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

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

2003-04-29

arxiv.org/abs/cond-mat/0304650v1

Journal of Optics B: Quantum and Semiclassical Optics 5 (2003) S155

Physics

Condensed Matter

Scientific paper

10.1088/1464-4266/5/2/374

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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