Affiliation:
1. Jaypee Institute of Information Technology
Abstract
The position response of a particle subjected to a perturbation is of
general interest in physics. We study the modification of the position
response function of an ensemble of cold atoms in a magneto-optical
trap (MOT) in the presence of tunable light-assisted interactions. We
subject the cold atoms to an intense laser light tuned near the
photoassociation (PA) resonance and observe the position response of
the atoms subjected to a sudden displacement. Surprisingly, we observe
that the entire cold atomic cloud undergoes collective oscillations.
We use a generalized quantum Langevin approach to theoretically
analyze the results of the experiments and find good agreement.
Funder
Department of Science and Technology,
Ministry of Science and Technology, India