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arXiv · 0802.0362

Three-dimensional character of atom-chip-based rf-dressed potentials

J. J. P. van Es·S. Whitlock·T. Fernholz·A. H. van Amerongen·N. J. van Druten
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Abstract

We experimentally investigate the properties of radio-frequency-dressed potentials for Bose-Einstein condensates on atom chips. The three-dimensional potential forms a connected pair of parallel waveguides. We show that rf-dressed potentials are robust against the effect of small magnetic-field variations on the trap potential. Long-lived dipole oscillations of condensates induced in the rf-dressed potentials can be tuned to a remarkably low damping rate. We study a beam-splitter for Bose-Einstein condensates and show that a propagating condensate can be dynamically split in two vertically separated parts and guided along two paths. The effect of gravity on the potential can be tuned and compensated for using a rf-field gradient.

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J. J. P. van Es, S. Whitlock, T. Fernholz, A. H. van Amerongen, N. J. van Druten. 2008-02-04. Three-dimensional character of atom-chip-based rf-dressed potentials. https://doi.org/10.1103/physreva.77.063623

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