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

页数：6

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