通过有效非线性实现超越 1/N 标度的磁场估计
量子物理
2009-04-14 v2
摘要
我们基于对量子 Fisher 信息的直接模拟提供了证据,表明在原子磁力计中,通过在拉莫尔进动期间使远失谐激光双程穿过原子系统,可以超越灵敏度随原子数 N 的 1/N 标度。此外,我们预测对于 N>>1,所提出的双程原子磁力计本质上可以实现 1/N 标度,而无需任何显著量的纠缠。
引用
@article{arxiv.0708.2730,
title = {Magnetic Field Estimation at and beyond 1/N Scaling via an Effective Nonlinearity},
author = {Bradley A. Chase and Heather L. Partner and Brigette D. Black and Benjamin Q. Baragiola and Robert L. Cook and JM Geremia},
journal= {arXiv preprint arXiv:0708.2730},
year = {2009}
}
备注
Please visit http://qmc.phys.unm.edu/ to download additional resources, including all source code and data files used to produce this manuscript