Alternative non-Markovianity measure by divisibility of dynamical maps

被引:96
|
作者
Hou, S. C. [1 ]
Yi, X. X. [1 ,2 ,3 ]
Yu, S. X. [2 ,3 ,4 ,5 ]
Oh, C. H. [2 ,3 ]
机构
[1] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
[2] Natl Univ Singapore, Ctr Quantum Technol, Singapore 117543, Singapore
[3] Natl Univ Singapore, Dept Phys, Singapore 117543, Singapore
[4] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
[5] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
来源
PHYSICAL REVIEW A | 2011年 / 83卷 / 06期
基金
新加坡国家研究基金会;
关键词
D O I
10.1103/PhysRevA.83.062115
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
By identifying non-Markovianity with nondivisibility, we propose a measure of non-Markovianity for quantum processes. Three examples are presented, and the measure of non-Markovianity is calculated and discussed for these examples. Comparisons with other measures of non-Markovianity are made. The present non-Markovianity measure has the merit that no optimization procedure is required and it is finite for any quantum process, which greatly enhances the practical relevance of the proposed measure.
引用
收藏
页数:6
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