Chin. Phys. B ›› 2014, Vol. 23 ›› Issue (1): 10302-010302.doi: 10.1088/1674-1056/23/1/010302

• GENERAL • 上一篇    下一篇

Monogamy of quantum correlations in the one-dimensional anisotropic XY model

徐帅, 宋学科, 叶柳   

  1. School of Physics & Material Science, Anhui University, Hefei 230039, China
  • 收稿日期:2013-04-09 修回日期:2013-06-04 出版日期:2013-11-12 发布日期:2013-11-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grants Nos. 11074002 and 61275119), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20103401110003), and the Personal Development Foundation of Anhui Province, China (Grant No. 2008Z018).

Monogamy of quantum correlations in the one-dimensional anisotropic XY model

Xu Shuai (徐帅), Song Xue-Ke (宋学科), Ye Liu (叶柳)   

  1. School of Physics & Material Science, Anhui University, Hefei 230039, China
  • Received:2013-04-09 Revised:2013-06-04 Online:2013-11-12 Published:2013-11-12
  • Contact: Ye Liu E-mail:yeliu@ahu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grants Nos. 11074002 and 61275119), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20103401110003), and the Personal Development Foundation of Anhui Province, China (Grant No. 2008Z018).

摘要: In this paper, the monogamy properties of some quantum correlations, including the geometric quantum discord, concurrence, entanglement of formation and entropy quantum discord, in the anisotropic spin-1/2 XY model with staggered Dzyaloshinskii–Moriya (DM) interaction have been investigated using the quantum renormalization group (QRG) method. We summarize the monogamy relation for different quantum correlation measures and make an explicit comparison. Through mathematical calculations and analysis, we obtain that no matter whether the QRG steps are carried out, the monogamy of the given states are always unaltered. Moreover, we conclude that the geometric quantum discord and concurrence obey the monogamy property while other quantum correlation measures, such as entanglement of formation and quantum discord, violate it for this given model.

关键词: monogamy relation, geometric quantum discord, entanglement of formation, entropy quantum discord

Abstract: In this paper, the monogamy properties of some quantum correlations, including the geometric quantum discord, concurrence, entanglement of formation and entropy quantum discord, in the anisotropic spin-1/2 XY model with staggered Dzyaloshinskii–Moriya (DM) interaction have been investigated using the quantum renormalization group (QRG) method. We summarize the monogamy relation for different quantum correlation measures and make an explicit comparison. Through mathematical calculations and analysis, we obtain that no matter whether the QRG steps are carried out, the monogamy of the given states are always unaltered. Moreover, we conclude that the geometric quantum discord and concurrence obey the monogamy property while other quantum correlation measures, such as entanglement of formation and quantum discord, violate it for this given model.

Key words: monogamy relation, geometric quantum discord, entanglement of formation, entropy quantum discord

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.-a (Quantum information) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)