Journal
PHYSICAL REVIEW LETTERS
Volume 105, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.053601
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Funding
- Spanish Ministry of Science and Innovation
- ILUMA project [FIS2008-01051]
- ICFO-OCE collaborative research program
- Commission for Universities and Research of the Department of Innovation, Universities and Enterprises of the Catalan Government
- European Social Fund
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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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