Coherence of Superposition States

被引：0

作者：

宇文珊珊 ^{[1
]}

邵连合 ^{[2
]}

席政军 ^{[1
]}

机构：

[1] College of Computer Science,Shaanxi Normal University

[2] School of Computer Science,Xi'an Polytechnic University

来源：

CommunicationsinTheoreticalPhysics | 2019年 / 71卷 / 09期

基金：

中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;

关键词：

quantum coherence; superposition states; l1-norm of coherence;

D O I：

暂无

中图分类号：

O413 [量子论];

学科分类号：

摘要：

We find tight upper bound on the coherence of a superposition of two states in terms of the coherence of the two states constituting the superposition with l1-norm of coherence. Our upper bound is tighter than the one presented by Liu, et al. [Quantum Inf. Process. 15(2016) 4209.] We also generalize the results to the case that the superposition is constituted with more than two states in high dimension, and we give the corresponding upper bounds.

引用

页码：1084 / 1088

页数：5

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