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arXiv · 1206.0845

Enhanced backscattering of a dilute Bose-Einstein condensate

Guillaume Labeyrie·Tomasz Karpiuk·Jean-François Schaff·Benoît Grémaud·Christian Miniatura·Dominique Delande
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Abstract

We study experimentally and numerically the quasi-bidimensional transport of a $^{87}$Rb Bose-Einstein condensate launched with a velocity $v_0$ inside a disordered optical potential created by a speckle pattern. A time-of-flight analysis reveals a pronounced enhanced density peak in the backscattering direction $-v_0$, a feature reminiscent of coherent backscattering. Detailed numerical simulations indicate however that other effects also contribute to this enhancement, including a "backscattering echo" due to the position-momentum correlations of the initial wave packet.

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Guillaume Labeyrie, Tomasz Karpiuk, Jean-François Schaff, Benoît Grémaud, Christian Miniatura, Dominique Delande. 2012-12-20. Enhanced backscattering of a dilute Bose-Einstein condensate. https://doi.org/10.1209/0295-5075%2F100%2F66001

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