Isotropic vortex tangles in trapped atomic Bose-Einstein condensates via laser stirring
Isotropic vortex tangles in trapped atomic Bose-Einstein condensates via laser stirring
复制标题
通过激光搅拌捕获原子玻色-爱因斯坦凝聚态中的各向同性涡旋缠结
DOI：
10.1103/physreva.89.025602
复制
发表时间：
2014
影响因子：
2.9
通讯作者：
Allen A
中科院分区：
文献类型：
--
作者：
Allen A
囚禁原子玻色-爱因斯坦凝聚体中各向同性涡旋组态的产生为在介观尺度上解释量子湍流提供了一个平台。我们证明，激光诱导的障碍物在冷凝物内的图8路径移动提供了一个简单而有效的手段，产生各向同性的三维涡旋缠结，由于其最小的角动量的净转移到冷凝物。我们的表征涡结构及其各向同性是基于投影涡长度和速度统计通过Gross-Pitaevskii方程数值获得。我们的方法提供了一个可能的实验路线，产生和表征原子玻色-爱因斯坦凝聚体中的涡旋缠结和量子湍流。
The generation of isotropic vortex configurations in trapped atomic Bose-Einstein condensates offers a platform to elucidate quantum turbulence on mesoscopic scales. We demonstrate that a laser-induced obstacle moving in a figure-8 path within the condensate provides a simple and effective means to generate an isotropic three-dimensional vortex tangle due to its minimal net transfer of angular momentum to the condensate. Our characterization of vortex structures and their isotropy is based on projected vortex lengths and velocity statistics obtained numerically via the Gross-Pitaevskii equation. Our methodology provides a possible experimental route for generating and characterizing vortex tangles and quantum turbulence in atomic Bose-Einstein condensates.