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29 March 2024
 
  » pubmed » pmid15169144

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Two-dimensional Bose-Einstein condensate in an optical surface trap
D Rychtarik ; B Engeser ; H-C Nägerl ; R Grimm ;
Date 30 Apr 2004
Journal Phys Rev Lett, 92 (17), 173003
AbstractWe report on the creation of a two-dimensional Bose-Einstein condensate of cesium atoms in a gravito-optical surface trap. The condensate is produced a few microm above a dielectric surface on an evanescent-wave atom mirror. After evaporative cooling by all-optical means, expansion measurements for the tightly confined vertical motion show energies well below the vibrational energy quantum. The presence of a condensate is observed in two independent ways by a magnetically induced collapse at negative scattering length and by measurements of the horizontal expansion.
Source PubMed, pmid15169144
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