Non-Markovianity: initial correlations and nonlinear optical measurements.

Non-Markovianity: initial correlations and nonlinear optical measurements.
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DOI:
10.1098/rsta.2011.0203
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发表时间:
2012-08-13
期刊:
Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
影响因子:
--
通讯作者:
Tanimura Y
Tanimura Y
中科院分区:
其他
文献类型:
--
作者:
Dijkstra AG;Tanimura Y

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By extending the response function approach developed in nonlinear optics, we analytically derive an expression for the non-Markovianity in the time evolution of a system in contact with a quantum mechanical bath, and find a close connection with the directly observable nonlinear optical response. The result indicates that memory in the bath-induced fluctuations rather than in the dissipation causes non-Markovianity. Initial correlations between states of the system and the bath are shown to be essential for a correct understanding of the non-Markovianity. These correlations are included in our treatment through a preparation function.
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