Entanglement of Tripartite Bell Diagonal States

ZHAO Hui, ZHANG Xing-hua. Entanglement of Tripartite Bell Diagonal States[J]. Journal of Beijing University of Technology, 2011, 37(2): 306-313.

Citation:

ZHAO Hui, ZHANG Xing-hua. Entanglement of Tripartite Bell Diagonal States[J]. Journal of Beijing University of Technology, 2011, 37(2): 306-313.

Citation:

ZHAO Hui, ZHANG Xing-hua. Entanglement of Tripartite Bell Diagonal States[J]. Journal of Beijing University of Technology, 2011, 37(2): 306-313.

Abstract

A necessary condition of entanglement for tripartite 2⊗2⊗3 Bell diagonal states and a sufficient condition of entanglement for 3⊗3⊗3 Bell diagonal states are presented.Moreover,the relation between entanglement of 3⊗3⊗3 Bell diagonal states and partial transpose of density matrix is investigated.And an analytical expression of negative for Bell diagonal states is presented.

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