DYNAMICS OF QUANTUM CORRELATIONS IN TWO-QUBIT SYSTEMS WITHIN NON-MARKOVIAN ENVIRONMENTS
DYNAMICS OF QUANTUM CORRELATIONS IN TWO-QUBIT SYSTEMS WITHIN NON-MARKOVIAN ENVIRONMENTS
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DOI：
10.1142/s0217979213450537
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发表时间：
2013-01-30
影响因子：
1.7
通讯作者：
Compagno, Giuseppe
中科院分区：
文献类型：
--
作者：
Lo Franco, Rosario;Bellomo, Bruno;Compagno, Giuseppe
在开放量子系统中，没有经典对应物的相关性的动力学行为的知识，如纠缠，非局域相关性和量子不和谐，是主要的兴趣，因为有可能利用这些相关性进行量子信息任务。在这里，我们回顾了一些最新的结果嵌入在非马尔可夫环境中的二分系统的相关性的动态，其记忆效应，影响在一个相关的方式系统的动态，似乎是更根本的比马尔可夫的实用目的。首先，我们回顾了两个量子比特系统在独立环境和公共环境下的纠缠恢复现象。然后，我们考虑了非马尔可夫退相通道中的量子不和谐动力学，并简要讨论了经典环境中量子关联恢复的发生。
Knowledge of the dynamical behavior of correlations with no classical counterpart, like entanglement, nonlocal correlations and quantum discord, in open quantum systems is of primary interest because of the possibility to exploit these correlations for quantum information tasks. Here we review some of the most recent results on the dynamics of correlations in bipartite systems embedded in non-Markovian environments that, with their memory effects, influence in a relevant way the system dynamics and appear to be more fundamental than the Markovian ones for practical purposes. Firstly, we review the phenomenon of entanglement revivals in a two-qubit system for both independent environments and a common environment. We then consider the dynamics of quantum discord in non-Markovian dephasing channel and briefly discuss the occurrence of revivals of quantum correlations in classical environments.