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光晶格中双组分偶极BECs的临界振幅

Keywords: 光晶格,双组分玻色ˉ爱因斯坦凝聚体,调制不稳定性,临界振幅,偶极ˉ偶极相互作用

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Abstract:

在线性稳定性分析和离散非线性Schr⒐dinger方程的基础上,对光晶格中双组分偶极玻色ˉ爱因斯坦凝聚体(BECs)调制不稳定性的临界振幅进行了研究,得到了光晶格中双组分偶极BECs原子系统的激发谱和调制不稳定性的临界振幅及它们与在位相互作用和由偶极ˉ偶极相互作用所导致的格点间BECs的相互作用之间的关系.结果显示,格点间BECs的相互作用对光晶格中双组分偶极BECs的调制不稳定性有很大的影响,这可为实际应用中如何操控双组分偶极BECs提供有用的信息.

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