玻色爱因斯坦凝聚体一维轴向干涉中的非线性现象  

Nonlinear Phenomena of One Dimensional Axial Interference of Bose-Einstein Condensates

作　　者：洪涛[1] 霍芸生[1] 王育竹[1] 

机构地区：[1]中国科学院上海光学精密机械研究所量子光学开放实验室,上海201800

出　　处：《光学学报》2000年第3期315-318,共4页Acta Optica Sinica

基　　金：国家自然科学基金!(1 98340 60 );国家科学技术部 95-预备 - 34项目资助课题

摘　　要：利用含时的 Gross- Pitaevskii方程 ,研究了轴对称的高密度玻色爱因斯坦凝聚体在干涉过程中因原子间相互作用而产生的非线性现象。发现玻色爱因斯坦凝聚体的一维轴向干涉条纹的密度分布是一种驻波状结构。通过原子波之间非线性耦合相互作用 ,这种结构可以表现为物质波光栅 。The nonlinear phenomena of high density cylindrical Bose Einstein condensates caused by atomic interactions in their interference process are studied by using the time dependent Gross Pitaevskii equation. It is found that the density structure of one dimensional interference fringes of Bose Einstein condensates is in form of a standing wave. Through the nonlinear coupling interactions between atomic waves, the structure appears as the matter wave gratings, and diffracts its surrounding atomic waves.

关 键 词：玻色爱因斯坦凝聚体 非线性原子光学 

分 类 号：O431[机械工程—光学工程]