Optical focusing of Bose-Einstein condensates

Abstract

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/$\mu$m${}^2$.

arXiv comment12 pages, 10 figures

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Cited by in corpus (5)

• Quantum Vacuum Sagnac Effect
• Focusing Atom Laser Beams
• Superradiant transfer of quantized orbital angular momentum between light and atoms in a ring trap
• The Influence of s-wave interactions on focussing of atoms
• Analytical Investigation of Focusing Bose-Einstein condensates