Université Toulouse III - Paul Sabatier - Bat. 3R4 - 118 route de Narbonne - 31062 Toulouse Cedex 09 - France

Accueil > Publications > Publications par année > Année 2008

Optimal transport of ultracold atoms in the non-adiabatic regime

We report 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. We have found a set of discrete
transport durations for which the transport is not accompanied by
any excitation of the centre of mass of the cloud after
the transport. We show that the residual amplitude of oscillation
of the dipole mode is given by the Fourier transform of the
velocity profile imposed to the trap for the transport. This
formalism leads to a simple interpretation of our data and simple
methods for optimizing trapped particles displacement in the
non-adiabatic regime.

Voir en ligne : EPL, 83, 13001 (2008)