基于干涉与粒子计数的纠缠探测
量子物理
2007-05-23 v2
摘要
基于干涉可见度与总粒子数的不确定性,构造了双模连续系统纠缠的充分条件。待测观测量(粒子数与粒子数方差)在实验上相对容易获取。该方法可用于探测光场或Bose-Einstein凝聚体中的纠缠。与基于纠缠 witness 的标准方法不同,该条件表示为期望值为非线性的不等式。
引用
@article{arxiv.quant-ph/0306086,
title = {Entanglement Detection Based on Interference and Particle Counting},
author = {Geza Toth and Christoph Simon and Juan Ignacio Cirac},
journal= {arXiv preprint arXiv:quant-ph/0306086},
year = {2007}
}
备注
6 pages, revtex4; an example together with a couple of paragraphs extra explanation is inserted in Sec. II.A + minor changes before publication