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

X. H. Wang; S. M. Fei; Z. X. Wang; K. Wu

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

Quantum Physics 2007-05-23 v1

Authors: X. H. Wang , S. M. Fei , Z. X. Wang , K. Wu

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.

Keywords

ppt states canonical form separability composite quantum systems density matrix

Cite

@article{arxiv.quant-ph/0312031,
  title  = {Canonical Form and Separability of PPT States in 2xMxN Composite Quantum Systems},
  author = {X. H. Wang and S. M. Fei and Z. X. Wang and K. Wu},
  journal= {arXiv preprint arXiv:quant-ph/0312031},
  year   = {2007}
}

Comments

11 pages, Latex

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