Controlling of entanglement sudden death induced by Dzyaloshinskii-Moriya interaction

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ZHENG Qiang, SUN Ping, ZHANG Xiao-Ping and REN Zhong-Zhou. Controlling of entanglement sudden death induced by Dzyaloshinskii-Moriya interaction[J]. Chinese Physics C, 2010, 34(10): 1583-1586. doi: 10.1088/1674-1137/34/10/006
ZHENG Qiang, SUN Ping, ZHANG Xiao-Ping and REN Zhong-Zhou. Controlling of entanglement sudden death induced by Dzyaloshinskii-Moriya interaction[J]. Chinese Physics C, 2010, 34(10): 1583-1586.  doi: 10.1088/1674-1137/34/10/006 shu
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Received: 2009-12-31
Revised: 2010-02-07
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Controlling of entanglement sudden death induced by Dzyaloshinskii-Moriya interaction

    Corresponding author: ZHENG Qiang,

Abstract: 

We investigate the entanglement dynamics of a system composed of two non-interacting qubits, A and B. A third qubit, C, only has the Dzyaloshinskii-Moriya (DM) spin-orbit interaction with qubit B. We find that the DM interaction can induce the entanglement sudden death (ESD) of the system qubits A and B, and properly mixing the initial state of the system and adjusting the state of qubit C are two effective methods of controlling ESD.

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