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Updated: Jun 21, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Occupation statistics of a Bose-Einstein condensate for a driven Landau-Zener crossing
Katrina Smith-Mannschott1, Maya Chuchem, Moritz Hiller
1Department of Physics, Wesleyan University, Middletown, CT 06459, USA.
Abstract:
We consider an atomic Bose-Einstein condensate loaded in a biased double-well trap with tunneling rate K and interatomic interaction U. The Bose-Einstein condensate is prepared such that all N atoms are in the left well. We drive the system by sweeping the potential difference E between the two wells. Depending on the interaction u=NU/K and the sweep rate E, we distinguish three dynamical regimes: adiabatic, diabatic, and sudden and consider the occupation statistics of the final state. The analysis goes beyond mean-field theory and is complemented by a semiclassical picture.
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