Optimal transport of ultracold atoms in the non-adiabatic regime

A. Couvert (1) , T. Kawalec (1) , G. Reinaudi (1) , David Guery-Odelin (1)

1 LKB (Lhomond) - Laboratoire Kastler Brossel

We report on the transport of ultracold atoms with optical tweezers in the non-adiabatic regime i.e. on a time scale on the order of the oscillation period. To quantitatively interpret our data, we provide a fruitful analogy between the transport and the Fraunhofer diffraction of an object having a transmittance with the same shape as the one of the velocity profile imposed on center of the trap. The damping of the Kohn's mode due to the non-linear mixing turns out to be reminiscent of the effect of a finite coherence source for its optical counterpart.

Mots clés: transport optimal; non-adiabatic regime; ultracold atoms; optical tweezers

Domaines: Autre [cond-mat.other]

A. Couvert, T. Kawalec, G. Reinaudi, David Guery-Odelin. Optimal transport of ultracold atoms in the non-adiabatic regime. 2007. ⟨hal-00168928v1⟩