The decoherence of quantum entanglement and teleportation in Bell-diagonal states

被引：3
|
作者：
Qin Meng [1 ]
Li Yan-Biao [1 ]
Wang Xiao [1 ]
Bai Zhong [1 ]
机构：
[1] PLA Univ Sci & Technol, Inst Sci, Nanjing 211101, Jiangsu, Peoples R China
来源：
CHINESE PHYSICS C | 2012年 / 36卷 / 04期
关键词：
Bell-diagonal states; entanglement; teleportation; SEPARABILITY;
D O I：
10.1088/1674-1137/36/4/002
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We study the dynamics of entanglement and teleportation in Bell-diagonal states. Using the concepts of concurrence and fidelity, the analytical expressions of the entanglement, the output entanglement and the average fidelity with decoherence are obtained for this model. We discover a class of initial states in which the output entanglement and the average fidelity are destroyed by decoherence. The quality of teleportation depends on the system parameters and time.
引用
收藏
页码：307 / 310
页数：4
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