Separable State Decompositions for a Class of Mixed States

Xiaofen Huang, Shao-Ming Fei, Naihuan Jing, and Xianqing Li-Jost
(Please use for correspondence this email).

Submission date: 10. Mar. 2010
Pages: 12
PACS-Numbers: 03.65.Bz, 89.70.+c
Keywords and phrases: ppt, entanglement, separability
Download preprint: PDF (128 kB)

Abstract:
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.