A class of separable quantum states
Yu Jing Guo, Jinchuan Hou · Journal of Physics A Mathematical and Theoretical · 2012
We present a sufficient condition for a bipartite state to be separable via the strong positive partial transposition structure introduced in Chru?ci?ski 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.