Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,509 papers in 12 months (-19% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Pulse-level noisy quantum circuits with QuTiP
Boxi Li, Shahnawaz Ahmed, Sidhant Saraogi +4 more·May 20, 2021
The study of the impact of noise on quantum circuits is especially relevant to guide the progress of Noisy Intermediate-Scale Quantum (NISQ) computing. In this paper, we address the pulse-level simulation of noisy quantum circuits with the Quantum To...
Hamiltonian Model for Fault Tolerant Singlet-Like Excitation: First Principles Approach
Donghyun Jin, Grihith Manchanda, D. Davidovic·May 20, 2021
Deriving quantum error correction and quantum control from the Schrodinger equation for a unified qubit-environment Hamiltonian will give insights into how microscopic degrees of freedom affect the capability to control and correct quantum informatio...
Frequency measurements beyond the Heisenberg time-energy limit with a single atom
L. McGuinness·May 18, 2021
The Heisenberg time-energy relation prevents determination of an atomic transition to better than the inverse of the measurement time. The relation generally applies to frequency estimation of a near-resonant field [1-3], since information on the fie...
Generating time-domain linear cluster state by recycling superconducting qubits
S. Shirai, Yu Zhou, Keiichi Sakata +2 more·May 18, 2021
Cluster states, a type of highly entangled state, are essential resources for quantum information processing. Here we demonstrated the generation of a time-domain linear cluster state (t-LCS) using a superconducting quantum circuit consisting of only...
Quantum error reduction with deep neural network applied at the post-processing stage
A. Zhukov, W. Pogosov·May 17, 2021
Deep neural networks (DNN) can be applied at the post-processing stage for the improvement of the results of quantum computations on noisy intermediate-scale quantum (NISQ) processors. Here, we propose a method based on this idea, which is most suita...
Testing complementarity on a transmon quantum processor
P. M. Q. Cruz, J. Fern'andez-Rossier·May 17, 2021
We propose quantum circuits to test interferometric complementarity using symmetric two-way interferometers coupled to a which-path detector. First, we consider the two-qubit setup in which the controlled transfer of path information to the detector ...
Charge qubits in the USC regime for quantum state transfer
F. C'ardenas-L'opez, J. Yu, C. K. Andersen +2 more·May 14, 2021
We study the feasibility of reaching the ultrastrong (USC) and deep-strong coupling (DSC) regimes of light-matter interaction, in particular at resonance condition, with a superconducting charge qubit, also known as Cooper-Pair box (CPB). We numerica...
Multiplexed quantum repeaters based on dual-species trapped-ion systems
Prajit Dhara, N. Linke, E. Waks +2 more·May 14, 2021
Trapped ions form an advanced technology platform for quantum information processing with long qubit coherence times, high-fidelity quantum logic gates, optically active qubits, and a potential to scale up in size while preserving a high level of con...
Anti-Hong-Ou-Mandel interference by coherent perfect absorption of entangled photons
Anton N. Vetlugin, Ruixiang Guo, Cesare Soci +1 more·May 12, 2021
Two-photon interference, known as the Hong-Ou-Mandel effect, has colossal implications for quantum technology. It was observed in 1987 with two photodetectors monitoring outputs of the beamsplitter illuminated by photon pairs: the coincidence rate of...
Maxwell Demon and Einstein–Podolsky–Rosen Steering
M. Hu 胡, X. Hu 胡, Y. Zhang 张·May 12, 2021
Research of Maxwell demon and quantum entanglement is important because of its foundational significance in physics and its potential applications in quantum information. Previous studies on the Maxwell demon have primarily focused on thermodynamics,...
Coherent manipulation of graph states composed of finite-energy Gottesman-Kitaev-Preskill-encoded qubits
K. Seshadreesan, Prajit Dhara, A. Patil +2 more·May 10, 2021
Graph states are a central resource in measurement-based quantum information processing. In the photonic qubit architecture based on Gottesman-Kitaev-Preskill (GKP) encoding, the generation of high-fidelity graph states composed of realistic, finite-en...
Sampling-based quasiprobability simulation for fault-tolerant quantum error correction on the surface codes under coherent noise
Shigeo Hakkaku, K. Mitarai, K. Fujii·May 10, 2021
Shigeo Hakkaku, ∗ Kosuke Mitarai, 2, 3, † and Keisuke Fujii 2, 4, 5, ‡ Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan Center for Quantum Information and Quantum Biology, Osaka University, ...
Fidelity bounds for device-independent advantage distillation
Thomas Hahn, E. Y. Tan·May 7, 2021
It is known that advantage distillation (that is, information reconciliation using two-way communication) improves noise tolerances for quantum key distribution (QKD) setups. Two-way communication is hence also of interest in the device-independent c...
Assessing the Nature of Chiral-Induced Spin Selectivity by Magnetic Resonance
A. Chiesa, M. Chizzini, E. Garlatti +8 more·May 5, 2021
Understanding chiral-induced spin selectivity (CISS), resulting from charge transport through helical systems, has recently inspired many experimental and theoretical efforts but is still the object of intense debate. In order to assess the nature of...
Error Mitigation in Quantum Computers through Instruction Scheduling
Kaitlin N. Smith, Gokul Subramanian Ravi, Prakash Murali +4 more·May 4, 2021
Quantum systems have potential to demonstrate significant computational advantage, but current quantum devices suffer from the rapid accumulation of error that prevents the storage of quantum information over extended periods. The unintentional coupl...
Automatically Differentiable Quantum Circuit for Many-qubit State Preparation
Peng Zhou, Rui Hong, Shi-Ju Ran·Apr 30, 2021
Constructing quantum circuits for efficient state preparation belongs to the central topics in the field of quantum information and computation. As the number of qubits grows fast, methods to derive large-scale quantum circuits are strongly desired. ...
Exploiting degeneracy in belief propagation decoding of quantum codes
Kao-Yueh Kuo, C. Lai·Apr 28, 2021
Quantum information needs to be protected by quantum error-correcting codes due to imperfect physical devices and operations. One would like to have an efficient and high-performance decoding procedure for the class of quantum stabilizer codes. A pot...
Classical and Quantum algorithms for generic Syndrome Decoding problems and applications to the Lee metric
A. Chailloux, Thomas Debris-Alazard, Simona Etinski·Apr 26, 2021
The security of code-based cryptography usually relies on the hardness of the syndrome decoding (SD) problem for the Hamming weight. The best generic algorithms are all improvements of an old algorithm by Prange, and they are known under the name of ...
Quantum Causal Inference in the Presence of Hidden Common Causes: an Entropic Approach
Mohammad Ali Javidian, V. Aggarwal, Z. Jacob·Apr 24, 2021
Quantum causality is an emerging field of study which has the potential to greatly advance our understanding of quantum systems. In this paper, we put forth a theoretical framework for merging quantum information science and causal inference by exploi...
Single-Photon Emission from Individual Nanophotonic-Integrated Colloidal Quantum Dots
A. Eich, T. C. Spiekermann, H. Gehring +8 more·Apr 23, 2021
Solution processible colloidal quantum dots hold great promise for realizing single-photon sources embedded into scalable quantum technology platforms. However, the high-yield integration of large numbers of individually addressable colloidal quantum...