Instability and control of a periodically driven Bose-Einstein condensate
Instability and control of a periodically driven Bose-Einstein condensate
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DOI：
10.1103/physreva.79.063612
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发表时间：
2008-09
影响因子：
2.9
通讯作者：
C. Creffield
中科院分区：
文献类型：
--
作者：
C. Creffield
研究了强周期驱动势作用下光晶格中玻色-爱因斯坦凝聚体的动力学行为。研究平均场版本的玻色-哈伯德模型表明，凝聚体变得动态不稳定时，有效的站间隧道成为负的。我们进一步展示了如何控制隧道的符号可以用来管理原子波包的色散。
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.