论文标题
Bose-Einstein冷凝水的光聚焦
Optical focusing of Bose-Einstein condensates
论文作者
论文摘要
从理论上讲，我们研究了Rubidium Bose-Einstein冷凝物在平面表面上的光聚焦。我们的分析使用一种高斯变分方法，其中包括两体原子 - 原子相互作用和三体重组损失的影响。研究了诸如表面上聚焦BEC的宽度，峰密度和原子损失率之类的基本因素，并将其与GROSS-PITAEVSKII数值模拟进行了比较。我们在分析方法和数值模拟之间的结果中找到了合理的一致性。我们的分析预测，$ 10^5 $原子的冷凝物可能会集中在$ \ sim 10 $ nm宽度，可能允许纳米尺度原子沉积，峰值密度大于$ 10^5 $ atoms/$μ$ m $ m $^2 $。
We theoretically investigate the optical focusing of a rubidium Bose-Einstein condensate onto a planar surface. Our analysis uses a Gaussian variational method that includes the effects of two-body atom-atom interactions and three-body recombination losses. The essential factors such as the width, peak density and atom loss rate of the focused BEC profile on the surface are investigated and compared to Gross-Pitaevskii numerical simulations. We find a reasonable agreement in the results between our analytical approach and the numerical simulations. Our analysis predicts that condensates of $10^5$ atoms could be focused down to $\sim 10$nm widths, potentially allowing nanometer-scale atomic deposition with peak densities greater than $10^5$ atoms/$μ$m$^2$.
