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.
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页码：1084 / 1088
页数：5
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