Enhanced and Reduced Atom Number Fluctuations in a BEC Splitter

Maussang, Kenneth and Marti, G. Edward and Schneider, Tobias and Treutlein, Philipp and Li, Yun and Sinatra, Alice and Long, Romain and Estève, Jérôme and Reichel, Jakob. (2010) Enhanced and Reduced Atom Number Fluctuations in a BEC Splitter. Physical review letters, 105 (8). 080403.

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Official URL: http://edoc.unibas.ch/dok/A5841511

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We measure atom number statistics after splitting a gas of ultracold 87Rb atoms in a purely magnetic double-well potential created on an atom chip. Well below the critical temperature for Bose-Einstein condensation Tc, we observe reduced fluctuations down to -4.9 dB below the atom shot noise level. Fluctuations rise to more than +3.8 dB close to Tc, before reaching the shot noise level for higher temperatures. We use two-mode and classical field simulations to model these results. This allows us to confirm that the supershot noise fluctuations directly originate from quantum statistics.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentelle Nanophysik (Treutlein)
UniBasel Contributors:Treutlein, Philipp
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:05 Apr 2018 14:30
Deposited On:14 Sep 2012 06:47

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