Canonical Form and  Separability of PPT States in C2\otimes 
C2\otimes C2 \otimes CN Composite Quantum Systems

FEI Shao-Ming; GAO Xiu-Hong; WANG Xiao-Hong; WANG Zhi-Xi; WU Ke

Canonical Form and Separability of PPT States in C2\otimes C2\otimes C2 \otimes CN Composite Quantum Systems

FEI Shao-Ming,, GAO Xiu-Hong, WANG Xiao-Hong, WANG Zhi-Xi, and WU Ke

Communications in Theoretical Physics ›› 2003, Vol. 40 ›› Issue (05) : 515-518.

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Communications in Theoretical Physics ›› 2003, Vol. 40 ›› Issue (05) : 515-518.

Canonical Form and Separability of PPT States in C2\otimes C2\otimes C2 \otimes CN Composite Quantum Systems

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Abstract

We give a canonical form of PPT states in C²\otimes C²\otimes C² \otimes C^N with rank=N. From this canonical form a sufficient separability condition for these states is presented.

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separability / quantum entanglement

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FEI Shao-Ming, GAO Xiu-Hong, WANG Xiao-Hong, et al. Canonical Form and Separability of PPT States in C2\otimes C2\otimes C2 \otimes CN Composite Quantum Systems[J]. Communications in Theoretical Physics, 2003, 40(05): 515-518