockeloen-Korppi; Wei Liu; Tianyi Li; Jian Ma; Johannes Heinsoo; Juha Hassel; Kuan Tan; |
| 697 | Qubit Demonstrations at Frequencies Above Ten Gigahertz Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present our designs and measurement results on higher frequency qubits and associated electronics, including a systematic study of materials losses, qubit designs, and measurement challenges. |
Adam Sirois; Manuel Castellanos-Beltran; Peter Hopkins; David Olaya; John Biesecker; Samuel Benz; |
| 698 | Spectral Kissing and Its Dynamical Consequences in The Squeezed Kerr-nonlinear Oscillator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: But more than qubits, transmons are multilevel nonlinear oscillators that can be employed in the discovery of new fundamental physics. In this talk, we show that they can be used as simulators of excited state quantum phase transitions (ESQPTs), which are generalizations of quantum phase transitions to excited states. |
Jorge Chavez; Talía Lezama Mergold Love; Rodrigo Cortinas; Jayameenakshi Venkatraman; Michel Devoret; Victor Batista; Francisco Pérez-Bernal; Lea Santos; |
| 699 | Finite Bandwidth Gyrator on GKP-encoding Circuit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we will build on this work by implementing a finite bandwidth gyrator based on an impedance model built from temporal coupled-mode theory. |
Stefanus Tanuarta; Andrew Doherty; |
| 700 | Suppressing 1/f Magnetic Flux Noise in Superconducting Qubits with Weak Magnetic Fields (Part 1) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: One crucial missing piece to develop a microscopic theory of the noise mechanism is the response to external magnetic fields. |
David Rower; Lamia Ateshian; Max Hays; Kyle Serniak; Lauren Li; Bharath Kannan; Leon Ding; Dolev Bluvstein; Aziza Almanakly; Jochen Braumueller; David Kim; Alexander Melville; Bethany Niedzielski; Jonilyn Yoder; Mollie Schwartz; Terry Orlando; Joel Wang; Simon Gustavsson; Jeffrey Grover; Riccardo Comin; William Oliver; |
| 701 | Suppressing 1/f Magnetic Flux Noise in Superconducting Qubits with Weak Magnetic Fields (Part 2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present the first study of flux-noise-limited dephasing and 1/f noise spectroscopy in superconducting flux qubits subjected to in-plane magnetic fields up to B = 100 G. Notably, in addition to an increase in noise below 1 Hz, we observe a suppression of flux noise in the MHz range accompanied by an enhancement of echo T2 up to 100 G. |
Lamia Ateshian; David Rower; Max Hays; Kyle Serniak; Lauren Li; Bharath Kannan; Leon Ding; Dolev Bluvstein; Aziza Almanakly; Jochen Braumueller; David Kim; Alexander Melville; Bethany Niedzielski; Jonilyn Yoder; Mollie Schwartz; Terry Orlando; Joel Wang; Simon Gustavsson; Jeffrey Grover; Riccardo Comin; William Oliver; |
| 702 | Theory of Flux Noise in The Presence of An External Magnetic Field Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present calculations of flux noise in the presence of an external magnetic field. |
Jose Nava Aquino; Rogério de Sousa; |
| 703 | Fabrication of Thin Diamond Membranes By Ne Implantation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Compared to He smart-cut, we showed that the use of a heavier ion like Ne results in a ten-fold decrease in fabrication time without affecting the membrane quality. |
Luca Basso; Pauli Kehayias; Jacob Henshaw; Rong Cong; Michael Titze; Edward Bielejec; Tzu-Ming Lu; Michael Lilly; Andrew Mounce; |
| 704 | Optimizing Coherence of Germanium Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the magnetic field dependence of various qubit properties in order to find sweet spots for operation. |
Nico Hendrickx; |
| 705 | A Singlet-triplet Hole-spin Qubit in Planar Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate a hole-spin qubit using a planar CMOS silicon technology [2]. |
Scott Liles; Aaquib Shamim; Ik Kyeong Jin; Joseph Hillier; Matthew Rendell; Isaac Vorreiter; Wee Han Lim; Fay Hudson; Andrew Dzurak; Alex Hamilton; |
| 706 | Modeling Few-hole Quantum Dots in Ge/SiGe: G-factors and Qubit Properties Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a detailed numerical model for single- and few-hole quantum dots in Ge/SiGe qubit devices. |
Mitchell Brickson; Noah Jacobson; Leon Maurer; Tzu-Ming Lu; Dwight Luhman; Andrew Baczewski; |
| 707 | Towards 2-Qubit Operations of Hole Spins in Ge/Si Nanowires Above 1K Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on two highly electrically-tunable hole-spin-qubits in a Ge/Si core-shell nanowire device operated at 1.5 K We present efforts on improving the electrostatic environment of the double quantum dot (DQD) employing low-temperature annealing of the gate dielectric. |
Miguel Carballido; Simon Svab; Rafael Eggli; Pierre Chevalier Kwon; Simon Geyer; Rahel Kaiser; Leon Camenzind; Florian Froning; Erik P. A. M. Bakkers; Taras Patlatiuk; Stefano Bosco; J. Carlos Egues; Daniel Loss; Dominik Zumbuhl; |
| 708 | Effects of The Spin-orbit Coupling on Hole Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a theoretical analysis of the effects of the Rashba-type SO coupling on the hole spin qubits in a realistic quantum dot confinement with anisotropy and anharmonicity. |
Omadillo Abdurazakov; Charles Tahan; Yun-Pil Shim; |
| 709 | Spin-orbit Enhancement and G-factor Renormalization in Si/SiGe Heterostructures with Oscillating Ge Concentration Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that Ge concentration oscillations within the quantum well region of a Si/SiGe heterostructure can significantly enhance the spin-orbit coupling of the low-energy conduction-band valleys. |
Benjamin Woods; Mark Friesen; Robert Joynt; Mark Eriksson; |
| 710 | Fine-tuning The Quantum Well Thickness in 28Si/SiGe Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In gate-defined quantum dots, we study the effects of the new features of the material stack on crucial parameters for spin qubit operation, such as charge noise, valley splitting, and device stability. |
Davide Degli Esposti; Lucas Stehouwer; Davide Costa; Cornelius Carlsson; Larysa Tryputen; Sergey Amitonov; Amir Sammak; Giordano Scappucci; |
| 711 | Si/SiO2 Roughness: Variability, Tunability and Crosstalk in CMOS Spin Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Even though modern fabrication processes lead to reliable and stable oxides, their growth leads to an atomically rough interface. In this talk, we will explore the impact of this roughness on the most important qubit parameters. |
Jesus Cifuentes Pardo; Tuomo Tanttu; Jonathan Huang; Will Gilbert; Ensar Vahapoglu; Santiago Serrano; MengKe Feng; Arne Laucht; Chih-Hwan Yang; Christopher Escott; Rajib Rahman; Fay Hudson; Wee Han Lim; Andre Saraiva; Andrew Dzurak; |
| 712 | Progress in Development of The Silicon Spin Qubit Based Back-end for QuTech’s Quantum Inspire Platform Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present the developments on next generation spin qubit devices for Quantum Inspire. |
Tumi Makinwa; Nodar Samkharadze; Harold Meerwaldt; Pieter Eendebak; Yoram Vos; Önder Gül; Larysa Tryputen; Saurabh Karwal; Sergey Amitonov; James Kroll; Amir Sammak; Richard Versluis; Jasper Winters; Lieven Vandersypen; Peter Verhoeff; |
| 713 | Fast Singlet-triplet Qubit Driven By Magnetic Field Gradient in Isotopically Purified Silicon Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The Micromagnet technique has proven effective for manipulating spins in semiconductor quantum dot (QD) nanostructures, especially in silicon. |
Younguk Song; Jonginn Yun; Jehyun Kim; hyeongyu jang; Jaemin Park; Wonjin Jang; Hanseo Sohn; Satoru Miyamoto; Kohei Itoh; Dohun Kim; |
| 714 | Flip-Chip Gating of Heterostructure Quantum Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose to develop a flip-chip device platform containing all control and readout elements for characterization of lateral quantum dots in materials of interest without discrimination. |
Jay LeFebvre; Tzu-Ming Lu; Matthew Jordan; Michael Lilly; John Nogan; Dwight Luhman; Martin Rudolph; |
| 715 | High Bandwith High Sensitivity Electronic Thermometry in SiMOS Transistors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we use radio-frequency reflectometery to probe the interdot transitions between two adjacent gate-tunable islands inside a silicon nanowire with multiple gates. |
Victor Champain; Victor Champain; Vivien Schmitt; Benoit Bertrand; Heimanu Niebojewski; Louis Hutin; Maud Vinet; Xavier Jehl; Clemens Winkelmann; Silvano De Franceschi; Boris Brun-Barriere; |
| 716 | Andreev Bound State Dynamics in Phase- and Gate-tunable InAs Nanowire Josephson Weak Links Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: From the measurement of how Andreev qubits relax to the steady state after an excitation pulse, we extract the transition rates between configurations and analyse their dependence on the phase across the weak link and on the gate voltage controlling the electronic properties of the nanowire weak link. |
Manas Ranjan Sahu; Cyril Metzger; Francisco Matute-Cañadas; Peter Krogstrup; Jesper Nygard; Alfredo Yeyati; Marcelo Goffman; Cristian Urbina; Hugues Pothier; |
| 717 | Quasiparticle Poisoning of Superconducting Qubits from Resonant Absorption of Millimeter Wave Photons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we show that a dominant mechanism for quasiparticle poisoning is direct absorption of high-energy photons at the qubit junction. |
Chuan-Hong Liu; |
| 718 | A Hybrid 3D Qubit Architecture for Probing Quantum Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have designed and fabricated a transmon-like qubit with superconductor-TI-superconductor (S-TI-S) junctions in the 3D cavity architecture. |
Ramya Suresh; Sheng-Wen Huang; Botao Du; Peter Salisbury; Jian Liao; Yong P. Chen; Leonid Rokhinson; Ruichao Ma; |
| 719 | 3D Cavity Characterization of Niobium Thin Films in The Quantum Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To isolate the loss channel associated with the intrinsic properties of niobium thin film, we studied niobium film deposited onto the inner surface of a high-Q (>1010) 3D bulk niobium cavity and investigated the microwave dissipation over a wide temperature range down to ~ 10 mK. |
Bektur Abdistarov; Grigory Eremeev; Hani Elsayed-Ali; Anna Grassellino; Alexander Romanenko; |
| 720 | Extracting Contributions to Qubit Loss from Superconducting Microwave Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we measure Q i as a function of photon occupation in Al and Nb thin-film microwave resonators with different center conductor and gap widths. |
Shravan Patel; Spencer Weeden; Francisco Schlenker; Matthew Snyder; Emma Brann; Gabriel Spahn; David Harrison; Chuan-Hong Liu; Abigail Shearrow; Robert McDermott; |
| 721 | Microwave Vortex Dynamics in Superconducting Granular Aluminum Resonators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We measure granular aluminum resonators at different magnetic field strengths, resonator frequencies, and temperature. We compare the vortex response in this system with that in more conventional superconducting films. |
Clayton Larson; Kenneth Dodge; Vito Iaia; Eric Yelton; B.L.T. Plourde; |
| 722 | Characterizing Microwave Losses in Superconducting Quantum Circuits: Part 1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will present a method using on-chip multimode microwave stripline resonators to distinguish between sources of loss in superconducting quantum circuits. |
Yanhao Wang; Suhas Ganjam; Yao Lu; Archan Banerjee; Chan Lei; Lev Krayzman; Kim Kisslinger; Chenyu Zhou; Yichen Jia; Mingzhao Liu; Luigi Frunzio; Robert Schoelkopf; |
| 723 | Characterizing Microwave Losses in Superconducting Quantum Circuits: Part 2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will demonstrate the power of loss characterization by using multimode stripline resonators to predict and verify the decay times of transmon qubits, and calculate their sensitivity to various sources of loss. |
Suhas Ganjam; Yanhao Wang; Yao Lu; Archan Banerjee; Chan U Lei; Lev Krayzman; Kim Kisslinger; Chenyu Zhou; Yichen Jia; Mingzhao Liu; Luigi Frunzio; Robert Schoelkopf; |
| 724 | Mitigating Losses of Superconducting Qubits Coupled Strongly to Defect Modes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on the time and thermal-cycling dynamics of defect-mode configurations tracked for over 400 days in a single device. |
Dante Colao Zanuz; Jean-Claude Besse; Quentin Ficheux; Alexei Orekhov; Laurent Michaud; Kilian Hanke; Ants Remm; Alexander Flasby; Christoph Hellings; Michael Kerschbaum; Nathan Lacroix; Stefania Lazar; Graham Norris; Mohsen Panah; François Swiadek; Sebastian Krinner; Christopher Eichler; Andreas Wallraff; |
| 725 | Dynamics of Superconducting Qubit Coherence Times Due to Fluctuations of Two-level Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present an extensive analysis of the TLS distributions and their impact on T 1 times for different qubit sample materials and RF line configurations. |
Ivan Tsitsilin; Christian Schweizer; Franz Haslbeck; Federico Roy; Leon Koch; Max Werninghaus; Niklas Bruckmoser; Stefan Filipp; |
| 726 | Non-equilibrium Quasiparticle Trapping in Epitaxial Al-InAs Josephson Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study quasiparticle poisoning events by terminating a superconducting resonator to ground with an Al-InAs two-junction superconducting quantum interference device (SQUID). |
Bassel Heiba Elfeky; William Strickland; James Farmer; Sadman Shanto; Azarin Zarassi; William Schiela; Dylan Langone; Eli Levenson-Falk; Javad Shabani; |
| 727 | Quasiparticle Dynamics in Andreev Bound States Part 1: Phonon Interactions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present measurements of the dynamics of quasiparticles trapped in the ABS of a fully superconducting aluminum nanobridge Josephson junction. |
James Farmer; Sadman Shanto; Azarin Zarassi; Andre Kuo; Eli Levenson-Falk; |
| 728 | Quasiparticle Dynamics in Andreev Bound States Part 2: Photon Interactions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe enhanced excitation of quasiparticles when the junction is driven and observe both expected and anomalous dependence on the drive power. |
Sadman Shanto; James Farmer; Azarin Zarassi; Andre Kuo; Leonid Glazman; Eli Levenson-Falk; |
| 729 | Quasiparticle Calorimetry Using Dayem-Bridges Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we discuss a generation and detection scheme for quasiparticles based on thermal relaxation of mesoscopic Dayem-bridges. |
Kevin Ryan; Venkat Chandrasekhar; |
| 730 | Quantum Optimization with Rydberg Atom Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I discuss strategies to extend the classes of problems that can be efficiently encoded in Rydberg arrays by constructing explicit mappings from several generic optimization problems to maximum weighted independent set problems on unit-disk graphs, with at most a quadratic overhead in the number of qubits. |
Hannes Pichler; |
| 731 | Single-step Multi-qubit Operation Via The Fermi Scattering of A Sole Rydberg Electron Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I introduce a new type of interaction for multi-qubit operations that paves the way for a scalable Rydberg quantum simulator. |
Mohammadsadegh Khazali; Wolfgang Lechner; |
| 732 | Demonstration of Three- and Four-body Interactions Between Trapped-ion Spins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we experimentally demonstrate a new class of native interactions between trapped-ion qubits, extending conventional pairwise interactions to higher order. |
Or Katz; Lei Feng; Andrew Risinger; Christopher Monroe; Marko Cetina; |
| 733 | Phonon Induced Pure Dephasing in Color Centers from First Principles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we consider phonon-induced pure dephasing associated with the fluctuation of spin levels. |
Liang Tan; Jacopo Simoni; Vsevolod Ivanov; Thomas Schenkel; |
| 734 | Geometric Optimization Based on First-quantized Hamiltonian Using Imaginary-time Evolution on A Quantum Computer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a quantum algorithm employing the PITE technique for the geometry optimization of molecules based on the first quantization Hamiltonian. |
Yu-ichiro Matsushita; Hirofumi Nishi; Taichi Kosugi; |
| 735 | A Novel Noisy Intermediate-scale Quantum Computing Algorithm for Solving An N-vertex MaxCut Problem with Log(n) Qubits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, I present a novel quantum optimization algorithm which uses exponentially less qubits as compared to the QAOA while requiring a significantly reduced number of quantum operations to solve the MaxCut problem. |
Marko Rancic; |
| 736 | Evaluating The Efficiency of Ground State Preparation Algorithms Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce the criteria under which a GSP method is acceptable for the purposes of ground state energy estimation. |
Aikaterini Gratsea; Chong Sun; Peter Johnson; |
| 737 | Beyond The Variational Quantum Eigensolver: Approximating Solutions of 15 PDEs with A Variational Quantum Algorithm in Polynomial Time Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Specifically, with modification to the budget and other parameters that are required by either stochastic, deterministic, gradient-based, or constrained, optimizers for approximating the ground state of a cost function, we illustrate that the VQA can produce solution approximations to several variants of PDEs exhibiting oscillatory wave behavior, including generalized Camassa-Holm, KdV-Burgers, non-homogeneous KdV, generalized KdV, KdV, super KdV, and Benney-Luke equations. |
Pete Rigas; |