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论文类型：期刊论文

发表时间：2019-02-01

发表刊物：PHYSICA SCRIPTA

收录刊物：SCIE

卷号：94

期号：2

ISSN号：0031-8949

关键字：quantum coherence; information entropy; complementarity relation

摘要：We investigate the complementarity relations of the measurement-induced average total coherence (MIATC) in tripartite quantum system rho(ABC). If the subsystem is measured by the projective measurement, the other subsystems collapse to a corresponding state with some probabilities and hence gain the average quantum coherence subject to the total quantum coherence measure. In this paper, we will give the complementarity relations in two cases. In the first case, the projective measurement is performed on the subsystem A, we will study the average total quantum coherence of the other subsystems B, C and BC. In the second case, the projective measurements and joint projective measurement are performed on the subsystems B, C and BC, respectively. Correspondingly, we will focus on the measurement-induced average total quantum coherence of the subsystem A. Based on the notions of the interaction information and the increment of mutual information, we find that there exist the different complementarity relations, which reveal the role of the correlation between different subsystems on the MIATC and how the MIATCs of the subsystems are distributed among different measurement schemes.