Journal
PHYSICAL REVIEW A
Volume 79, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.043815
Keywords
atom-photon collisions; Faraday effect; laser cooling; paramagnetism; quantum optics; radiation pressure; rubidium
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Funding
- Spanish Ministry of Science and Education [FIS2004-05830]
- Consolider-Ingenio 2010 [QOIT]
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We describe the implementation of a system for studying light-matter interactions using an ensemble of 10(6) cold rubidium 87 atoms trapped in a single-beam optical dipole trap. In this configuration the elongated shape of the atomic cloud increases the strength of the collective light-atom coupling. Trapping all optically allows for long storage times in a low decoherence environment. We are able to perform several thousands of measurements on one atomic ensemble with little destruction. We report results on paramagnetic Faraday rotations from a macroscopically polarized atomic ensemble. Our results confirm that strong light-atom coupling is achievable in this system which makes it attractive for single-pass quantum information protocols.
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