Comparative investigation of freezing phenomena for quantum coherence and correlations  

作　　者：Lian-Wu Yang Wei Han Yun-Jie Xia 杨连武;韩伟;夏云杰(Shandong Provincial Key Laboratory of Computation Theory Physics,Department of Physics and Information Engineering,Jining University;Shandong Provincial Key Laboratory of Laser Polarization and Information Technology,Department of Physics,Qufu Normal University)

机构地区：[1]Shandong Provincial Key Laboratory of Computation Theory Physics, Department of Physics and Intbrmation Engineering Jining University, Qufu 273155, China [2]Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China

出　　处：《Chinese Physics B》2018年第4期164-169,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.61675115 and 11304179)

摘　　要：We show that the freezing phenomenon,exhibited by a specific class of two-qubit state under local nondissipative decoherent evolutions,is a common feature of the relative entropy measure of quantum coherence and correlation.All those measurement outcomes,preserve a constant value in the considered noisy channels,but the condition,property and mechanism of the freezing phenomenon for quantum coherence are different from those of the quantum correlation.We show that the freezing phenomenon,exhibited by a specific class of two-qubit state under local nondissipative decoherent evolutions,is a common feature of the relative entropy measure of quantum coherence and correlation.All those measurement outcomes,preserve a constant value in the considered noisy channels,but the condition,property and mechanism of the freezing phenomenon for quantum coherence are different from those of the quantum correlation.

关 键 词：freezing phenomenon quantum coherence quantum discord 

分 类 号：O413[理学—理论物理]