The generalized partial transposition criterion for separability of multipartite quantum states
Quantum Physics
2009-11-07 v2
Abstract
We present a generalized partial transposition separability criterion for the density matrix of a multipartite quantum system. This criterion comprises as special cases the famous Peres-Horodecki criterion and the recent realignment criterion in [O. Rudolph, quant-ph/0202121] and [K. Chen, L.A. Wu, quant-ph/0205017]. It involves only straightforward matrix manipulations and is easy to apply. A quantitative measure of entanglement based on this criterion is also obtained.
Cite
@article{arxiv.quant-ph/0208058,
title = {The generalized partial transposition criterion for separability of multipartite quantum states},
author = {Kai Chen and Ling-An Wu},
journal= {arXiv preprint arXiv:quant-ph/0208058},
year = {2009}
}
Comments
6 pages, no figures, revtex4 style. Some misprints corrected, minor modificatins to some equations for clarity