Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,639 papers in 12 months (-16% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Neural Error Mitigation of Near-Term Quantum Simulations
Elizabeth R. Bennewitz, Florian Hopfmueller, B. Kulchytskyy +2 more·May 17, 2021
Near-term quantum computers provide a promising platform for finding the ground states of quantum systems, which is an essential task in physics, chemistry and materials science. However, near-term approaches are constrained by the effects of noise, ...
Optimizing the walk coin in the quantum random walk search algorithm
Hristo Tonchev, Petar Danev·May 17, 2021
This paper examines the stability of the quantum random walk search algorithm, when the walk coin is constructed by generalized Householder reflection and additional phase shift, against inaccuracies in the phases used to construct the coin. The opti...
QuaSiMo: A composable library to program hybrid workflows for quantum simulation
Thien Nguyen, Lindsay Bassman, Phillip C. Lotshaw +7 more·May 17, 2021
We present a composable design scheme for the development of hybrid quantum/classical algorithms and workflows for applications of quantum simulation. Our object-oriented approach is based on constructing an expressive set of common data structures a...
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...
Software-Hardware Co-Optimization for Computational Chemistry on Superconducting Quantum Processors
Gushu Li, Yunong Shi, Ali Javadi-Abhari·May 15, 2021
Computational chemistry is the leading application to demonstrate the advantage of quantum computing in the near term. However, large-scale simulation of chemical systems on quantum computers is currently hindered due to a mismatch between the comput...
Quantum computation of nonlinear maps
I. Dodin, E. Startsev·May 15, 2021
Quantum algorithms for computing classical nonlinear maps are widely known for toy problems but might not suit potential applications to realistic physics simulations. Here, we propose how to compute a general differentiable invertible nonlinear map ...
On Quantum Optimal Transport
Sam Cole, Michał Eckstein, S. Friedland +1 more·May 14, 2021
We analyze a quantum version of the Monge–Kantorovich optimal transport problem. The quantum transport cost related to a Hermitian cost matrix C is minimized over the set of all bipartite coupling states ρAB\documentclass[12pt]{minimal} \usepackage{a...
Hybrid Schrödinger-Feynman Simulation of Quantum Circuits With Decision Diagrams
Lukas Burgholzer, Hartwig Bauer, R. Wille·May 14, 2021
Classical simulations of quantum computations are vital for the future development of this emerging technology. To this end, decision diagrams have been proposed as a complementary technique which frequently allows to tackle the inherent exponential ...
Numerical hardware-efficient variational quantum simulation of a soliton solution
A. Kardashin, A. Pervishko, J. Biamonte +1 more·May 13, 2021
Implementing variational quantum algorithms with noisy intermediate-scale quantum machines of up to a hundred qubits is nowadays considered as one of the most promising routes towards achieving a quantum practical advantage. In multiqubit circuits, r...
Quantum Simulations of the Non-Unitary Time Evolution and Applications to Neutral-Kaon Oscillations
Ying Chen, Yunheng Ma, Shun Zhou·May 11, 2021
In light of recent exciting progress in building up quantum computing facilities based on both optical and cold-atom techniques, the algorithms for quantum simulations of particle-physics systems are in rapid progress. In this paper, we propose an ef...
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, ...
Phase-space simulations of feedback coherent Ising machines.
S. Kiesewetter, P. Drummond·May 10, 2021
A new, to the best of our knowledge, technique is demonstrated for carrying out exact positive-P phase-space simulations of the coherent Ising machine quantum computer. By suitable design of the coupling matrix, general hard optimization problems can...
Quantum Machine Learning For Classical Data
Leonard Wossnig·May 8, 2021
In this dissertation, we study the intersection of quantum computing and supervised machine learning algorithms, which means that we investigate quantum algorithms for supervised machine learning that operate on classical data. This area of research ...
Optimizing the Phase Estimation Algorithm Applied to the Quantum Simulation of Heisenberg-Type Hamiltonians
Scott Johnstun, J. F. Huele·May 7, 2021
The phase estimation algorithm is a powerful quantum algorithm with applications in cryptography, number theory, and simulation of quantum systems. We use this algorithm to simulate the time evolution of a system of two spin-1/2 particles under a Hei...
Grand Unification of Quantum Algorithms
J. Martyn, Z. M. Rossi, Andrew K. Tan +1 more·May 6, 2021
Quantum algorithms offer significant speedups over their classical counterparts for a variety of problems. The strongest arguments for this advantage are borne by algorithms for quantum search, quantum phase estimation, and Hamiltonian simulation, wh...
Parametrized Hamiltonian simulation using quantum optimal control
Paul Kairys, T. Humble·May 5, 2021
Analog quantum simulation offers a hardware-specific approach to studying quantum dynamics, but mapping a model Hamiltonian onto the available device parameters requires matching the hardware dynamics. We introduce a paradigm for quantum Hamiltonian ...
Variational quantum eigensolver for dynamic correlation functions
Hongxiang Chen, Max Nusspickel, J. Tilly +1 more·May 4, 2021
Recent practical approaches for the use of current generation noisy quantum devices in the simulation of quantum many-body problems have been dominated by the use of a variational quantum eigensolver (VQE). These coupled quantum-classical algorithms ...
Leveraging State Sparsity for More Efficient Quantum Simulations
Samuel Jaques, Thomas Häner·May 4, 2021
High-performance techniques to simulate quantum programs on classical hardware rely on exponentially large vectors to represent quantum states. When simulating quantum algorithms, the quantum states that occur are often sparse due to special structur...
A Backend-agnostic, Quantum-classical Framework for Simulations of Chemistry in C++
Daniel Claudino, A. McCaskey, Dmitry I. Lyakh·May 4, 2021
As quantum computing hardware systems continue to advance, the research and development of performant, scalable, and extensible software architectures, languages, models, and compilers is equally as important to bring this novel coprocessing capabili...
Hot-Start Optimization for Variational Quantum Eigensolver
Belozerova Polina, S. Arthur, Zotov Yuriy +2 more·Apr 30, 2021
The Variational Quantum Eigensolver (VQE) is one the most perspective algorithms for simulation of quantum many body physics that have recently attached a lot of attention and believed would be practical for implementation on the near term quantum de...