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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.
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