Squeezed-Light Optical Magnetometry

Details Squeezed-Light Optical Magnetometry Squeezed-Light Optical Magnetometry

2010-08-10

arxiv.org/abs/1008.1721v2

Phys. Rev. Lett. 105, 053601 (2010)

Physics

Quantum Physics

v1: version published in Phys. Rev. Lett.; v2: version with five additional citations

Scientific paper

10.1103/PhysRevLett.105.053601

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.

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