Nonlinear and chaotic dynamics of a Bose-Einstein condensate in an optical cavity
Nonlinear and chaotic dynamics of a Bose-Einstein condensate in an optical cavity
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DOI：
10.1103/physreva.89.033602
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发表时间：
2014-03
影响因子：
2.9
通讯作者：
M. Diver;G. Robb;G. Oppo
中科院分区：
文献类型：
--
作者：
M. Diver;G. Robb;G. Oppo
本文从理论上分析了在激光驱动下封闭在光腔中的玻色-爱因斯坦凝聚体（BEC）。在腔场动力学被完全消除的情况下，凝聚体与腔场之间的相互作用表现出一系列的非线性动力学行为，如多稳定性、准周期性和保守混沌振荡。我们发现，混沌振荡是无处不在的排斥原子原子相互作用时，包括在模型中。尽管完全耦合的BEC腔系统的复杂性，其非线性和混沌行为的基本特征是低维的，并考虑只有少数运动状态的BEC的演变很好地描述。
We present a theoretical analysis of a Bose-Einstein condensate (BEC) enclosed in an optical cavity driven by an external laser beam. In the limit where the cavity-field dynamics is adiabatically eliminated, the interaction between the condensate and the cavity displays a range of nonlinear dynamical behaviors such as multistability, quasiperiodicity, and conservative chaotic oscillations. We show that chaotic oscillations are ubiquitous when repulsive atom-atom interactions are included in the model. Despite the complexity of the full coupled BEC-cavity system, the essential features of its nonlinear and chaotic behavior are low-dimensional and are well described by considering the evolution of only a few motional states of the BEC.