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   作者單位： 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： 理論物理通訊（英文版）  ISTIC SCI 英文刊名： COMMUNICATIONS IN THEORETICAL PHYSICS  年，卷(期)： 2004 42(8)  分類號： O413  關鍵詞： separability   quantum entanglement   PPT state  

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