Concurrence of arbitrary dimensional bipartite quantum states
量子物理
2007-05-23 v2 介观与纳米尺度物理
摘要
We derive an analytical lower bound for the concurrence of a bipartite quantum state in arbitrary dimension. A functional relation is established relating concurrence, the Peres-Horodecki criterion and the realignment criterion. We demonstrate that our bound is exact for some mixed quantum states. The significance of our method is illustrated by giving a quantitative evaluation of entanglement for many bound entangled states, some of which fail to be identified by the usual concurrence estimation method.
引用
@article{arxiv.quant-ph/0506136,
title = {Concurrence of arbitrary dimensional bipartite quantum states},
author = {Kai Chen and Sergio Albeverio and Shao-Ming Fei},
journal= {arXiv preprint arXiv:quant-ph/0506136},
year = {2007}
}
备注
4 pages, published version