Evanescent-wave trapping and evaporative cooling of an atomic gas near two-dimensionality

Details Evanescent-wave trapping and evaporative cooling of an atomic gas near two-dimensionality Evanescent-wave trapping and evaporative cooling of an atomic gas near two-dimensionality

2002-08-16

arxiv.org/abs/physics/0208065v1

Phys. Rev. Lett. 90, 173001 (2003)

Physics

General Physics

Scientific paper

10.1103/PhysRevLett.90.173001

A dense gas of cesium atoms at the crossover to two-dimensionality is prepared in a highly anisotropic surface trap that is realized with two evanescent light waves. Temperatures as low as 100nK are reached with 20.000 atoms at a phase-space density close to 0.1. The lowest quantum state in the tightly confined direction is populated by more than 60%. The system offers intriguing prospects for future experiments on degenerate quantum gases in two dimensions.

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