中国物理B ›› 2015, Vol. 24 ›› Issue (3): 30304-030304.doi: 10.1088/1674-1056/24/3/030304

• GENERAL • 上一篇    下一篇

Measurement-induced nonlocality in the W and Greenberger-Horne-Zeilinger superposition states

林秦a, 白彦魁b, 叶明勇a, 林秀敏a   

  1. a Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou 350007, China;
    b College of Physical Science and Information Engineering and Hebei Advance Thin Films Laboratory, Hebei Normal University, Shijiazhuang 050024, China
  • 收稿日期:2014-07-12 修回日期:2014-10-08 出版日期:2015-03-05 发布日期:2015-03-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61275215 and 10905016), the National Fundamental Research Program of China (Grant No. 2011CBA00203), the Fujian Provincial College Funds for Distinguished Young Scientists, China (Grant No. JA14070), and the Natural Science Foundation of Hebei Province, China (Grant No. A2012205062).

Measurement-induced nonlocality in the W and Greenberger-Horne-Zeilinger superposition states

Lin Qin (林秦)a, Bai Yan-Kui (白彦魁)b, Ye Ming-Yong (叶明勇)a, Lin Xiu-Min (林秀敏)a   

  1. a Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou 350007, China;
    b College of Physical Science and Information Engineering and Hebei Advance Thin Films Laboratory, Hebei Normal University, Shijiazhuang 050024, China
  • Received:2014-07-12 Revised:2014-10-08 Online:2015-03-05 Published:2015-03-05
  • Contact: Ye Ming-Yong E-mail:myye@fjnu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61275215 and 10905016), the National Fundamental Research Program of China (Grant No. 2011CBA00203), the Fujian Provincial College Funds for Distinguished Young Scientists, China (Grant No. JA14070), and the Natural Science Foundation of Hebei Province, China (Grant No. A2012205062).

摘要:

Measurement-induced nonlocality (MIN) is a newly defined quantity to measure correlations in bipartite quantum states [Luo S and Fu S 2011 Phys. Rev. Lett. 106 120401]. MIN in the n-qubit W and Greenberger-Horne-Zeilinger (GHZ) superposition states is considered. It is revealed that n=3 and n≥ 4 states have very different characteristics, especially the monogamy relation about MIN, and the monogamy equality of MIN is held in all n-qubit W states (n≥ 3).

关键词: measurement-induced nonlocality, monogamy, W state

Abstract:

Measurement-induced nonlocality (MIN) is a newly defined quantity to measure correlations in bipartite quantum states [Luo S and Fu S 2011 Phys. Rev. Lett. 106 120401]. MIN in the n-qubit W and Greenberger-Horne-Zeilinger (GHZ) superposition states is considered. It is revealed that n=3 and n≥ 4 states have very different characteristics, especially the monogamy relation about MIN, and the monogamy equality of MIN is held in all n-qubit W states (n≥ 3).

Key words: measurement-induced nonlocality, monogamy, W state

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Mn (Entanglement measures, witnesses, and other characterizations)