Relating monogamy of quantum correlations and multisite entanglement

Prabhu, R. ; Pati, Arun Kumar ; Sen(De), Aditi ; Sen, Ujjwal (2012) Relating monogamy of quantum correlations and multisite entanglement Physical Review A, 86 (5). Article ID 052337. ISSN 1050-2947

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Official URL: http://journals.aps.org/pra/abstract/10.1103/PhysR...

Related URL: http://dx.doi.org/10.1103/PhysRevA.86.052337

Abstract

There are two important paradigms for defining quantum correlations in quantum information theory, viz. the information-theoretic and the entanglement-separability ones. We find an analytical relation between two measures of quantum correlations, one in each paradigm, and show that only a certain cone-like region on the two-dimensional space spanned by these measures is accessible to pure three-qubit states. The information-theoretic multiparty quantum correlation measure is related to the monogamy considerations of a bipartite information-theoretic quantum correlation measure, while the entanglement-separability multiparty measure is the generalized geometric measure, a genuine multiparty entanglement measure. We also find an analytical relation between two multiparty entanglement measures, and again obtain a cone-like accessible region in this case. One of the multisite measures in this case is related to the monogamy of a bipartite entanglement measure, while the other is again the generalized geometric measure.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:105423
Deposited On:09 Mar 2018 11:41
Last Modified:09 Mar 2018 11:41

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