Instability and control of a periodically driven Bose-Einstein condensate

被引：35
|
作者：
Creffield, C. E. [1 ]
机构：
[1] Univ Complutense Madrid, Dept Fis Mat, E-28040 Madrid, Spain
来源：
PHYSICAL REVIEW A | 2009年 / 79卷 / 06期
关键词：
Bose-Einstein condensation; Hubbard model; optical lattices; tunnelling; OPTICAL LATTICE;
D O I：
10.1103/PhysRevA.79.063612
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate the dynamics of a Bose-Einstein condensate held in an optical lattice under the influence of a strong periodic driving potential. Studying the mean-field version of the Bose-Hubbard model reveals that the condensate becomes dynamically unstable when the effective intersite tunneling becomes negative. We further show how controlling the sign of the tunneling can be used to manage the dispersion of an atomic wave packet.
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页数：5
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