Suppression and enhancement of impurity scattering in a Bose-Einstein condensate

Abstract

Impurity atoms propagating at variable velocities through a trapped Bose-Einstein condensate were produced using a stimulated Raman transition. The redistribution of momentum by collisions between the impurity atoms and the stationary condensate was observed in a time-of-flight analysis. The collisional cross section was dramatically reduced when the velocity of the impurities was reduced below the speed of sound of the condensate, in agreement with the Landau criterion for superfluidity. For large numbers of impurity atoms, we observed an enhancement of atomic collisions due to bosonic stimulation. This enhancement is analogous to optical superradiance.

4 pages, 4 figures

References in corpus (6)

• Vortex formation in a stirred Bose-Einstein condensate
• Vortices in a Bose-Einstein Condensate
• Evidence for a critical velocity in a Bose-Einstein condensed gas
• Excitation of phonons in a Bose-Einstein condensate by light scattering
• Observation of the scissors mode and superfluidity of a trapped Bose-Einstein condensed gas
• Elastic scattering loss of atoms from colliding Bose-Einstein condensate wavepackets

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