Deeply subrecoil two-dimensional Raman cooling

Details Deeply subrecoil two-dimensional Raman cooling Deeply subrecoil two-dimensional Raman cooling

2004-04-02

arxiv.org/abs/physics/0404012v2

Physics

Atomic Physics

8 pages, 6 figures, submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.70.043405

We report the implementation of a two-dimensional Raman cooling scheme using sequential excitations along the orthogonal axes. Using square pulses, we have cooled a cloud of ultracold Cesium atoms down to an RMS velocity spread of 0.39(5) recoil velocity, corresponding to an effective temperature of 30 nK (0.15 T_rec). This technique can be useful to improve cold atom atomic clocks, and is particularly relevant for clocks in microgravity.

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