科研之友
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摘要
We present a sufficient condition for a bipartite state to be separable via the strong positive partial transposition structure introduced in Chruscinski et al (2008 Phys. Rev. A 77 022113), from which we obtain a class of separable states. In particular, we prove that any classical-quantum state is a state of our class but not vice versa. Both finite- and infinite-dimensional systems are considered.
- 出版日期2012-12-21
- 单位山西大同大学; 太原理工大学
