与拉盖尔-高斯光束相互作用的两组分玻色-爱因斯坦凝聚体的密度分布
Density profiles of two-component Bose-Einstein condensates interacting with a Laguerre-Gaussian Beam
摘要：
研究了双组分玻色-爱因斯坦凝聚体（BEC）的密度分布及其与拉盖尔-高斯（LG）光束的微观相互作用。我们考虑了$^{87}$ Rb BEC的两个超精细自旋分量。LG光束的波长被假定为与原子德布罗意波长相当。组分间相互作用和组分内相互作用的竞争产生了有趣的BEC基态密度结构。我们证明了涡旋-反涡旋干涉及其对组分间相互作用和拉曼跃迁的依赖性。
英文摘要：
The density profiles of trapped two-component Bose-Einstein condensates (BEC) and its microscopic interaction with Laguerre Gaussian (LG) beam are studied. We consider the $^{87}$Rb BEC in two hyperfine spin components. The wavelength of the LG beam is assumed to be comparable to the atomic de-Broglie wavelength. Competitions between intra- and inter-component interactions produce interesting density structures of the ground state of BEC. We demonstrate vortex-antivortex interference and its dependence on the inter-component interactions and Raman transitions.
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