Separability of Tripartite Quantum States with Strong Positive Partial Transposes

被引：0
作者：
Xin-Yu Yu
Hui Zhao
机构：
[1] Beijing University of Technology,College of Applied Sciences
来源：
International Journal of Theoretical Physics | 2015年 / 54卷
关键词：
Strong positive partial transposition; Separability;
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学科分类号：
摘要：
The definition of quantum states with strong positive partial transpose (SPPT) in bipartite systems was presented in Phys. Rev. A 77, 022113, 2008 and the separability of super SPPT was studied in J. Phys. A: Math. Theor. 46, 205303, 2013. We generalize the definition of SPPT to tripartite quantum systems and study the separability of super SPPT in tripartite systems. We present that super SPPT states are bi-separable in 2 ⊗ 2 ⊗ N systems. Then a sufficient condition for fully separability of super SPPT states and a separable decomposition for any of these states are derived. Moreover, we generalize the results of 2 ⊗ 2 ⊗ N systems to the case of N1 ⊗ N2 ⊗ N3 systems.
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页码：292 / 301
页数：9
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