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arXiv · 0911.0203

A quantum trampoline for ultra-cold atoms

Martin Robert De Saint Vincent·Jean-Philippe Brantut·Christian J. Bordé·Alain Aspect·Thomas Bourdel·Philippe Bouyer
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Abstract

We have observed the interferometric suspension of a free-falling Bose-Einstein condensate periodically submitted to multiple-order diffraction by a vertical 1D standing wave. The various diffracted matter waves recombine coherently, resulting in high contrast interference in the number of atoms detected at constant height. For long suspension times, multiple-wave interference is revealed through a sharpening of the fringes. We use this scheme to measure the acceleration of gravity.

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Martin Robert De Saint Vincent, Jean-Philippe Brantut, Christian J. Bordé, Alain Aspect, Thomas Bourdel, Philippe Bouyer. 2009-11-01. A quantum trampoline for ultra-cold atoms. https://arxiv.org/abs/0911.0203

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