中国物理B ›› 2014, Vol. 23 ›› Issue (5): 50304-050304.doi: 10.1088/1674-1056/23/5/050304

• GENERAL • 上一篇    下一篇

Thermal quantum and total correlations in spin-1 bipartite system

仇亮a, 叶宾b   

  1. a College of Sciences, China University of Mining and Technology, Xuzhou 221116, China;
    b School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
  • 收稿日期:2013-08-01 修回日期:2013-10-14 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:
    Project supported by the Fundamental Research Funds for the Central Universities of China (Grant No. 2012QNA37).

Thermal quantum and total correlations in spin-1 bipartite system

Qiu Liang (仇亮)a, Ye Bin (叶宾)b   

  1. a College of Sciences, China University of Mining and Technology, Xuzhou 221116, China;
    b School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
  • Received:2013-08-01 Revised:2013-10-14 Online:2014-05-15 Published:2014-05-15
  • Contact: Qiu Liang E-mail:lqiu@cumt.edu.cn
  • About author:03.67.Ud; 75.10.Jm; 65.90.+i
  • Supported by:
    Project supported by the Fundamental Research Funds for the Central Universities of China (Grant No. 2012QNA37).

摘要: Thermal quantum and total correlations of a two spin-1 Ising model in the presence of an external homogeneous magnetic field and the Dzyaloshinski-Moriya (DM) interaction are investigated. The result indicates that the DM interaction plays a leading role in the quantum correlation measured by measurement-induced disturbance except for the region with small DM interaction and low temperature, while the DM interaction and the external magnetic field play competing roles in the negativity. The thermal total correlations measured by an alternative new measure defined in terms of the Wigner-Yanase skew information and the quantum mutual information display differences in the same region.

关键词: two-qutrit system, measurement-induce disturbance, negativity

Abstract: Thermal quantum and total correlations of a two spin-1 Ising model in the presence of an external homogeneous magnetic field and the Dzyaloshinski-Moriya (DM) interaction are investigated. The result indicates that the DM interaction plays a leading role in the quantum correlation measured by measurement-induced disturbance except for the region with small DM interaction and low temperature, while the DM interaction and the external magnetic field play competing roles in the negativity. The thermal total correlations measured by an alternative new measure defined in terms of the Wigner-Yanase skew information and the quantum mutual information display differences in the same region.

Key words: two-qutrit system, measurement-induce disturbance, negativity

中图分类号: 

  • 03.67.Ud
75.10.Jm (Quantized spin models, including quantum spin frustration) 65.90.+i (Other topics in thermal properties of condensed matter)