Smith-Mannschott Katrina, Chuchem Maya, Hiller Moritz, Kottos Tsampikos, Cohen Doron
Department of Physics, Wesleyan University, Middletown, CT 06459, USA.
Phys Rev Lett. 2009 Jun 12;102(23):230401. doi: 10.1103/PhysRevLett.102.230401. Epub 2009 Jun 8.
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.
我们考虑一个加载在具有隧穿率(K)和原子间相互作用(U)的偏置双阱势中的原子玻色 - 爱因斯坦凝聚体。制备玻色 - 爱因斯坦凝聚体，使得所有(N)个原子都处于左阱中。我们通过扫描两个阱之间的电势差(E)来驱动该系统。根据相互作用(u = NU/K)和扫描速率(E)，我们区分三种动力学区域：绝热、非绝热和突然，并考虑最终状态的占据统计。该分析超越了平均场理论，并辅以半经典图像。
