Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,881
This Month
1,306
Today
0
Research Volume
13,138 papers in 12 months (+1% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A quantum circuit simulator and its applications on Sunway TaihuLight supercomputer
Zhimin Wang, Zhao-Yun Chen, Shengbin Wang +4 more·Aug 17, 2020
Classical simulation of quantum computation is vital for verifying quantum devices and assessing quantum algorithms. We present a new quantum circuit simulator developed on the Sunway TaihuLight supercomputer. Compared with other simulators, the pres...
Robustness Verification of Quantum Classifiers
J. Guan, Wang Fang, M. Ying·Aug 17, 2020
Several important models of machine learning algorithms have been successfully generalized to the quantum world, with potential speedup to training classical classifiers and applications to data analytics in quantum physics that can be implemented on...
Ab initio molecular dynamics on quantum computers.
D. Fedorov, M. Otten, S. Gray +1 more·Aug 14, 2020
Ab initio molecular dynamics (AIMD) is a valuable technique for studying molecules and materials at finite temperatures where the nuclei evolve on potential energy surfaces obtained from accurate electronic structure calculations. In this work, we pr...
Statistical Aspects of the Quantum Supremacy Demonstration
Y. Rinott, Tomer Shoham, G. Kalai·Aug 12, 2020
The notable claim of quantum supremacy presented by Google's team in 2019 consists of demonstrating the ability of a quantum circuit to generate, albeit with considerable noise, bitstrings from a distribution that is considered hard to simulate on cl...
Improving Hamiltonian encodings with the Gray code
Olivia Di Matteo, A. McCoy, P. Gysbers +3 more·Aug 11, 2020
Due to the limitations of present-day quantum hardware, it is especially critical to design algorithms that make the best possible use of available resources. When simulating quantum many-body systems on a quantum computer, many of the encodings that...
Quantum Power Method by a Superposition of Time-Evolved States
K. Seki, S. Yunoki·Aug 9, 2020
We propose a quantum-classical hybrid algorithm of the power method, here dubbed as quantum power method, to evaluate $\hat{\mathcal{H}}^{n}|\psi\rangle$ with quantum computers, where $n$ is a nonnegative integer, $\hat{\mathcal{H}}$ is a time-indepe...
Efficient and Low-Backaction Quantum Measurement Using a Chip-Scale Detector.
Eric I. Rosenthal, C. Schneider, M. Malnou +13 more·Aug 9, 2020
Superconducting qubits are a leading platform for scalable quantum computing and quantum error correction. One feature of this platform is the ability to perform projective measurements orders of magnitude more quickly than qubit decoherence times. S...
Short Codes for Quantum Channels With One Prevalent Pauli Error Type
M. Chiani, L. Valentini·Aug 1, 2020
One of the main problems in quantum information systems is the presence of errors due to noise, and for this reason quantum error-correcting codes (QECCs) play a key role. While most of the known codes are designed for correcting generic errors, i.e....
Noise Reduction in Qubit Readout with a Two-Mode Squeezed Interferometer
G. Liu, X. Cao, T. Chien +3 more·Jul 30, 2020
Fault-tolerant quantum information processing with flawed qubits and gates requires highly efficient, quantum non-demolition (QND) qubit readout. In superconducting circuits, qubit readout using coherent light with fidelity above 99% has been achieve...
Geometrical Formalism for Dynamically Corrected Gates in Multiqubit Systems
Donovan Buterakos, Sankar Das Sarma, Edwin Barnes·Jul 30, 2020
The ability to perform gates in multiqubit systems that are robust to noise is of crucial importance for the advancement of quantum information technologies. However, finding control pulses that cancel noise while performing a gate is made difficult ...
Noise-induced barren plateaus in variational quantum algorithms
Samson Wang, Enrico Fontana, M. Cerezo +4 more·Jul 28, 2020
Variational Quantum Algorithms (VQAs) may be a path to quantum advantage on Noisy Intermediate-Scale Quantum (NISQ) computers. A natural question is whether noise on NISQ devices places fundamental limitations on VQA performance. We rigorously prove ...
Quantum Embedded Superstates
N. Nefedkin, A. Alú, A. Krasnok·Jul 27, 2020
Optical supercavity modes (superstates), i.e., hybrid modes emerging from the strong coupling of two modes of an open cavity, can support ultranarrow lines in their scattering spectra associated with quasi bound states in the continuum (quasi‐BIC). T...
Supervised Learning Using a Dressed Quantum Network with "Super Compressed Encoding": Algorithm and Quantum-Hardware-Based Implementation
Saurabh Kumar, Siddharth Dangwal, D. Bhowmik·Jul 20, 2020
Implementation of variational Quantum Machine Learning (QML) algorithms on Noisy Intermediate-Scale Quantum (NISQ) devices is known to have issues related to the high number of qubits needed and the noise associated with multi-qubit gates. In this pa...
Fault-tolerant measurement-free quantum error correction with multiqubit gates
M. Perlin, Vickram N. Premakumar, Jiakai Wang +2 more·Jul 19, 2020
Measurement-free quantum error correction (MFQEC) offers an alternative to standard measurement-based QEC in platforms with an unconditional qubit reset gate. We revisit the question of fault tolerance (FT) for a measurement-free variant of the Stean...
High-fidelity two-qubit gates in silicon above one Kelvin.
L. Petit, M. Russ, H. Eenink +4 more·Jul 17, 2020
Spin qubits in quantum dots define an attractive platform for scalable quantum information because of their compatibility with semiconductor manufacturing, their long coherence times, and the ability to operate at temperatures exceeding one Kelvin. Q...
Experimental implementation of non-Clifford interleaved randomized benchmarking with a controlled- S gate
Shelly Garion, Naoki Kanazawa, H. Landa +4 more·Jul 16, 2020
Hardware efficient transpilation of quantum circuits to a quantum devices native gateset is essential for the execution of quantum algorithms on noisy quantum computers. Typical quantum devices utilize a gateset with a single two-qubit Clifford entan...
A non-algorithmic approach to “programming” quantum computers via machine learning
Nathan L. Thompson, J. Steck, E. Behrman·Jul 16, 2020
Major obstacles remain to the implementation of macroscopic quantum computing: hardware problems of noise, decoherence, and scaling; software problems of error correction; and, most important, algorithm construction. Finding truly quantum algorithms ...
Fast Estimation of Sparse Quantum Noise
R. Harper, Wenjun Yu, S. Flammia·Jul 15, 2020
As quantum computers approach the fault tolerance threshold, diagnosing and characterizing the noise on large scale quantum devices is increasingly important. One of the most important classes of noise channels is the class of Pauli channels, for rea...
Quantum error-correcting codes and their geometries
Simeon Ball, Aina Centelles, Felix Huber·Jul 12, 2020
This is an expository article aiming to introduce the reader to the underlying mathematics and geometry of quantum error correction. Information stored on quantum particles is subject to noise and interference from the environment. Quantum error-corr...
Adiabatic quantum state transfer in a semiconductor quantum-dot spin chain
Y. Kandel, Haifeng Qiao, S. Fallahi +3 more·Jul 8, 2020
Semiconductor quantum-dot spin qubits are a promising platform for quantum computation, because they are scalable and possess long coherence times. In order to realize this full potential, however, high-fidelity information transfer mechanisms are re...