Bell Inequalities Classifying Bi-separable Three-qubit States

Bao-Zhi Sun and Shao-Ming Fei

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Submission date: 04. Oct. 2006 (revised version: October 2006)
Pages: 10
published in: Physical review / A, 74 (2006) 3, art-no. 032335 
DOI number (of the published article): 10.1103/PhysRevA.74.032335
Bibtex
PACS-Numbers: 03.67.Mn, 02.20.Hj, 03.65.Ud
Keywords and phrases: Bell inequality, separability
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Abstract:
We present a set of Bell inequalities that gives rise to a finer classification of the entanglement for tripartite systems. These inequalities distinguish three possible bi-separable entanglements for three-qubit states. The three Bell operators we employed constitute an external sphere of the separable cube.