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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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Journal of Beijing University of Technology
ISSN： 0254-0037
Year： 2011
Issue： 2
Volume： 37
Page： 306-313
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ESI Highly Cited Papers on the List： 0 Unfold All
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30 Days PV： 5
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