Different entanglement dynamical behaviors due to initial system-environment correlations
Different entanglement dynamical behaviors due to initial system-environment correlations
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DOI：
10.1103/physreva.82.022108
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发表时间：
2010-08
影响因子：
2.9
通讯作者：
Ying-Jie Zhang;X. Zou;Yun-Jie Xia;G. Guo
中科院分区：
文献类型：
--
作者：
Ying-Jie Zhang;X. Zou;Yun-Jie Xia;G. Guo
我们从理论上分析了两个量子比特系统和结构化环境之间的初始关联对两个量子比特纠缠动力学的作用。考虑两种初始系统环境相关，我们证明了系统环境量子相关会在初始阶段增加双量子位纠缠，而系统环境经典相关会导致初始阶段减少双量子位纠缠。不同的双量子位纠缠动力学可以由这两种初始系统环境关联引起。然而，在一定条件下，这两种初始系统环境相关对双量子位纠缠的作用是相同的。
We theoretically analyze the roles of initial correlations between a two-qubit system and a structured environment on entanglement dynamics of these two qubits. Considering two initial system-environment correlations, we show that the system-environment quantum correlation can initially increase the two-qubit entanglement, and the system-environment classical correlation would lead to the initially decreased two-qubit entanglement. Different two-qubit entanglement dynamics can be induced by these two initial system-environment correlations. However, under a certain condition, the roles of these two initial system-environment correlations on the two-qubit entanglement are the same.