Journal
SCIENCE
Volume 337, Issue 6090, Pages 75-78Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1219166
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Funding
- Deutsche Forschungsgemeinschaft [He2334/12-1, SFB 925, GrK 1355]
- Excellence cluster Frontiers in Quantum Photon Science
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Conventional laser cooling relies on repeated electronic excitations by near-resonant light, which constrains its area of application to a selected number of atomic species prepared at moderate particle densities. Optical cavities with sufficiently large Purcell factors allow for laser cooling schemes, avoiding these limitations. Here, we report on an atom-cavity system, combining a Purcell factor above 40 with a cavity bandwidth below the recoil frequency associated with the kinetic energy transfer in a single photon scattering event. This lets us access a yet-unexplored regime of atom-cavity interactions, in which the atomic motion can be manipulated by targeted dissipation with sub-recoil resolution. We demonstrate cavity-induced heating of a Bose-Einstein condensate and subsequent cooling at particle densities and temperatures incompatible with conventional laser cooling.
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