Controlled generation and manipulation of vortex dipoles in a Bose-Einstein condensate
Controlled generation and manipulation of vortex dipoles in a Bose-Einstein condensate
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DOI：
10.1103/physrevx.1.021003
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发表时间：
2011-06
期刊：
影响因子：
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通讯作者：
Tomohiko Aioi;T. Kadokura;T. Kishimoto;H. Saito
中科院分区：
文献类型：
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作者：
Tomohiko Aioi;T. Kadokura;T. Kishimoto;H. Saito
我们提出了利用红色或蓝色失谐激光的高斯光束在玻色-爱因斯坦凝聚体中产生和操纵涡旋偶极子的方法。速度控制的涡旋偶极子被证明是由一个红色失谐光束和两个蓝色失谐光束产生和发射的。研究了涡旋成核的临界速度。发射的涡旋偶极子可以用高斯光束捕获、弯曲、加速和减速。证明了涡旋偶极子之间的碰撞。
We propose methods to generate and manipulate vortex dipoles in a Bose-Einstein condensate using Gaussian beams of red or blue-detuned laser. Velocity-controlled vortex dipoles are shown to be created and launched by a red-detuned beam and by two blue-detuned beams. Critical velocities for the vortex nucleation are investigated. The launched vortex dipoles can be trapped, curved, accelerated, and decelerated using Gaussian beams. Collisions between vortex dipoles are demonstrated.