Suppression of spin projection noise in broadband atomic magnetometry

被引：49

作者：

Geremia, JM ^{[1
]}

Stockton, JK ^{[1
]}

Mabuchi, H ^{[1
]}

机构：

[1] CALTECH, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.94.203002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that quantum nondemolition measurement, combined with a suitable parameter estimation procedure, can improve the sensitivity of a broadband atomic magnetometer by reducing uncertainty due to spin projection noise. Furthermore, we provide evidence that real-time quantum feedback control offers robustness to classical uncertainties, including shot-to-shot atom number fluctuations, that would otherwise prevent quantum-limited performance.

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页数：4

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