Quantum block coherence with respect to projective measurements

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外文摘要：Quantum coherence serves as a defining characteristic of quantum mechanics,finding extensive applications in quan-tum computing and quantum communication processing.This study explores quantum block coherence in the context of projective measurements,focusing on the quantification of such coherence.Firstly,we define the correlation function between the two general projective measurements P and Q,and analyze the connection between sets of block incoherent states related to two compatible projective measurements P and Q.Secondly,we discuss the measure of quantum block co-herence with respect to projective measurements.Based on a given measure of quantum block coherence,we characterize the existence of maximal block coherent states through projective measurements.This research integrates the compatibility of projective measurements with the framework of quantum block coherence,contributing to the advancement of block coherence measurement theory.

外文关键词：

quantum coherencecompatibilityprojective measurementquantum block coherence

作者：

王璞、李忠艳、孟会贤

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作者单位：

School of Control and Computer Engineering,North China Electric Power University,Beijing 102206,China

School of Mathematics and Physics,North China Electric Power University,Beijing 102206,China

基金：

National Natural Science Foundations of ChinaChina Postdoctoral Science FoundationFundamental Research Funds for the Central UniversitiesBeijing Natural Science Foundation

项目编号：

119013172020M6804802023MS0781232021

出版年：

2024

DOI：

10.1088/1674-1056/ad50c1

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(8)