Optical focusing of Bose-Einstein condensates

• URL: http://arxiv.org/abs/2011.14470v1
• Date: Sun, 29 Nov 2020 23:43:19 GMT
• Title: Optical focusing of Bose-Einstein condensates
• Authors: A. M. Kordbacheh, S. S. Szigeti and A. M. Martin
• Abstract summary: We theoretically investigate the optical focusing of a rubidium Bose-Einstein condensate onto a planar surface. Our analysis predicts that condensates of $105$ atoms could be focused down to $sim 10$nm widths.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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$^2$.

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