Two Qubits Entanglement Dynamics in1D Heisenberg Chain with Intrinsic Decoherence  

作　　者：邵彬 张莉莉 邹健 

机构地区：[1]School of Science ,Beijing Institute of Technology

出　　处：《Journal of Beijing Institute of Technology》2006年第2期239-241,共3页北京理工大学学报（英文版）

基　　金：Sponsored bythe National Natural Science Foundation of China(10374007)

摘　　要：To reveal how the decoherence modifies the time evolution of the entanglement of quantum system, the intrinsic decoherence approach and the entanglement of formation are used, and the time evolution of entanglement for two-qubit 1D quantum Heisenberg model in an external uniform magnetic field is derived. It is shown that the external magnetic field can strengthen the effects of the intrinsic decoherence on the entanglement of the system.To reveal how the decoherence modifies the time evolution of the entanglement of quantum system, the intrinsic decoherence approach and the entanglement of formation are used, and the time evolution of entanglement for two-qubit 1D quantum Heisenberg model in an external uniform magnetic field is derived. It is shown that the external magnetic field can strengthen the effects of the intrinsic decoherence on the entanglement of the system.

关 键 词：ENTANGLEMENT Heisenberg chain phase decoherence 

分 类 号：O413[理学—理论物理]