Abstract
We study certain quantum states for which the PPT criterion is both sufficient and necessary for separability. A class of n×n bipartite mixed states is presented and the conditions of PPT for these states are derived. The separable pure state decompositions of these states are explicitly constructed when they are PPT.
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Acknowledgements
Huang gratefully acknowledges the grant support from the Natural Sciences Foundation for Hainan Province 111006. Jing is grateful for the support of Simons Foundation grant 198129 and NSFC grant 11271138 during the work. This work is also supported by the NSFC under number 11105226. We would like to acknowledge helpful discussions with Bobo Hua.
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Zhang, TG., Huang, X., Li-Jost, X. et al. Separable State Decompositions for a Class of Mixed States. Int J Theor Phys 52, 4148–4154 (2013). https://doi.org/10.1007/s10773-013-1727-8
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DOI: https://doi.org/10.1007/s10773-013-1727-8