Quantum Error Mitigation

作     者：Cai, Zhenyu Babbush, Ryan Benjamin, Simon C. Endo, Suguru Huggins, William J. Li, Ying McClean, Jarrod R. O’Brien, Thomas E. 

作者机构：Department of Materials University of Oxford OxfordOX1 3PH United Kingdom Quantum Motion 9 Sterling Way LondonN7 9HJ United Kingdom Google Quantum AI VeniceCA90291 United States NTT Computer and Data Science Laboratories NTT Corporation Musashino180-8585 Japan Graduate School of China Academy of Engineering Physics Beijing100193 China 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2022年

核心收录：

主　　题：Fault tolerance 

摘      要：For quantum computers to successfully solve real-world problems, it is necessary to tackle the challenge of noise: the errors which occur in elementary physical components due to unwanted or imperfect interactions. The theory of quantum fault tolerance can provide an answer in the long term, but in the coming era of ‘NISQ’ machines we must seek to mitigate errors rather than completely remove them. This review surveys the diverse methods that have been proposed for quantum error mitigation, assesses their in-principle efficacy, and then describes the hardware demonstrations achieved to date. We identify the commonalities and limitations among the methods, noting how mitigation methods can be chosen according to the primary type of noise present, including algorithmic errors. Open problems in the field are identified and we discuss the prospects for realising mitigation-based devices that can deliver quantum advantage with an impact on science and business. Copyright © 2022, The Authors. All rights reserved.