Monogamy relations in tripartite quantum system

doi:10.1088/1674-1056/19/10/100310

Abstract This paper presents monogamy relations for three-qubit quantum states by using convex-roof extended negativity, which inspires studying the difference between the three entanglement measures, concurrence, negativity and convex-roof extended negativity. It finds that the convex-roof extended negativity is a stronger entanglement measure than concurrence in multipartite higher-dimensional quantum system.

Keywords: concurrence monogamy relation convex-roof extended negativity

Received: 30 January 2010
Revised: 09 March 2010
Accepted manuscript online:

PACS:	03.65.Ta	(Foundations of quantum mechanics; measurement theory)
	03.65.Ud	(Entanglement and quantum nonlocality)
	03.67.Lx	(Quantum computation architectures and implementations)
	03.67.Mn	(Entanglement measures, witnesses, and other characterizations)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10871227) and the Natural Science Foundation of Beijing (Grant No. 1092008).

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Li Jiao-Jiao(李姣姣) and Wang Zhi-Xi(王志玺) Monogamy relations in tripartite quantum system 2010 Chin. Phys. B 19 100310

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