The Influence of s-Wave Interactions on Focussing of Atoms

Atoms

Roham Richberg¹  Andrew M. Martin² 

[1] Research School of Physics, The Australian National University, Canberra 2601, Australia;School of Physics, University of Melbourne, Melbourne 3010, Australia;

关键词: Bose–Einstein condensate;    atom lithography;    s-wave interactions;    Gross–Pitaevskii equation;    classical trajectories;    optical lattice;   

DOI  :  10.3390/atoms9030037

来源: DOAJ

【 摘 要 】

The focusing of a rubidium Bose–Einstein condensate via an optical lattice potential is numerically investigated. The results are compared with a classical trajectory model which underestimates the width of the focused beam. Via the inclusion of the effects of interactions into the classical trajectories model, we show that it is possible to obtain reliable estimates for the width of the focused beam when compared to numerical integration of the Gross–Pitaevskii equation. Finally, we investigate the optimal regimes for focusing and find that for a strongly interacting Bose–Einstein condensate focusing of order 20 nm may be possible.

【 授权许可】

Unknown