The decoherence of quantum entanglement and teleportation in Bell-diagonal states 被引量：1

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

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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. 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.

作者秦猛李延标王晓白忠

机构地区 Institute of Science

出处《Chinese Physics C》 SCIE CAS CSCD 2012年第4期307-310,共4页 中国物理C（英文版）

基金 Supported by Youth Foundation of Institute of Science(QN-SL-2010-01) Pre-Research Foundation of PLA University of Science and Technology(20110515,20110101)

关键词 Bell-diagonal states entanglement TELEPORTATION Bell-diagonal states entanglement teleportation

分类号 O431.2 [机械工程—光学工程]

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Chinese Physics C

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