Bipartite Entanglement Dynamics in Three Qubits System with Dzyaloshinskii-Moriya Interaction

We investigate the bipartite entanglement dynamics of the system composed by three qubits A, B, and C. There is no interaction between A and B, and that of C and B is Dzyaloshinskii-Moriya （DM） spin-orbit interaction. We find that the purity of qubits A and B and the initial state of the qubit C are...

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Bibliographic Details
Published inCommunications in theoretical physics Vol. 54; no. 9; pp. 417 - 420
Main Author 郑强 孙萍 张小平 任中洲
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.2010
Subjects
分子系统
初始状态
动力学系统
自旋轨道相互作用
量子位
量子信息处理
量子比特
量子纠缠态
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Summary:We investigate the bipartite entanglement dynamics of the system composed by three qubits A, B, and C. There is no interaction between A and B, and that of C and B is Dzyaloshinskii-Moriya （DM） spin-orbit interaction. We find that the purity of qubits A and B and the initial state of the qubit C are the two effective parameters to control the entanglement dynamics of the bipartite subsystems. This study sheds some lights on the control of quantum entanglement, which would be helpful for quantum information processing.
Bibliography:O313
11-2592/O3
O572.34
entanglement sudden death, entanglement lock, Dzyaloshinskii-Moriya interaction
ISSN:0253-6102
DOI:10.1088/0253-6102/54/3/07