Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
31,522
This Month
0
Today
0
Research Volume
15,603 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
Quantum Bayesian Neural Networks
N J Berner, Vincent Fortuin, Jonas Landman·Jul 20, 2021
Quantum machine learning promises great speedups over classical algorithms, but it often requires repeated computations to achieve a desired level of accuracy for its point estimates. Bayesian learning focuses more on sampling from posterior distribu...
A quantum algorithm for training wide and deep classical neural networks
Alexander Zlokapa, H. Neven, S. Lloyd·Jul 19, 2021
Given the success of deep learning in classical machine learning, quantum algorithms for traditional neural network architectures may provide one of the most promising settings for quantum machine learning. Considering a fully-connected feedforward n...
Prime factorization using quantum variational imaginary time evolution
R. Selvarajan, Vivek Dixit, X. Cui +2 more·Jul 19, 2021
The road to computing on quantum devices has been accelerated by the promises that come from using Shor’s algorithm to reduce the complexity of prime factorization. However, this promise hast not yet been realized due to noisy qubits and lack of robu...
Effect of quantum error correction on detection-induced coherent errors
Qinghong Yang, Dong E. Liu·Jul 19, 2021
We study the performance of quantum error correction codes(QECCs) under the detection-induced coherent error due to the imperfectness of practical implementations of stabilizer measurements, after running a quantum circuit. Considering the most promi...
Variational quantum linear solver with a dynamic ansatz
Hrushikesh Pramod Patil, Yulun Wang, P. Krstic·Jul 19, 2021
Variational quantum algorithms have found success in the NISQ era owing to their hybrid quantum-classical approach which mitigate the problems of noise in quantum computers. In our study we introduce the dynamic ansatz in the Variational Quantum Line...
Quantum Noise Sensing by Generating Fake Noise
Paolo Braccia, L. Banchi, F. Caruso·Jul 19, 2021
Noisy-Intermediate-Scale-Quantum (NISQ) devices are nowadays starting to become available to the final user, hence potentially allowing to show the quantum speedups predicted by the quantum information theory. However, before implementing any quantum...
Nonnormal Hamiltonian dynamics in quantum systems and its realization on quantum computers
N. Okuma, Yuya O. Nakagawa·Jul 18, 2021
The eigenspectrum of a non-normal matrix, which does not commute with its Hermitian conjugate, is a central issue of non-Hermitian physics that has been extensively studied in the past few years. There is, however, another characteristic of a non-nor...
Scqubits: a Python package for superconducting qubits
Peter Groszkowski, J. Koch·Jul 18, 2021
scqubits is an open-source Python package for simulating and analyzing superconducting circuits. It provides convenient routines to obtain energy spectra of common superconducting qubits, such as the transmon, fluxonium, flux, cos(2ϕ) and the 0-π qub...
Best Subset Selection: Statistical Computing Meets Quantum Computing.
Wenxuan Zhong, Y. Ke, Ye Wang +3 more·Jul 18, 2021
With the rapid development of quantum computers, quantum algorithms have been studied extensively. However, quantum algorithms tackling statistical problems are still lacking. In this paper, we propose a novel non-oracular quantum adaptive search (QA...
Module for arbitrary controlled rotation in gate-based quantum algorithms
W. Cui, Shilu Yan·Jul 17, 2021
To assess whether a gate-based quantum algorithm can be executed successfully on a noisy intermediate-scale quantum (NISQ) device, both complexity and actual value of quantum resources should be considered carefully. Based on quantum phase estimation...
Quantum circuits with classical channels and the principle of deferred measurements
Y. Gurevich, A. Blass·Jul 17, 2021
We define syntax and semantics of quantum circuits, allowing measurement gates and classical channels. We define circuit-based quantum algorithms and prove that, semantically, any such algorithm is equivalent to a single measurement that depends only...
Fast suppression of classification error in variational quantum circuits
Bingzhi Zhang, Quntao Zhuang·Jul 16, 2021
Variational quantum circuits (VQCs) have shown great potential in near-term applications. However, the discriminative power of a VQC, in connection to its circuit architecture and depth, is not understood. To unleash the genuine discriminative power ...
3D topological quantum computing
T. Asselmeyer-Maluga·Jul 16, 2021
In this paper, we will present some ideas to use 3D topology for quantum computing extending ideas from a previous paper. Topological quantum computing used “knotted” quantum states of topological phases of matter, called anyons. But anyons are conne...
Fibre polarisation state compensation in entanglement-based quantum key distribution.
Yicheng Shi, Hou Shun Poh, A. Ling +1 more·Jul 16, 2021
Quantum key distribution (QKD) using polarisation encoding can be hard to implement over deployed telecom fibres because the routing geometry and the birefringence of the fibre link can alter the polarisation states of the propagating photons. These ...
Analytic gradients in variational quantum algorithms: Algebraic extensions of the parameter-shift rule to general unitary transformations
A. Izmaylov, Robert A. Lang, Tzu-Ching Yen·Jul 16, 2021
Optimization of unitary transformations in Variational Quantum Algorithms benefits highly from efficient evaluation of cost function gradients with respect to amplitudes of unitary generators. We propose several extensions of the parametric-shift-rul...
Simulating quantum mechanics with a θ -term and an ’t Hooft anomaly on a synthetic dimension
Jiayu Shen, Di Luo, Chenxi Huang +4 more·Jul 16, 2021
A topological $\theta$-term in gauge theories, including quantum chromodynamics in 3+1 dimensions, gives rise to a sign problem that makes classical Monte Carlo simulations impractical. Quantum simulations are not subject to such sign problems and ar...
First-Order Trotter Error from a Second-Order Perspective.
David Layden·Jul 16, 2021
Simulating quantum dynamics beyond the reach of classical computers is one of the main envisioned applications of quantum computers. The most promising quantum algorithms to this end in the near term are the simplest, which use the Trotter formula an...
Convergence Guarantees for Discrete Mode Approximations to Non-Markovian Quantum Baths.
Rahul Trivedi, D. Malz, J. Cirac·Jul 15, 2021
Non-Markovian effects are important in modeling the behavior of open quantum systems arising in solid-state physics, quantum optics as well as in study of biological and chemical systems. The non-Markovian environment is often approximated by discret...
Divide and Conquer for Combinatorial Optimization and Distributed Quantum Computation
T. Tomesh, Zain Saleem, M. Perlin +3 more·Jul 15, 2021
Scaling the size of monolithic quantum computer systems is a difficult task. As the number of qubits within a device increases, a number of factors contribute to decreases in yield and performance. To meet this challenge, distributed architectures co...
Implementing efficient selective quantum process tomography of superconducting quantum gates on IBM quantum experience
Akshay Gaikwad, Krishna Shende, Arvind +1 more·Jul 15, 2021
The experimental implementation of selective quantum process tomography (SQPT) involves computing individual elements of the process matrix with the help of a special set of states called quantum 2-design states. However, the number of experimental s...