Dynamics of Cohering and Decohering Power under Markovian Channels

作     者：陈明明 罗宇 邵连合 李永明 

作者机构：School of Mathematics and Information Science Shaanxi Normal University College of Computer Science Shaanxi Normal University 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2017年第67卷第11期

页      面：571-579页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.11271237,11671244 the Higher School Doctoral Subject Foundation of Ministry of Education of China under Grant No.20130202110001 the Central Universities under Grants Nos.2016TS060 and 2016CBY003 

主　　题：l1-norm Rnyi α-relative entropy Tsallis α-relative entropy single-qubit state Markovian channels cohering and decohering power 

摘      要：In this paper, we investigate the cohering and decohering power of the one-qubit Markovian channels with respect to coherence measures based on the l1-norm, the R′enyi α-relative entropy and the Tsallis α-relative entropy of coherence, respectively. The amplitude damping channel, phase damping channel, depolarizing channel, and flip channels are analytically calculated. It shows that the decohering power of the amplitude damping channel on the x, y, and z basis is equal to each other. The same phenomenon can be seen for the phase damping channel and the flip *** cohering power for the phase damping channel and the flip channels on the x, y basis also equals to that on the z basis. However, the cohering and decohering power of the depolarizing channel is independent to the reference *** the cohering power of the amplitude damping channel on the x, y basis is different to that on the z basis.