Experimental Characterization of 1-D Velocity Selection

Details Experimental Characterization of 1-D Velocity Selection Experimental Characterization of 1-D Velocity Selection

2005-03-03

arxiv.org/abs/quant-ph/0503045v1

Physics

Quantum Physics

9 pages, 4 figures

Scientific paper

We demonstrate a 1-D velocity selection technique which relies on combining magnetic and optical potentials. We have selected atom clouds with temperatures as low as 2.9% of the initial temperature, with an efficiency of 1%. The efficiency (percentage of atoms selected) of the technique can vary as slowly as the square root of the final temperature. In addition to selecting the coldest atoms from a cloud, this technique imparts a sharp cut-off in the velocity distribution. The cold selected atoms are confined in a small well, spatially separated from higher energy atoms. Such a non-thermal distribution may be useful for atom optics experiments, such as studies of atom tunneling.

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