Self-consistent tomography of temporally correlated errors  

作　　者：Mingxia Huo Ying Li 

机构地区：[1]Beijing Computational Science Research Center,Beijing 100193,China [2]Department of Physics and Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science,School of Mathematics and Physics,University of Science and Technology Beijing,Beijing 100083,China [3]Graduate School of China Academy of Engineering Physics,Beijing 100193,China

出　　处：《Communications in Theoretical Physics》2021年第7期59-74,共16页理论物理通讯（英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2016YFA0301200);the National Basic Research Program of China(Grant No.2014CB921403);supported by Science Challenge Project(Grant No.TZ2017003);the National Natural Science Foundation of China(Grants No.11774024,No.11534002,and No.U1530401);supported by National Natural Science Foundation of China(Grant No.11875050,12088101);NSAF(Grant No.U1930403)。

摘　　要：The error model of a quantum computer is essential for optimizing quantum algorithms to minimize the impact of errors using quantum error correction or error mitigation.Noise with temporal correlations,e.g.low-frequency noise and context-dependent noise,is common in quantum computation devices and sometimes even significant.However,conventional tomography methods have not been developed for obtaining an error model describing temporal correlations.In this paper,we propose self-consistent tomography protocols to obtain a model of temporally correlated errors,and we demonstrate that our protocols are efficient for low-frequency noise and context-dependent noise.

关 键 词：self-consistent tomography temporally correlated errors quantum computer 

分 类 号：O413[理学—理论物理] TP38[理学—物理]