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19 April 2024

» pubmed » pmid12786069

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Evanescent-wave trapping and evaporative cooling of an atomic gas at the crossover to two dimensions
M Hammes ; D Rychtarik ; B Engeser ; H-C Nägerl ; R Grimm ;
Date:	2 May 2003
Journal:	Phys Rev Lett, 90 (17), 173001
Abstract:	A dense gas of cesium atoms at the crossover to two dimensions is prepared in a highly anisotropic surface trap that is realized with two evanescent light waves. Temperatures as low as 100 nK 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 provides atoms at a mean distance from the surface as low as 1 microm, and offers intriguing prospects for future experiments on degenerate quantum gases in two dimensions.
Source:	PubMed, pmid12786069
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