Continuous quantum measurement in spin environments

Continuous quantum measurement in spin environments
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自旋环境中的连续量子测量

DOI:
10.1142/s0219749915500409
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发表时间:
2014-08
影响因子:
1.2
通讯作者:
Wang An Min
Wang An Min
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Xie Dong;Wang An Min

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我们推导出随机主方程(SME)的形式,它描述了以测量记录为条件的自旋环境中系统的退相干动力学。环境的马尔可夫和非马尔可夫性质可以通过基于弱量子测量(弱光谱)的光谱方法来揭示。由于相关环境可以导致非局部开放系统,尽管局部动力学是马尔可夫的,但表现出强烈的非马尔可夫效应,因此可以使用光谱方法来证明两个环境之间存在相关性。
We derive a formalism of stochastic master equations (SME) which describes the decoherence dynamics of a system in spin environments conditioned on the measurement record. Markovian and non-Markovian nature of environment can be revealed by a spectroscopy method based on weak quantum measurement (weak spectroscopy). On account of that correlated environments can lead to a nonlocal open system which exhibits strong non-Markovian effects although the local dynamics are Markovian, the spectroscopy method can be used to demonstrate that there is correlation between two environments.
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