A Note on Quantum Entanglement and PPT

Shao-Ming Fei and Xianqing Li-Jost

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Submission date: 16. Dec. 2008
Pages: 10
published in: International journal of quantum information, 7 (2009) 3, p. 587-593 
DOI number (of the published article): 10.1142/S0219749909005328
Bibtex
PACS-Numbers: 03.65.Bz, 89.70.+c
Keywords and phrases: ppt, entanglement, separability
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Abstract:
We study quantum states for which the PPT criterion is both su±cient and necessary for separability. We present a class of 3 x 3 bipartite mixed states and show that these states are separable if and only if they are PPT.