On PPT States in CK(○)CM(○)CN Composite Quantum Systems
We study the general representations of positive partial transpose (PPT) states in CK CM CN. For the PPT states with rank-N a canonical form is obtained, from which a sufficient separability condition is presented.
作 者： WANG Xiao-Hong FEI Shao-Ming WANG Zhi-Xi WU Ke 作者单位： WANG Xiao-Hong,WANG Zhi-Xi,WU Ke(Department of Mathematics, Capital Normal University, Beijing 100037, China)FEI Shao-Ming(Department of Mathematics, Capital Normal University, Beijing 100037, China;Institute of Applied Mathematics, University of Bonn, 53115 Bonn, Germany)
刊 名： 理论物理通讯（英文版） ISTIC SCI 英文刊名： COMMUNICATIONS IN THEORETICAL PHYSICS 年，卷(期)： 2004 42(8) 分类号： O413 关键词： separability quantum entanglement PPT state