Condensate forced out of hiding

Allan Griffin
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Allan Griffin: University of Toronto

Nature, 1998, vol. 391, issue 6662, 25-26

Abstract: The phenomenon of Bose-Einstein condensation has been thought to underlie superfluidity in liquid helium since 1938. Now at last direct evidence for the condensate has been found, by knocking atoms out of the surface of liquid helium using a beam of photons. The atoms all come out at the same angle — a clear sign that they started out with zero momentum parallel to the surface. This experiment is in effect a type of atom laser.

Date: 1998
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DOI: 10.1038/34058

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