title: Occupation statistics of a Bose-Einstein condensate for a driven Landau-Zener crossing.
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.
authors: Department of Physics, Wesleyan University, Middletown, CT 06459, USA.
authors: Katrina
authors: K
authors: Smith-Mannschott
authors: Maya
authors: M
authors: Chuchem
authors: Moritz
authors: M
authors: Hiller
authors: Tsampikos
authors: T
authors: Kottos
authors: Doron
authors: D
authors: Cohen