中国物理B ›› 2014, Vol. 23 ›› Issue (5): 50310-050310.doi: 10.1088/1674-1056/23/5/050310

• GENERAL • 上一篇    下一篇

Measurement-induced disturbance in Heisenberg XY spin model with Dzialoshinskii-Moriya interaction under intrinsic decoherence

沈诚诰, 张国锋, 樊开明, 朱汉杰   

  1. Department of Physics, School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
  • 收稿日期:2013-09-17 修回日期:2013-10-29 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11174024, 61227902, and 11174358), the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. YWF-13-D2-JC-19), and the Beijing City Youth Talent Plan, China.

Measurement-induced disturbance in Heisenberg XY spin model with Dzialoshinskii-Moriya interaction under intrinsic decoherence

Shen Cheng-Gao (沈诚诰), Zhang Guo-Feng (张国锋), Fan Kai-Ming (樊开明), Zhu Han-Jie (朱汉杰)   

  1. Department of Physics, School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
  • Received:2013-09-17 Revised:2013-10-29 Online:2014-05-15 Published:2014-05-15
  • Contact: Zhang Guo-Feng E-mail:gf1978zhang@buaa.edu.cn
  • About author:03.67.Mn; 03.65.Yz; 03.65.Ud
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11174024, 61227902, and 11174358), the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. YWF-13-D2-JC-19), and the Beijing City Youth Talent Plan, China.

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摘要： Quantum correlations measured by measurement-induced disturbance (MID) in a two-qubit Heisenberg XY spin model with Dzialoshinskii-Moriya (DM) interaction under intrinsic decoherence are investigated. MID is studied under various circumstances and the influences of the external dependencies on the final quantum state which has stable MID are discussed. Two kinds of initial quantum states are considered as well as different conclusions. MID appears to decay periodically during the processing of intrinsic decoherence; both DM interaction and intrinsic decoherence have a negative impact on the correlations. The MID of the stable state depends on several factors, except the parameter of the intrinsic decoherence. Moreover, we find a special initial state that is able to maintain the maximum quantum correlations during the processing of intrinsic decoherence.

关键词: intrinsic decoherence, measurement-induced disturbance, quantum correlations, dzialoshinskii-Moriya interaction

Abstract: Quantum correlations measured by measurement-induced disturbance (MID) in a two-qubit Heisenberg XY spin model with Dzialoshinskii-Moriya (DM) interaction under intrinsic decoherence are investigated. MID is studied under various circumstances and the influences of the external dependencies on the final quantum state which has stable MID are discussed. Two kinds of initial quantum states are considered as well as different conclusions. MID appears to decay periodically during the processing of intrinsic decoherence; both DM interaction and intrinsic decoherence have a negative impact on the correlations. The MID of the stable state depends on several factors, except the parameter of the intrinsic decoherence. Moreover, we find a special initial state that is able to maintain the maximum quantum correlations during the processing of intrinsic decoherence.

Key words: intrinsic decoherence, measurement-induced disturbance, quantum correlations, dzialoshinskii-Moriya interaction

中图分类号:  (Entanglement measures, witnesses, and other characterizations)

  • 03.67.Mn
03.65.Yz (Decoherence; open systems; quantum statistical methods) 03.65.Ud (Entanglement and quantum nonlocality)