2003/05/14 by Shao-Ming Fei, Xiu-Hong Gao, Xiao-Hong Wang +2
Physics and Astronomy · #quant-ph
published as Int. J. Quant. Inform. 1(2003)37-49 · 12 pages
arxiv created 2003/05/14 · arxiv updated 2009/12/01
We consider the separability of rank two quantum states on multiple quantum spaces with different dimensions. The sufficient and necessary conditions for separability of these multiparty quantum states are explicitly presented. A nonseparability inequality is also given, for the case where one of the eigenvectors corresponding to nonzero eigenvalues of the density matrix is maximally entangled.