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Canonical Form and Separability of PPT States in 2xMxN Composite Quantum Systems

X. H. Wang·S. M. Fei·Z. X. Wang·K. Wu
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Abstract

We investigate the canonical forms of positive partial transposition (PPT) density matrices in ${\cal C}^2 \otimes {\cal C}^M \otimes {\cal C}^N$ composite quantum systems with rank $N$. A general expression for these PPT states are explicitly obtained. From this canonical form a sufficient separability condition is presented.

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X. H. Wang, S. M. Fei, Z. X. Wang, K. Wu. 2003-12-03. Canonical Form and Separability of PPT States in 2xMxN Composite Quantum Systems. https://arxiv.org/abs/quant-ph/0312031

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