Monogamy of Measurement-Induced Nonlocality Based on Relative Entropy

作     者：罗宇 席政军 李永明 

作者机构：College of Computer Science Shaanxi Normal University 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2014年第61卷第11期

页      面：677-682页

核心收录：

学科分类：0303[法学-社会学] 12[管理学] 1204[管理学-公共管理] 03[法学] 030301[法学-社会学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.61228305,11271237,and 20130202110001,and 61303009 the Higher School Doctoral Subject Foundation of Ministry of Education of China under Grant No.20130202120002 Fundamental Research Funds for the Central Universities under Grant No.GK201302054 

主　　题：measurement-induced nonlocality relative entropy monogamy GHZ states W states 

摘      要：In this paper, using relative entropy, we study monogamous properties of measurement-induced nonlocality based on relative entropy. Depending on different measurement sides, we provide necessary and sufficient conditions for two types of monogamy inequalities. By the concept of nonlocality monogamy score, we find a necessary condition of the vanished nonlocality monogamy score for arbitrary three-party states. In addition, two types of necessary and sufficient conditions of the vanished nonlocality monogamy scores are obtained for any pure states. As an application, we show that measurement-induced nonlocality based on relative entropy can be viewed as a nonlocality witness to distinguish generalized GHZ states from the generalized W states.