量子计算 · 全部实体（第 95 / 100 页）

本页收录第 9401–9500 条，共 10000 条 · 返回 量子计算 首页

• Quantum magnonics: The magnon meets the superconducting qubit
  The techniques of microwave quantum optics are applied to collective spin excitations in a macroscopic sphere of a ferromagnetic insulator. We demonstrate, in the single-magnon limit, strong coupling between a magnetostatic mode in the sphere and a microwave c…
  openalex Yutaka Tabuchi, Seiichiro Ishino, Atsushi Noguchi, T. Ishikawa 等 2016-07-26 置信度 0.72 MagnonPhysicsQubitPhotonCondensed matter physics
• Microwave-induced coupling of superconducting qubits
  We investigate the quantum dynamics of a system of two coupled superconducting qubits under microwave irradiation. We find that, with the qubits operated at the charge codegeneracy point, the quantum evolution of the system can be described by an effective Ham…
  openalex G. S. Paraoanu 2006-10-31 置信度 0.72 Superconducting quantum computingQubitPhysicsQuantum entanglementHamiltonian (control theory)
• Impact of ionizing radiation on superconducting qubit coherence
  openalex Vepsäläinen, AP, Karamlou, AH, Orrell, JL, Dogra, AS 等 2020-10-21 置信度 0.72 QubitPhysicsCoherence (philosophical gambling strategy)QuasiparticleSuperconductivity
• Noise spectroscopy through dynamical decoupling with a superconducting flux qubit
  openalex Jonas Bylander, Simon Gustavsson, Fei Yan, Fumiki Yoshihara 等 2011-05-08 置信度 0.72 DephasingQubitPhysicsQuantum decoherenceFlux qubit
• Demonstrating a Driven Reset Protocol for a Superconducting Qubit
  Qubit reset is crucial at the start of and during quantum information algorithms. We present the experimental demonstration of a practical method to force qubits into their ground state, based on driving appropriate qubit and cavity transitions. Our protocol, …
  openalex K. Geerlings, Zaki Leghtas, Ioan M. Pop, Shyam Shankar 等 2013-03-20 置信度 0.72 QubitTransmonReset (finance)Phase qubitCharge qubit
• Fast reset and suppressing spontaneous emission of a superconducting qubit
  Spontaneous emission through a coupled cavity can be a significant decay channel for qubits in circuit quantum electrodynamics. We present a circuit design that effectively eliminates spontaneous emission due to the Purcell effect while maintaining strong coup…
  openalex M. D. Reed, B. R. Johnson, A. A. Houck, L. DiCarlo 等 2010-05-17 置信度 0.72 QubitReset (finance)Flux qubitPhase qubitPhysics
• Superconducting Qubit Storage and Entanglement with Nanomechanical Resonators
  We propose a quantum computing architecture based on the integration of nanomechanical resonators with Josephson-junction phase qubits. The resonators are GHz-frequency, dilatational disk resonators, which couple to the junctions through a piezoelectric intera…
  openalex A.N. Cleland, M. R. Geller 2004-08-10 置信度 0.72 ResonatorQubitQuantum entanglementJosephson effectPhysics
• Multilevel quantum description of decoherence in superconducting qubits
  We present a multilevel quantum theory of decoherence for a general circuit realization of a superconducting qubit. Using electrical network graph theory, we derive a Hamiltonian for the circuit. The dissipative circuit elements (external impedances, shunt res…
  openalex Guido Burkard, R. H. Koch, David P. DiVincenzo 2004-02-11 置信度 0.72 Flux qubitCharge qubitPhysicsQubitQuantum mechanics
• Fully microwave-tunable universal gates in superconducting qubits with linear couplings and fixed transition frequencies
  A register of quantum bits with fixed transition frequencies and weakly coupled to one another through simple linear circuit elements is an experimentally minimal architecture for a small-scale superconducting quantum information processor. Presently, the know…
  openalex Chad Rigetti, Michel Devoret 2010-04-05 置信度 0.72 QubitPhysicsCoupling (piping)MicrowaveAmplitude
• Tunable Superconducting Qubits with Flux-Independent Coherence
  As superconducting-qubit architectures progress to more complex layouts, frequency crowding in qubit arrays increasingly hinders computing performance. Frequency-tunable qubits can assuage this problem, but are subject to the magnetic-flux noise that is ubiqui…
  openalex M. D. Hutchings, J. B. Hertzberg, Y. Liu, N. T. Bronn 等 2017-10-12 置信度 0.72 TransmonQubitDephasingPhysicsJosephson effect
• Rapid High-fidelity Multiplexed Readout of Superconducting Qubits
  Fast, high-fidelity readout of qubits is crucial in quantum computing. Quantum error correction in particular requires the repeated measurement of subsets of qubits without perturbing any others. Achieving this goal in a multiplexed readout architecture has be…
  openalex Johannes Heinsoo, Christian Kraglund Andersen, Ants Remm, Sebastian Krinner 等 2018-09-20 置信度 0.72 QubitPhysicsMultiplexingSuperconducting quantum computingCrosstalk
• Building logical qubits in a superconducting quantum computing system
  Abstract The technological world is in the midst of a quantum computing and quantum information revolution. Since Richard Feynman’s famous ‘plenty of room at the bottom’ lecture (Feynman, Engineering and Science 23 , 22 (1960)), hinting at the notion of novel …
  openalex Jay Gambetta, Jerry M. Chow, Matthias Steffen 2017-01-13 置信度 0.72 Quantum computerQubitSuperconducting quantum computingQuantum informationComputer science
• Heralded State Preparation in a Superconducting Qubit
  We demonstrate high-fidelity, quantum nondemolition, single-shot readout of a superconducting flux qubit in which the pointer state distributions can be resolved to below one part in 1000. In the weak excitation regime, continuous measurement permits the use o…
  openalex J. Johnson, Chris Macklin, D. H. Slichter, R. Vijay 等 2012-08-03 置信度 0.72 QubitPhysicsFlux qubitPhase qubitInitialization
• Quasiparticle Relaxation of Superconducting Qubits in the Presence of Flux
  Quasiparticle tunneling across a Josephson junction sets a limit for the lifetime of a superconducting qubit state. We develop a general theory of the corresponding decay rate in a qubit controlled by a magnetic flux. The flux affects quasiparticles tunneling …
  openalex Gianluigi Catelani, Jens Koch, Luigi Frunzio, Robert Schoelkopf 等 2011-02-16 置信度 0.72 QuasiparticleFlux qubitPhysicsJosephson effectCondensed matter physics
• Improved superconducting qubit coherence using titanium nitride
  We demonstrate enhanced relaxation and dephasing times of transmon qubits, up to ∼60 μs, by fabricating the interdigitated shunting capacitors using titanium nitride (TiN). Compared to qubits made with lift-off aluminum deposited simultaneously with the Joseph…
  openalex Josephine B. Chang, Michael R. Vissers, Antonio D. Córcoles, Martin Sandberg 等 2013-07-01 置信度 0.72 DephasingTransmonQubitCondensed matter physicsMaterials science
• Charge-insensitive qubit design derived from the Cooper pair box
  Short dephasing times pose one of the main challenges in realizing a quantum computer. Different approaches have been devised to cure this problem for superconducting qubits, a prime example being the operation of such devices at optimal working points, so-cal…
  openalex Jens Koch, Terri M. Yu, Jay Gambetta, Andrew Houck 等 2007-10-12 置信度 0.72 TransmonQubitCharge qubitDephasingCooper pair
• Experimental Demonstration of Fault-Tolerant State Preparation with Superconducting Qubits
  Robust quantum computation requires encoding delicate quantum information into degrees of freedom that are hard for the environment to change. Quantum encodings have been demonstrated in many physical systems by observing and correcting storage errors, but app…
  openalex Maika Takita, Andrew W. Cross, Antonio Córcoles, Jerry M. Chow 等 2017-10-31 置信度 0.72 TransmonQubitQuantum computerComputer scienceQuantum information
• Microwave-Induced Cooling of a Superconducting Qubit
  We demonstrated microwave-induced cooling in a superconducting flux qubit. The thermal population in the first-excited state of the qubit is driven to a higher-excited state by way of a sideband transition. Subsequent relaxation into the ground state results i…
  openalex Sergio O. Valenzuela, William D. Oliver, David M. Berns, Karl K. Berggren 等 2006-12-08 置信度 0.72 Flux qubitQubitPhase qubitCharge qubitExcited state
• Demonstration of Fidelity Improvement Using Dynamical Decoupling with Superconducting Qubits
  Quantum computers must be able to function in the presence of decoherence. The simplest strategy for decoherence reduction is dynamical decoupling (DD), which requires no encoding overhead and works by converting quantum gates into decoupling pulses. Here, usi…
  openalex Bibek Pokharel, Namit Anand, Benjamin Fortman, Daniel A. Lidar 2018-11-29 置信度 0.72 QubitSuperconductivityDecoupling (probability)FidelitySuperconducting quantum computing
• Parametric coupling for superconducting qubits
  We propose a scheme to couple two superconducting charge or flux qubits biased at their symmetry points with unequal energy splittings. Modulating the coupling constant between two qubits at the sum or difference of their two frequencies allows to bring them i…
  openalex Patrice Bertet, C. J. P. M. Harmans, J. E. Mooij 2006-02-14 置信度 0.72 QubitSuperconducting quantum computingPhysicsCoupling (piping)Superconductivity
• Dynamics of superconducting qubit relaxation times
  Abstract Superconducting qubits are a leading candidate for quantum computing but display temporal fluctuations in their energy relaxation times T 1 . This introduces instabilities in multi-qubit device performance. Furthermore, autocorrelation in these time f…
  openalex Malcolm S. Carroll, Sami Rosenblatt, Petar Jurcevic, Isaac Lauer 等 2022-11-17 置信度 0.72 QubitPhysicsErgodic theorySuperconductivityFlux qubit
• Digital Coherent Control of a Superconducting Qubit
  Superconducting qubits are conventionally controlled with shaped microwave pulses from a microwave carrier tone. This works well for small systems, but is difficult to scale up to the millions of qubits needed for a general-purpose quantum computer. Instead, t…
  openalex E. Leonard, M. A. Beck, J. Nelson, B.G. Christensen 等 2019-01-07 置信度 0.72 Flux qubitQubitPhysicsSuperconducting quantum computingPhase qubit
• High-Fidelity, High-Scalability Two-Qubit Gate Scheme for Superconducting Qubits
  High-quality two-qubit gate operations are crucial for scalable quantum information processing. Often, the gate fidelity is compromised when the system becomes more integrated. Therefore, a low-error-rate, easy-to-scale two-qubit gate scheme is highly desirabl…
  openalex Yuan Xu, Ji Chu, Jiahao Yuan, Jiawei Qiu 等 2020-12-09 置信度 0.72 QubitControlled NOT gateScalabilityFidelityQuantum computer
• Tunable Coupling Architecture for Fixed-Frequency Transmon Superconducting Qubits
  Implementation of high-fidelity 2-qubit operations is a key ingredient for scalable quantum error correction. In superconducting qubit architectures, tunable buses have been explored as a means to higher-fidelity gates. However, these buses introduce new pathw…
  openalex J. Stehlik, D. M. Zajac, Devin Underwood, Timothy Phung 等 2021-08-20 置信度 0.72 TransmonQubitFidelityScalabilityQuantum computer
• Demonstration of conditional gate operation using superconducting charge qubits
  openalex Tsuyoshi Yamamoto, Yu. A. Pashkin, O. V. Astafiev, Yasunobu Nakamura 等 2003-10-01 置信度 0.72 Superconducting quantum computingQubitQuantum computerPhysicsCluster state
• Measurement of Autler-Townes and Mollow Transitions in a Strongly Driven Superconducting Qubit
  We present spectroscopic measurements of the Autler-Townes doublet and the sidebands of the Mollow triplet in a driven superconducting qubit. The ground to first excited state transition of the qubit is strongly pumped while the resulting dressed qubit spectru…
  openalex Matthias Baur, Stefan Filipp, R. Bianchetti, J. M. Fink 等 2009-06-19 置信度 0.72 QubitPhysicsPhase qubitExcited stateCharge qubit
• Suppressing relaxation in superconducting qubits by quasiparticle pumping
  Dynamical error suppression techniques are commonly used to improve coherence in quantum systems. They reduce dephasing errors by applying control pulses designed to reverse erroneous coherent evolution driven by environmental noise. However, such methods cann…
  openalex Simon Gustavsson, Fei Yan, Gianluigi Catelani, Jonas Bylander 等 2016-12-09 置信度 0.72 DephasingQubitCoherence (philosophical gambling strategy)PhysicsQuasiparticle
• Superconducting Qubit with Purcell Protection and Tunable Coupling
  We present a superconducting qubit for the circuit quantum electrodynamics architecture that has a tunable qubit-resonator coupling strength g. This coupling can be tuned from zero to values that are comparable with other superconducting qubits. At g = 0, the …
  openalex Jay Gambetta, Andrew Houck, Alexandre Blais 2011-01-20 置信度 0.72 QubitPhysicsQuantum decoherenceFlux qubitPhase qubit
• Motional averaging in a superconducting qubit
  openalex Jian Li, Matti Silveri, K. S. Kumar, J.-M. Pirkkalainen 等 2013-01-29 置信度 0.72 TransmonDephasingPhysicsQubitRabi cycle
• Implementation of a quantum metamaterial using superconducting qubits
  openalex P. Macha, G. Oelsner, J. Reiner, Michael Marthaler 等 2014-10-14 置信度 0.72 QubitPhysicsMetamaterialFlux qubitSuperconducting quantum computing
• Sisyphus cooling and amplification by a superconducting qubit
  Laser cooling of the atomic motion paved the way for remarkable achievements in the fields of quantum optics and atomic physics, including Bose-Einstein condensation and the trapping of atoms in optical lattices. More recently superconducting qubits were shown…
  openalex M. Grajcar, S. H. W. van der Ploeg, A. Izmalkov, E. Il’ichev 等 2008-07-06 置信度 0.72 PhysicsQubitFlux qubitCharge qubitRabi cycle
• Gated Conditional Displacement Readout of Superconducting Qubits
  We have realized a new interaction between superconducting qubits and a readout cavity that results in the displacement of a coherent state in the cavity, conditioned on the state of the qubit. This conditional state, when it reaches the cavity-following, phas…
  openalex Steven Touzard, Angela Kou, N. E. Frattini, Volodymyr Sivak 等 2019-02-25 置信度 0.72 QubitPhysicsSuperconducting quantum computingDephasingFlux qubit
• High-Coherence Hybrid Superconducting Qubit
  We report quantum coherence measurements of a superconducting qubit whose design is a hybrid of several existing types. Excellent coherence times are found: T2∼T1∼1.5 μs. The topology of the qubit is that of a traditional three-junction flux qubit, but it has …
  openalex Matthias Steffen, Shwetank Kumar, David P. DiVincenzo, John Rozen 等 2010-09-01 置信度 0.72 QubitFlux qubitCharge qubitPhase qubitPhysics
• Dynamical decoupling for superconducting qubits: A performance survey
  Dynamical decoupling (DD) is perhaps the simplest and least resource-intensive error-suppression strategy for improving quantum computer performance. Here we report on a large-scale survey of the performance of 60 different DD sequences from ten families, incl…
  openalex Nic Ezzell, Bibek Pokharel, Lina Tewala, Gregory Quiroz 等 2023-12-14 置信度 0.72 Dynamical decouplingQubitDecoupling (probability)Interval (graph theory)Quantum
• Fast Tunable Coupler for Superconducting Qubits
  A major challenge in the field of quantum computing is the construction of scalable qubit coupling architectures. Here, we demonstrate a novel tunable coupling circuit that allows superconducting qubits to be coupled over long distances. We show that the inter…
  openalex Radoslaw C. Bialczak, M. Ansmann, M. Hofheinz, M. Lenander 等 2011-02-09 置信度 0.72 QubitSuperconducting quantum computingPhysicsQuantum computerCoupling (piping)
• Coherent State Evolution in a Superconducting Qubit from Partial-Collapse Measurement
  Measurement is one of the fundamental building blocks of quantum-information processing systems. Partial measurement, where full wavefunction collapse is not the only outcome, provides a detailed test of the measurement process. We introduce quantum-state tomo…
  openalex Nadav Katz, M. Ansmann, Radoslaw C. Bialczak, Erik Lucero 等 2006-06-08 置信度 0.72 QubitPhysicsFidelityQuantum computerQuantum mechanics
• Materials Origins of Decoherence in Superconducting Qubits
  Superconducting integrated circuits incorporating Josephson junctions are an attractive candidate for scalable quantum information processing in the solid state. The strong nonlinearity of the Josephson effect enables one to tailor an anharmonic potential and …
  openalex R. McDermott 2009-01-20 置信度 0.72 Superconducting quantum computingQubitJosephson effectDephasingFlux qubit
• High Pressure Effects on Superconductivity
  The review is devoted to a discussion of the effects of high pressure imposed on superconducting materials. Low-temperature superconductors, high-temperature superconducting cuprates, and some unconventional superconducting compounds are investigated. Experime…
  arxiv B. Lorenz, C. W. Chu 2004-10-14T19:01:20Z 置信度 0.78 cond-mat.supr-concond-mat.str-el
• Theory of quasiparticle generation by microwave drives in superconducting qubits
  Microwave drives play a central role in the control of superconducting quantum circuits, enabling qubit gates, readout, and parametric interactions. As the drive frequencies are typically an order of magnitude smaller than (twice) the superconducting gap, it i…
  arxiv Shoumik Chowdhury, Max Hays, Shantanu R. Jha, Kyle Serniak 等 2025-05-01T18:07:13Z 置信度 0.78 quant-phcond-mat.mes-hallcond-mat.supr-con
• Protecting Superconducting Qubits with Universal Quantum Degeneracy Point
  Low-frequency noise can induce serious decoherence in superconducting qubits. Due to its diverse physical origin, such noise can couple with the qubits either as transverse or as longitudinal noise. Here, we present a universal quantum degeneracy point approac…
  arxiv X. -H. Deng, Y. Hu, Lin Tian 2013-08-22T17:24:29Z 置信度 0.78 quant-phcond-mat.mes-hall
• Integration of topological insulator Josephson junctions in superconducting qubit circuits
  The integration of semiconductor Josephson junctions (JJs) in superconducting quantum circuits provides a versatile platform for hybrid qubits and offers a powerful way to probe exotic quasiparticle excitations. Recent proposals for using circuit quantum elect…
  arxiv Tobias W. Schmitt, Malcolm R. Connolly, Michael Schleenvoigt, Chenlu Liu 等 2020-07-08T16:05:13Z 置信度 0.78 cond-mat.mes-hallcond-mat.mtrl-scicond-mat.supr-conquant-ph
• Single-sideband modulator for frequency domain multiplexing of superconducting qubit readout
  We introduce and experimentally characterize a superconducting single-sideband modulator compatible with cryogenic microwave circuits, and propose its use for frequency domain multiplexing of superconducting qubit readout. The monolithic single-quadrature modu…
  arxiv Benjamin J. Chapman, Eric I. Rosenthal, Joseph Kerckhoff, Leila R. Vale 等 2017-03-06T00:21:09Z 置信度 0.78 quant-phcond-mat.supr-con
• Suppression of crosstalk in superconducting qubits using dynamical decoupling
  Currently available superconducting quantum processors with interconnected transmon qubits are noisy and prone to various errors. The errors can be attributed to sources such as open quantum system effects and spurious inter-qubit couplings (crosstalk). The ZZ…
  arxiv Vinay Tripathi, Huo Chen, Mostafa Khezri, Ka-Wa Yip 等 2021-08-10T09:16:05Z 置信度 0.78 quant-ph
• Quantum dark soliton (qubits) in Bose Einstein condensates
  We study the possibility of using dark soliton in quasi one dimensional Bose Einstein condensates to produce two level system (qubits) by exploiting the intrinsic nonlinear and the coherent nature of the matter waves. We calculate the soliton spectrum and the …
  arxiv Muzzamal I. Shaukat, Eduardo V. Castro, Hugo Terças 2017-01-26T23:49:35Z 置信度 0.78 cond-mat.quant-gasquant-ph
• Digital feedback in superconducting quantum circuits
  This chapter covers the development of feedback control of superconducting qubits using projective measurement and a discrete set of conditional actions, here referred to as digital feedback. We begin with an overview of the applications of digital feedback in…
  arxiv D. Ristè, L. DiCarlo 2015-08-06T13:21:40Z 置信度 0.78 quant-phcond-mat.mes-hall
• Weak Measurement and Feedback in Superconducting Quantum Circuits
  We describe the implementation of weak quantum measurements in superconducting qubits, focusing specifically on transmon type devices in the circuit quantum electrodynamics architecture. To access this regime, the readout cavity is probed with on average a sin…
  arxiv K. W. Murch, R. Vijay, I. Siddiqi 2015-07-16T15:22:02Z 置信度 0.78 quant-ph
• Superconducting Spin Qubits
  We propose and theoretically investigate spin superconducting qubits. Spin superconducting qubit consists of a single spin confined in a Josephson junction. We show that owing to spin-orbit interaction, superconducting difference across the junction can polari…
  arxiv C. Padurariu, Yu. V. Nazarov 2009-12-19T17:37:55Z 置信度 0.78 cond-mat.mes-hall
• Majorana Superconducting Qubit
  We propose a platform for universal quantum computation that uses conventional $s$-wave superconducting leads to address a topological qubit stored in spatially separated Majorana bound states in a multi-terminal topological superconductor island. Both the man…
  arxiv Constantin Schrade, Liang Fu 2018-03-02T19:00:00Z 置信度 0.78 cond-mat.mes-hall
• Universal control of four singlet-triplet qubits
  The coherent control of interacting spins in semiconductor quantum dots is of strong interest for quantum information processing as well as for studying quantum magnetism from the bottom up. Here, we present a $2\times4$ germanium quantum dot array with full a…
  arxiv Xin Zhang, Elizaveta Morozova, Maximilian Rimbach-Russ, Daniel Jirovec 等 2023-12-26T16:07:13Z 置信度 0.78 cond-mat.mes-hallquant-ph
• Superconductivity in the elements, alloys and simple compounds
  We give a brief review of superconductivity at ambient pressure in elements, alloys, and simple three-dimensional compounds. Historically these were the first superconducting materials studied, and based on the experimental knowledge gained from them the BCS t…
  arxiv G. W. Webb, F. Marsiglio, J. E. Hirsch 2015-02-16T21:16:00Z 置信度 0.78 cond-mat.supr-con
• Superconductivity of magnesium diboride
  Over the past 14 years MgB2 has gone from a startling discovery to a promising, applied superconductor. In this article we present a brief overview of the synthesis and the basic superconducting properties of this remarkable compound. In particular, the effect…
  arxiv Sergey L. Bud'ko, Paul C. Canfield 2015-01-27T22:12:54Z 置信度 0.78 cond-mat.supr-con
• A metastable superconducting qubit
  We propose a superconducting qubit design, based on a tunable RF-SQUID and nanowire kinetic inductors, which has a dramatically reduced transverse electromagnetic coupling to its environment, so that its excited state should be metastable. If electromagnetic i…
  arxiv Andrew J. Kerman 2009-09-22T20:28:51Z 置信度 0.78 cond-mat.mes-hallcond-mat.supr-con
• Comment on "Quantum Teleportation of Eight-Qubit State via Six-Qubit Cluster State"
  Recently, Zhao et al., (Int. J. Theor. Phys. 57, 516-522 (2018)) have proposed a scheme for quantum teleportation of an eight-qubit quantum state using a six qubit cluster state. In this comment, it's shown that the quantum resource (multi-partite entangled st…
  arxiv Mitali Sisodia, Anirban Pathak 2018-04-05T10:57:24Z 置信度 0.78 quant-ph
• Superconducting materials classes: introduction and overview
  An introduction to and overview of the contents of this Special Issue are given. 32 classes of superconducting materials are discussed, grouped under the three categories "conventional", "possibly unconventional" and "unconventional" according to the mechanism…
  arxiv J. E. Hirsch, M. B. Maple, F. Marsiglio 2015-04-13T20:00:28Z 置信度 0.78 cond-mat.supr-con
• Quantum Zeno effect with a superconducting qubit
  Detailed schemes are investigated for experimental verification of Quantum Zeno effect with a superconducting qubit. A superconducting qubit is affected by a dephasing noise whose spectrum is 1/f, and so the decay process of a superconducting qubit shows a nat…
  arxiv Yuichiro Matsuzaki, Shiro Saito, Kosuke Kakuyanagi, Kouichi Semba 2010-06-10T19:57:04Z 置信度 0.78 quant-phcond-mat.supr-con
• Superconducting qubits
  From a physicist's standpoint, the most interesting part of quantum computing research may well be the possibility to probe the boundary between the quantum and the classical worlds. The more macroscopic are the structures involved, the better. So far, the mos…
  arxiv Alexandre Zagoskin, Alexandre Blais 2008-05-01T23:45:36Z 置信度 0.78 cond-mat.supr-concond-mat.mes-hall
• Local Unitary Invariants for N-qubit Pure State
  We obtain local unitary invariant polynomials for N qubit quantum state from first principles. A basic unit of entanglement, referred to as negativity font, is defined as a two by two matrix of probability amplitudes that determines the negative eigen value of…
  arxiv S. Shelly Sharma, N. K. Sharma 2010-08-05T15:08:11Z 置信度 0.78 quant-ph
• Dynamics of nonequilibrium quasiparticles in a double superconducting tunnel junction detector
  We study a class of superconductive radiation detectors in which the absorption of energy occurs in a long superconductive strip while the redout stage is provided by superconductive tunnel junctions positioned at the two ends of the strip. Such a device is ca…
  arxiv Mikkel Ejrnaes, Ciro Nappi, Roberto Cristiano 2005-02-02T11:20:32Z 置信度 0.78 cond-mat.supr-con
• Engineering Superconducting Phase Qubits
  The superconducting phase qubit combines Josephson junctions into superconducting loops and defines one of the promising solid state device implementations for quantum computing. While conventional designs are based on magnetically frustrated superconducting l…
  arxiv G. Blatter, V. B. Geshkenbein, L. Ioffe 1999-12-09T17:01:52Z 置信度 0.78 cond-mat.mes-hall
• Open Quantum System Approaches to Superconducting Qubits
  Random and uncontrollable noises from the environment during the design and measurement of superconducting qubits lead to limitations in qubit coherence time and gate fidelity, which is a major challenge in the current state of the art for superconducting quan…
  arxiv Hamid Reza Naeij 2024-02-29T15:17:25Z 置信度 0.78 quant-ph
• Superconducting Materials for Microwave Kinetic Inductance Detectors
  The superconducting materials that make up an MKID have a significant effect on its performance. The $T_\textrm{c}$ and normal state resistivity $ρ_\textrm{N}$ of the film determine the penetration depth $λ$ and therefore how much kinetic inductance it has. Th…
  arxiv Benjamin A. Mazin 2020-04-29T00:55:13Z 置信度 0.78 astro-ph.IMcond-mat.mtrl-scicond-mat.supr-con
• Macroscopic Many-Qubit Interactions in Superconducting Flux Qubits
  Superconducting flux qubits are considered to investigate macroscopic many-qubit interactions. Many-qubit states based on current states can be manipulated through the current-phase relation in each superconducting loop. For flux qubit systems comprised of $N$…
  arxiv Sam Young Cho, Mun Dae Kim 2007-03-20T02:20:35Z 置信度 0.78 cond-mat.supr-concond-mat.mes-hall
• Physical Design of Superconducting Magnet for ADS Injection I
  Superconducting solenoid magnet prototype for ADS Injection I had been designed and fabricated, and also had been tested in liquid Helium state inside a vertical Dewar in Haerbin institute of Technology in Nov. 2012. The design current is 210A, when the test c…
  arxiv Quan-ling Peng, Bing Wang, Yuan Chen, Xiang-chen Yang 2013-05-14T02:49:57Z 置信度 0.78 physics.acc-ph
• SWAP gate between a Majorana qubit and a parity-protected superconducting qubit
  High fidelity quantum information processing requires a combination of fast gates and long-lived quantum memories. In this work, we propose a hybrid architecture, where a parity-protected superconducting qubit is directly coupled to a Majorana qubit, which pla…
  arxiv Luca Chirolli, Norman Y. Yao, Joel E. Moore 2022-05-03T10:41:27Z 置信度 0.78 cond-mat.mes-hallcond-mat.supr-conquant-ph
• Nondestructive readout for a superconducting flux qubit
  We present a new readout method for a superconducting flux qubit, based on the measurement of the Josephson inductance of a superconducting quantum interference device that is inductively coupled to the qubit. The intrinsic flux detection efficiency and back-a…
  arxiv A. Lupascu, C. J. M. Verwijs, R. N. Schouten, C. J. P. M. Harmans 等 2003-11-21T17:24:11Z 置信度 0.78 cond-mat.supr-concond-mat.mes-hallquant-ph
• Bogoliubov Quasiparticles in Superconducting Qubits
  Extending the qubit coherence times is a crucial task in building quantum information processing devices. In the three-dimensional cavity implementations of circuit QED, the coherence of superconducting qubits was improved dramatically due to cutting the losse…
  arxiv Leonid I. Glazman, Gianluigi Catelani 2020-03-09T19:09:00Z 置信度 0.78 cond-mat.mes-hallcond-mat.supr-conquant-ph
• Influence of Impurity on the Rate of Single Photon Superradiance in Disordered N Qubit Chain
  We investigate the rate of superradiant emission for a number of artificial atoms (qubits) embedded in a one-dimensional open waveguide. More specifically, we study the 1D (N+1)- qubit chain where N qubits are identical in respect to their excitation frequency…
  arxiv Ya. S. Greenberg, A. G. Moiseev 2018-06-10T06:57:34Z 置信度 0.78 cond-mat.mes-hall
• Enhanced energy relaxation process of quantum memory coupled with a superconducting qubit
  For quantum information processing, each physical system has different advantage for the implementation and so hybrid systems to benefit from several systems would be able to provide a promising approach. One of the common hybrid approach is to combine a super…
  arxiv Yuichiro Matsuzaki, Hayato Nakano 2011-05-19T06:36:45Z 置信度 0.78 quant-ph
• Interface Piezoelectric Loss in Superconducting Qubits
  Dissipation remains a central obstacle to improving superconducting quantum circuits, yet the microscopic origins of loss in widely used materials platforms are not fully understood. Here, we report the observation of interface piezoelectricity-induced dissipa…
  arxiv Haoxin Zhou, Kangdi Yu, Yashwanth Balaji, Sanjit Shirol 等 2026-05-15T02:46:29Z 置信度 0.78 quant-phcond-mat.mes-hall
• Simulating kaon mixing with Josephson phase qubits
  Superconducting circuits with Josephson junctions distinguish themselves from other types of quantum computing architectures by having easily controllable metastable computational states (the so-called phase qubits) with a very large ratio of their respective …
  arxiv Andrei Galiautdinov 2024-09-07T20:13:39Z 置信度 0.78 quant-ph
• Epilogue: Superconducting Materials Past, Present and Future
  Experimental contributors to the field of Superconducting Materials share their informal views on the subject.
  arxiv C. W. Chu, P. C. Canfield, R. C. Dynes, Z. Fisk 等 2015-04-09T20:05:44Z 置信度 0.78 cond-mat.supr-con
• Control the qubit-qubit coupling with double superconducting resonators
  We experimentally studied the switching off processes in the double-resonator coupler superconducting quantum circuit. In both frequency and time-domain, we observed the variation of qubit-qubit effective coupling by tuning the frequency differences between qu…
  arxiv Hui Wang, Rui Wang, Daichi Sugiyama, Chih-Yao Shih 等 2026-02-12T04:49:26Z 置信度 0.78 quant-ph
• Topological quantum memory interfacing atomic and superconducting qubits
  We propose a scheme to manipulate a topological spin qubit which is realized with cold atoms in a one-dimensional optical lattice. In particular, by introducing a quantum opto-electro-mechanical interface, we are able to first transfer a superconducting qubit …
  arxiv Zheng-Yuan Xue, Zhang-qi Yin, Yan Chen, Z. D. Wang 等 2013-01-17T15:59:47Z 置信度 0.78 quant-ph
• Digital coherent control of a superconducting qubit
  High-fidelity gate operations are essential to the realization of a fault-tolerant quantum computer. In addition, the physical resources required to implement gates must scale efficiently with system size. A longstanding goal of the superconducting qubit commu…
  arxiv Edward Leonard, Matthew A. Beck, JJ Nelson, Brad G. Christensen 等 2018-06-20T19:02:25Z 置信度 0.78 quant-phcond-mat.supr-con
• A Superconducting Persistent Current Qubit
  We present the design of a superconducting qubit that has circulating currents of opposite sign as its two states. The circuit consists of three nano-scale aluminum Josephson junctions connected in a superconducting loop and controlled by magnetic fields. The …
  arxiv T. P. Orlando, J. E. Mooji, Lin Tian, Caspar H. van der Wal 等 1999-08-19T22:23:55Z 置信度 0.78 cond-matquant-ph
• Encoding a qubit with Majorana modes in superconducting circuits
  Majorana fermions are long-sought exotic particles that are their own antiparticles. Here we propose to utilize superconducting circuits to construct two superconducting-qubit arrays where Majorana modes can occur. A so-called Majorana qubit is encoded by usin…
  arxiv J. Q. You, Z. D. Wang, Wenxian Zhang, Franco Nori 2011-08-18T10:52:01Z 置信度 0.78 cond-mat.supr-conquant-ph
• Determination of Superconducting Gap of SmFeAsFxO1-x Superconductors by Andreev Reflection Spectroscopy
  The superconducting gap in FeAs-based superconductor SmFeAs(O1-xFx) (x = 0.15 and 0.30) and the temperature dependence of the sample with x = 0.15 have been measured by Andreev reflection spectroscopy. The intrinsic superconducting gap is independent of contac…
  arxiv T. Y. Chen, S. X. Huang, Z. Tesanovic, R. H. Liu 等 2009-02-23T21:09:22Z 置信度 0.78 cond-mat.supr-con
• Non-Markovian dynamics of a superconducting qubit in a phononic bandgap
  The overhead to construct a logical qubit from physical qubits rapidly increases with the decoherence rate. Current superconducting qubits reduce dissipation due to two-level systems (TLSs) by using large device footprints. However, this approach provides part…
  arxiv Mutasem Odeh, Kadircan Godeneli, Eric Li, Rohin Tangirala 等 2023-12-02T05:08:32Z 置信度 0.78 quant-ph
• Monogamy constraints on entanglement of four-qubit pure states
  We report a set of monogamy constraints on one-tangle, two-tangles, three-tangles and four-way correlations of a general four-qubit pure state. It is found that given a two-qubit marginal state $ρ$ of a four qubit pure state $\left\vert Ψ_{4}\right\rangle $, t…
  arxiv S. Shelly Sharma 2020-02-03T13:14:38Z 置信度 0.78 quant-ph
• Thermal entanglement of superconducting qubits for arbitrary interaction strength
  We investigate the thermal entanglement in two superconducting qubits for arbitrary interaction strength and ground state frequencies. We calculate the concurrence of the system to quantify the thermal entanglement. We suggest a scheme, where an external tunab…
  arxiv Areeda Ayoub, Javed Akram 2022-11-01T12:22:31Z 置信度 0.78 quant-ph
• A Two Qubit Logic Gate in Silicon
  Quantum computation requires qubits that can be coupled and realized in a scalable manner, together with universal and high-fidelity one- and two-qubit logic gates \cite{DiVincenzo2000, Loss1998}. Strong effort across several fields have led to an impressive a…
  arxiv M. Veldhorst, C. H. Yang, J. C. C. Hwang, W. Huang 等 2014-11-21T03:55:26Z 置信度 0.78 cond-mat.mes-hallquant-ph
• A Superconducting instability in the surface of a topological insulator
  It is argued that a superconducting instability appears in the electronic states on the surface of a topological insulator due purely to electromagnetic interactions. The discussion of this instability is based on the analysis of the effective Coulomb interact…
  arxiv Alberto Cortijo 2010-12-09T14:11:47Z 置信度 0.78 cond-mat.supr-concond-mat.str-el
• Quantum error correction for beginners.
  Quantum error correction (QEC) and fault-tolerant quantum computation represent one of the most vital theoretical aspects of quantum information processing. It was well known from the early developments of this exciting field that the fragility of coherent qua…
  europepmc Simon J. Devitt, William J. Munro, Kae Nemoto 2013 置信度 0.80 Quantum error correctionQuantum computerQuantum informationComputer scienceQuantum
• Quantum error correction below the surface code threshold.
  Quantum error correction 1-4 provides a path to reach practical quantum computing by combining multiple physical qubits into a logical qubit, in which the logical error rate is suppressed exponentially as more qubits are added. However, this exponential suppre…
  pubmed Google Quantum AI and Collaborators, Rajeev Acharya, Dmitry A. Abanin, Laleh Aghababaie-Beni 等 2024-12-09 置信度 0.82 Code (set theory)Surface (topology)Computer scienceMathematicsProgramming language
• Quantum Error Correction in Scrambling Dynamics and Measurement-Induced Phase Transition.
  We analyze the dynamics of entanglement entropy in a generic quantum many-body open system from the perspective of quantum information and error corrections. We introduce a random unitary circuit model with intermittent projective measurements, in which the de…
  europepmc Soonwon Choi, Yimu Bao, Xiao-Liang Qi, Ehud Altman 2020 置信度 0.80 ScramblingQuantum entanglementAmplitude damping channelStatistical physicsQuantum discord
• Real-time quantum error correction beyond break-even.
  europepmc Volodymyr Sivak, Alec Eickbusch, Baptiste Royer, Shraddha Singh 等 2023 置信度 0.80 Quantum error correctionCoherence (philosophical gambling strategy)Computer scienceQuantumQuantum decoherence
• Quantum error correction for metrology.
  We propose and analyze a new approach based on quantum error correction (QEC) to improve quantum metrology in the presence of noise. We identify the conditions under which QEC allows one to improve the signal-to-noise ratio in quantum-limited measurements, and…
  europepmc E. M. Kessler, Igor Lovchinsky, Alexander O. Sushkov, Mikhail D. Lukin 2014 置信度 0.80 Quantum metrologyMetrologyDiamondQuantumSensitivity (control systems)
• Achieving the Heisenberg limit in quantum metrology using quantum error correction.
  Quantum metrology has many important applications in science and technology, ranging from frequency spectroscopy to gravitational wave detection. Quantum mechanics imposes a fundamental limit on measurement precision, called the Heisenberg limit, which can be …
  europepmc Sisi Zhou, Mengzhen Zhang, John Preskill, Liang Jiang 2018 置信度 0.80 Quantum metrologyQuantum error correctionHeisenberg limitPhysicsQuantum limit
• Repeated quantum error correction on a continuously encoded qubit by real-time feedback.
  Reliable quantum information processing in the face of errors is a major fundamental and technological challenge. Quantum error correction protects quantum states by encoding a logical quantum bit (qubit) in multiple physical qubits. To be compatible with univ…
  europepmc Julia Cramer, Norbert Kalb, M. A. Rol, Bas Hensen 等 2016 置信度 0.80 Quantum error correctionQubitComputer scienceQuantum computerQuantum information
• Quantum Error Correction with Only Two Extra Qubits.
  Noise rates in quantum computing experiments have dropped dramatically, but reliable qubits remain precious. Fault-tolerance schemes with minimal qubit overhead are therefore essential. We introduce fault-tolerant error-correction procedures that use only two …
  europepmc Rui Chao, Ben W. Reichardt 2018 置信度 0.80 QubitComputer scienceQuantum computerError detection and correctionHamming code
• Quantum error correction with silicon spin qubits.
  Abstract Future large-scale quantum computers will rely on quantum error correction (QEC) to protect the fragile quantum information during computation1,2. Among the possible candidate platforms for realizing quantum computing devices, the compatibility with m…
  europepmc Kenta Takeda, Akito Noiri, Takashi Nakajima, Takashi Kobayashi 等 2022 置信度 0.80 QubitQuantum computerComputer scienceQuantum error correctionError detection and correction
• Quantum Metrology Enhanced by Repetitive Quantum Error Correction.
  We experimentally demonstrate the protection of a room-temperature hybrid spin register against environmental decoherence by performing repeated quantum error correction whilst maintaining sensitivity to signal fields. We use a long-lived nuclear spin to corre…
  europepmc Thomas Unden, Priya Balasubramanian, Daniel Louzon, Yuval Vinkler 等 2016 置信度 0.80 Quantum decoherenceQuantum sensorQuantum error correctionPhysicsQuantum metrology
• Dissipative quantum error correction and application to quantum sensing with trapped ions.
  Quantum-enhanced measurements hold the promise to improve high-precision sensing ranging from the definition of time standards to the determination of fundamental constants of nature. However, quantum sensors lose their sensitivity in the presence of noise. To…
  europepmc Florentin Reiter, Anders S. Sørensen, P. Zoller, Christine A. Muschik 2017 置信度 0.80 Quantum error correctionQubitQuantumDissipative systemQuantum sensor
• Protecting a bosonic qubit with autonomous quantum error correction.
  europepmc Jeffrey M. Gertler, Brian Baker, Juliang Li, Shruti Shirol 等 2021 置信度 0.80 Quantum error correctionQuantum computerCoherence (philosophical gambling strategy)QubitDissipation
• Analog Quantum Error Correction with Encoding a Qubit into an Oscillator.
  To implement fault-tolerant quantum computation with continuous variables, Gottesman-Kitaev-Preskill (GKP) qubits have been recognized as an important technological element. However, the analog outcome of GKP qubits, which includes beneficial information to im…
  europepmc Kosuke Fukui, Akihisa Tomita, Atsushi Okamoto 2017 置信度 0.80 QubitComputer scienceQuantum error correctionQuantum computerError detection and correction
• Removing leakage-induced correlated errors in superconducting quantum error correction.
  Quantum computing can become scalable through error correction, but logical error rates only decrease with system size when physical errors are sufficiently uncorrelated. During computation, unused high energy levels of the qubits can become excited, creating …
  europepmc M. McEwen, D. Kafri, Z. Chen, J. Atalaya 等 2021 置信度 0.80 TransmonQubitQuantum error correctionError detection and correctionScalability
• Tensor networks and quantum error correction.
  We establish several relations between quantum error correction (QEC) and tensor network (TN) methods of quantum many-body physics. We exhibit correspondences between well-known families of QEC codes and TNs, and demonstrate a formal equivalence between decodi…
  europepmc Andrew J. Ferris, David Poulin 2014 置信度 0.80 Decoding methodsQuantum error correctionQuantumError detection and correctionEquivalence (formal languages)
• Experimental demonstration of continuous quantum error correction.
  The storage and processing of quantum information are susceptible to external noise, resulting in computational errors. A powerful method to suppress these effects is quantum error correction. Typically, quantum error correction is executed in discrete rounds,…
  europepmc William P. Livingston, Machiel Blok, Emmanuel Flurin, Justin Dressel 等 2022 置信度 0.80 Quantum error correctionError detection and correctionQubitComputer scienceQuantum computer
• Quantum Error Correction Decoheres Noise.
  Typical studies of quantum error correction assume probabilistic Pauli noise, largely because it is relatively easy to analyze and simulate. Consequently, the effective logical noise due to physically realistic coherent errors is relatively unknown. Here, we p…
  europepmc Stefanie J. Beale, Joel J. Wallman, Mauricio Gutiérrez, Kenneth R. Brown 等 2018 置信度 0.80 FidelityQuantum error correctionPauli exclusion principleProbabilistic logicNoise (video)
• Iterative quantum coding systems
  crossref David Poulin 2013-09-05T05:03:20Z 置信度 0.70