纠缠concurrence的下界与可分性条件
量子物理
2009-11-13 v4
摘要
我们得到了任意维 bipartite 量子系统 concurrence 的解析下界，这些下界与基于局域不确定关系和密度矩阵 Bloch 表示的可分性条件的违背相关。我们还通过考察 Peres-Horodecki 以及可计算交叉范数或重排判据，说明了这些结果如何补充并改进了最近推导出的结果[K. Chen, S. Albeverio, and S.-M. Fei, Phys. Rev. Lett. 95, 040504 (2005)]。
引用
@article{arxiv.quant-ph/0611229,
title = {Lower bounds on concurrence and separability conditions},
author = {Julio I. de Vicente},
journal= {arXiv preprint arXiv:quant-ph/0611229},
year = {2009}
}
备注
5 pages, 1 figure; minor changes, references added; final version: minor correction in proof of lemma 1, scope of theorem 2 clarified, to appear in PRA; mistake in proof of lemma 1 of published version corrected, results unchanged