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arXiv · 1107.0016

Bose-Einstein condensation transition studies for atoms confined in Laguerre-Gaussian laser modes

T. G. Akin·Sharon Kennedy·Ben Dribus·Jeremy Marzuola·Lise Johnson·Jason Alexander·E. R. I. Abraham
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Abstract

Multiply-connected traps for cold, neutral atoms fix vortex cores of quantum gases. Laguerre-Gaussian laser modes are ideal for such traps due to their phase stability. We report theoretical calculations of the Bose-Einstein condensation transition properties and thermal characteristics of neutral atoms trapped in multiply connected geometries formed by Laguerre-Gaussian LG{p}{l} beams. Specifically, we consider atoms confined to the anti-node of a LG{0}{1} laser mode detuned to the red of an atomic resonance frequency, and those confined in the node of a blue-detuned LG{1}{1} beam. We compare the results of using the full potential to those approximating the potential minimum with a simple harmonic oscillator potential. We find that deviations between calculations of the full potential and the simple harmonic oscillator can be up to 3%-8% for trap parameters consistent with typical experiments.

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T. G. Akin, Sharon Kennedy, Ben Dribus, Jeremy Marzuola, Lise Johnson, Jason Alexander, E. R. I. Abraham. 2011-06-30. Bose-Einstein condensation transition studies for atoms confined in Laguerre-Gaussian laser modes. https://doi.org/10.1016/j.optcom.2011.09.011

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