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arXiv 0809.3198cond-mat.other
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磁驱动玻色-爱因斯坦凝聚体的不稳定性及其控制

Instability and control of a periodically-driven Bose-Einstein condensate

C. E. Creffield

摘要:

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。研究玻色-哈伯德模型的平均场版本表明,当有效的场间隧穿变为负值时,凝聚体变得非常不稳定。我们进一步展示了如何控制隧道的符号可以被用作一个强大的工具来管理原子波包的色散,从而创建一个脉冲原子孤子激光器。

英文摘要:

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 highly unstable when the effective intersite tunneling becomes negative. We further show how controlling the sign of the tunneling can be used as a powerful tool to manage the dispersion of an atomic wavepacket, and thus to create a pulsed atomic soliton laser.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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