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

作　　者：林秦 白彦魁 叶明勇 林秀敏 

机构地区：[1]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials,College of Physics and Energy,Fujian Normal University [2]College of Physical Science and Information Engineering and Hebei Advance Thin Films Laboratory,Hebei Normal University

出　　处：《Chinese Physics B》2015年第3期61-65,共5页中国物理B（英文版）

基　　金：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);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）.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 

分 类 号：O413.1[理学—理论物理] O431.2[理学—物理]