Measuring non-Markovianity of processes with controllable system-environment interaction
Measuring non-Markovianity of processes with controllable system-environment interaction
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DOI：
10.1209/0295-5075/97/10002
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发表时间：
2012-01-01
期刊：
影响因子：
1.8
通讯作者：
Piilo, Jyrki
中科院分区：
文献类型：
--
作者：
Tang, Jian-Shun;Li, Chuan-Feng;Piilo, Jyrki
非马尔可夫过程是近年来开放量子系统研究中的一个重要课题。我们在实验上实现了保偏光纤中单光子的非马尔可夫退相干过程。该实验允许识别具有最强记忆效应的过程，以及基于开放系统及其环境之间的信息交换确定最近提出的量子非马尔可夫性程度的度量。我们的结果表明，在量子过程中的记忆的实验量化确实是可行的，这可能是有用的量子存储器和通信设备的发展。版权所有（C）EPLA，2012
Non-Markovian processes have recently become a central topic in the study of open quantum systems. We realize experimentally non-Markovian decoherence processes of single photons by combining time delay and evolution in a polarization-maintaining optical fiber. The experiment allows the identification of the process with strongest memory effects as well as the determination of a recently proposed measure for the degree of quantum non-Markovianity based on the exchange of information between the open system and its environment. Our results show that an experimental quantification of memory in quantum processes is indeed feasible which could be useful in the development of quantum memory and communication devices. Copyright (C) EPLA, 2012