Bound entangled states with nonzero distillable key rate
量子物理
2015-06-26 v4
摘要
In this paper, we present sufficient conditions for states to have positive distillable key rate. Exploiting the conditions, we show that the bound entangled states given by Horodecki et al. [Phys. Rev. Lett. 94, 160502 (2005), quant-ph/0506203] have nonzero distillable key rate, and finally exhibit a new class of bound entangled states with positive distillable key rate, but with negative Devetak-Winter lower bound of distillable key rate for the ccq states of their privacy squeezed versions.
引用
@article{arxiv.quant-ph/0612225,
title = {Bound entangled states with nonzero distillable key rate},
author = {Dong Pyo Chi and Jeong Woon Choi and Jeong San Kim and Taewan Kim and Soojoon Lee},
journal= {arXiv preprint arXiv:quant-ph/0612225},
year = {2015}
}
备注
7 pages, 1 figure, typos corrected, accepted for publication in PRA