Squeezed-Light Optical Magnetometry

被引:184
|
作者
Wolfgramm, Florian [1 ]
Cere, Alessandro [1 ]
Beduini, Federica A. [1 ]
Predojevic, Ana [1 ]
Koschorreck, Marco [1 ]
Mitchell, Morgan W. [1 ]
机构
[1] Inst Ciencies Fotoniques, Castelldefels 08860, Barcelona, Spain
关键词
ATOMIC MAGNETOMETER; QUANTUM-NOISE; ORIENTATION; ALIGNMENT;
D O I
10.1103/PhysRevLett.105.053601
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We demonstrate a light-shot-noise-limited magnetometer based on the Faraday effect in a hot unpolarized ensemble of rubidium atoms. By using off-resonant, polarization-squeezed probe light, we improve the sensitivity of the magnetometer by 3.2 dB. The technique could improve the sensitivity of the most advanced magnetometers and quantum nondemolition measurements of atomic spin ensembles.
引用
收藏
页数:4
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