Separability of Rank Two Quantum States

Sergio Albeverio, Shao-Ming Fei, Debashish Goswami

Published 2001-09-19Version 1

Explicit sufficient and necessary conditions for separability of higher dimensional quantum systems with rank two density matrices are given. A nonseparability inequality is also presented, for the case where one of the eigenvectors corresponding to nonzero eigenvalues is a maximally entangled state.