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Schemes for loading a Bose-Einstein condensate into a two-dimensional dipole trap

Yves Colombe·Demascoth Kadio·Maxim Olshanii·Brigitte Mercier·Vincent Lorent·Helene Perrin
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Abstract

We propose two loading mechanisms of a degenerate Bose gas into a surface trap. This trap relies on the dipole potential produced by two evanescent optical waves far detuned from the atomic resonance, yielding a strongly anisotropic trap with typical frequencies 40 Hz x 65 Hz x 30 kHz. We present numerical simulations based on the time-dependent Gross-Pitaevskii equation of the transfer process from a conventional magnetic trap into the surface trap. We show that, despite a large discrepancy between the oscillation frequencies along one direction in the initial and final traps, a loading time of a few tens of milliseconds would lead to an adiabatic transfer. Preliminary experimental results are presented.

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Yves Colombe, Demascoth Kadio, Maxim Olshanii, Brigitte Mercier, Vincent Lorent, Helene Perrin. 2003-04-29. Schemes for loading a Bose-Einstein condensate into a two-dimensional dipole trap. https://doi.org/10.1088/1464-4266%2F5%2F2%2F374

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