Distribution of Bell-inequality violation versus multiparty-quantum-correlation measures

被引:4
|
作者
Sharma, Kunal [1 ,2 ]
Das, Tamoghna [2 ]
Sen, Aditi [2 ]
Sen, Ujjwal [2 ]
机构
[1] Indian Inst Sci Educ & Res Bhopal, Bhopal 462066, India
[2] Harish Chandra Res Inst, Chhatnag Rd, Allahabad 211019, Uttar Pradesh, India
关键词
UNEXTENDIBLE PRODUCT BASES; ERROR-CORRECTING CODES; ENTANGLEMENT; STATES; CRYPTOGRAPHY; MONOGAMY; PHOTONS; DISCORD;
D O I
10.1103/PhysRevA.93.062344
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Violation of a Bell inequality guarantees the existence of quantum correlations in a shared quantum state. A pure bipartite quantum state, having nonvanishing quantum correlation, always violates a Bell inequality. Such correspondence is absent for multipartite pure quantum states in the case of multipartite correlation function Bell inequalities with two settings at each site. We establish a connection between the monogamy of Bell-inequality violation and multiparty quantum correlations for shared multisite quantum states. We believe that the relation is generic, as it is true for a number of different multisite measures that are defined from radically different perspectives. Precisely, we quantify the multisite-quantum-correlation content in the states by generalized geometric measure, a genuine multisite entanglement measure, as well as three monogamy-based multiparty-quantum-correlation measures, viz., 3-tangle, quantum-discord score, and quantum-work-deficit score. We find that generalized Greenberger-Horne-Zeilinger states and another single-parameter family of states, which we refer to as the special Greenberger-Horne-Zeilinger states, have the status of extremal states in such relations.
引用
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页数:9
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