Counting Cold Collisions

Details Counting Cold Collisions Counting Cold Collisions

1999-10-29

arxiv.org/abs/quant-ph/9910120v2

J. Phys. B: At. Mol. Opt. Phys. 33, L135 (2000).

Physics

Quantum Physics

LaTeX 2e, 5 pages, 4 Postscript figures

Scientific paper

10.1088/0953-4075/33/4/105

We have experimentally explored a novel possibility to study exoergic cold atomic collisions. Trapping of small countable atom numbers in a shallow magneto-optical trap and monitoring of their temporal dynamics allows us to directly observe isolated two-body atomic collisions and provides detailed information on loss statistics. A substantial fraction of such cold collisional events has been found to result in the loss of one atom only. We have also observed for the first time a strong optical suppression of ground-state hyperfine-changing collisions in the trap by its repump laser field.

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