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MiS Preprint
73/2013

A Note on Resistance of NPT to Mixture of Separable States

Bobo Hua, Xiu-Hong Gao, Ming-Jing Zhao and Shao-Ming Fei

Abstract

We study the stability of NPT property of an arbitrary pure entangled state under the mixture of arbitrary pure separable states. For bipartite pure states with Schmidt number $n$ $(n>1)$ which is NPT, we show that this state is still NPT when it is mixed with no more than $\frac{n(n-1)}{2}-1$ arbitrary pure separable states. This result is generalized to multipartite case.

Received:
Aug 7, 2013
Published:
Aug 12, 2013
PACS:
03.65.Ud, 03.67.Mn
Keywords:
partial transposition, separable state, entanglement

Related publications

inJournal
2013 Repository Open Access
Bobo Hua, Xiu-Hong Gao, Ming-Jing Zhao and Shao-Ming Fei

A note on resistance of NPT to mixture of separable states

In: International journal of theoretical physics, 52 (2013) 9, pp. 3007-3010