Separable State Decompositions for a Class of Mixed States
Xiaofen Huang, Shao-Ming Fei, Naihuan Jing, and Xianqing Li-Jost
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Submission date: 10. Mar. 2010
PACS-Numbers: 03.65.Bz, 89.70.+c
Keywords and phrases: ppt, entanglement, separability
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We study certain quantum states for which the PPT criterion is both sufficient and necessary for separability. We present a class of , , bipartite mixed states and derive the conditions of PPT for these states. The separable pure state decompositions of these states are explicitly constructed when they are PPT.