Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,591 papers in 12 months (-18% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Machine Learning of Noise-Resilient Quantum Circuits
L. Cincio, K. Rudinger, M. Sarovar +1 more·Jul 2, 2020
Noise mitigation and reduction will be crucial for obtaining useful answers from near-term quantum computers. In this work, we present a general framework based on machine learning for reducing the impact of quantum hardware noise on quantum circuits...
Implementing a Fast Unbounded Quantum Fanout Gate Using Power-Law Interactions
Andrew Y. Guo, A. Deshpande, Su-Kuan Chu +6 more·Jul 1, 2020
The standard circuit model for quantum computation presumes the ability to directly perform gates between arbitrary pairs of qubits, which is unlikely to be practical for large-scale experiments. Power-law interactions with strength decaying as $1/r^...
Measurement-device-independent QSDC protocol using Bell and GHZ states on quantum simulator
Aruna Gupta, B. K. Behera, P. Panigrahi·Jul 1, 2020
Secure cryptographic protocols are indispensable for modern communication systems. It is realized through an encryption process in cryptography. In quantum cryptography, Quantum Key Distribution (QKD) is a widely popular quantum communication scheme ...
Just Like the Real Thing: Fast Weak Simulation of Quantum Computation
S. Hillmich, I. Markov, R. Wille·Jul 1, 2020
Quantum computers promise significant speedups in solving problems intractable for conventional computers but, despite recent progress, remain limited in scaling and availability. Therefore, quantum software and hardware development heavily rely on s...
Quantum algorithm for Petz recovery channels and pretty good measurements
Andr'as Gily'en, S. Lloyd, I. Marvian +2 more·Jun 30, 2020
The Petz recovery channel plays an important role in quantum information science as an operation that approximately reverses the effect of a quantum channel. The pretty good measurement is a special case of the Petz recovery channel, and it allows fo...
Improved Quantum State Tomography for Superconducting Quantum Computing Systems
T. Xin·Jun 29, 2020
Quantum device characterization via state tomography plays an important role in both validating quantum hardware and processing quantum information, unfortunately with the exponential number of the measurements. As one of the main stream quantum plat...
Amplitude estimation via maximum likelihood on noisy quantum computer
Tomoki Tanaka, Yohichi Suzuki, Shumpei Uno +3 more·Jun 29, 2020
Recently we find several candidates of quantum algorithms that may be implementable in near-term devices for estimating the amplitude of a given quantum state, which is a core subroutine in various computing tasks such as the Monte Carlo methods. One...
Bell inequality violation on small NISQ computers
H. Naus, H. Technology, Netherlands Institute for Space Research +2 more·Jun 24, 2020
Quantum computational experiments exploiting Noisy Intermediate-Scale Quantum (NISQ) devices to demonstrate violation of a Bell inequality are proposed. They consist of running specified quantum algorithms on few-qubit computers. If such a device ass...
Quantum Information Processing: An Essential Primer
E. Soljanin·Jun 24, 2020
Quantum information science is an exciting, wide, rapidly progressing, cross-disciplinary field, and that very nature makes it both attractive and hard to enter. In this primer, we first provide answers to the three essential questions that any newco...
Deep learning enhanced individual nuclear-spin detection
Kyunghoon Jung, M. Abobeih, Jiwon Yun +5 more·Jun 24, 2020
The detection of nuclear spins using individual electron spins has enabled diverse opportunities in quantum sensing and quantum information processing. Proof-of-principle experiments have demonstrated atomic-scale imaging of nuclear-spin samples and ...
Optimising repeater schemes for the quantum internet
K. Goodenough, David Elkouss, S. Wehner·Jun 22, 2020
The rate at which quantum communication tasks can be performed using direct transmission is fundamentally hindered by the channel loss. Quantum repeaters allow, in principle, to overcome these limitations, but their introduction necessarily adds an a...
Minimal informationally complete measurements for probability representation of quantum dynamics
V. Yashin, E. Kiktenko, A. Mastiukova +1 more·Jun 22, 2020
In the present work, we suggest an approach for describing dynamics of finite-dimensional quantum systems in terms of pseudostochastic maps acting on probability distributions, which are obtained via minimal informationally complete quantum measureme...
High-Fidelity, High-Scalability Two-Qubit Gate Scheme for Superconducting Qubits.
Yuan Xu, Ji Chu, Jiahao Yuan +9 more·Jun 21, 2020
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 highl...
On Sampling and Inference using Quantum Algorithms
S. Ashutosh, D. Sarmah, Sayantani Pramanik +1 more·Jun 21, 2020
Quantum computers are projected to handle the Gibbs sampling and the related inference on Markov networks effectively. Apart from noting the background information useful for those starting the explorations in this important thread of Quantum Machine...
Continuous Variable Single Mode Quantum Decoder for Image Reconstruction and Denoising
J. Basani, A. Bhattacherjee·Jun 19, 2020
Quantum computation using optical modes has been well-established in its ability to construct deep neural networks. We introduce a model that is the quantum analogue of the classical autoencoder - a neural network model that can reconstruct its input...
Floquet-enhanced spin swaps
Haifeng Qiao, Y. Kandel, J. Dyke +5 more·Jun 19, 2020
The transfer of information between quantum systems is essential for quantum communication and computation. In quantum computers, high connectivity between qubits can improve the efficiency of algorithms, assist in error correction, and enable high-f...
Quantum geometric machine learning for quantum circuits and control
Elija Perrier, D. Tao, C. Ferrie·Jun 19, 2020
The application of machine learning techniques to solve problems in quantum control together with established geometric methods for solving optimisation problems leads naturally to an exploration of how machine learning approaches can be used to enha...
Entanglement transition in the projective transverse field Ising model
Nicolai Lang, H. Büchler·Jun 17, 2020
Discrete quantum trajectories of systems under random unitary gates and projective measurements have been shown to feature transitions in the entanglement scaling that are not encoded in the density matrix. In this paper, we study the projective tran...
Resource-Efficient Quantum Computing by Breaking Abstractions
Yunong Shi, P. Gokhale, Prakash Murali +11 more·Jun 15, 2020
Building a quantum computer that surpasses the computational power of its classical counterpart is a great engineering challenge. Quantum software optimizations can provide an accelerated pathway to the first generation of quantum computing (QC) appl...
Voltage-Tunable Superconducting Resonators: A Platform for Random Access Quantum Memory
K. Sardashti, M. Dartiailh, Joseph O. Yuan +3 more·Jun 15, 2020
In computing architectures, one important factor is the tradeoff between the need to couple bits of information (quantum or classical) to each other and to an external drive and the need to isolate them well enough in order to protect the information...