Return to the Origin as a Probe of Atomic Phase Coherence
Résumé
We report on the observation of the coherent enhancement of the return probability (" enhanced return to the origin " , ERO) in a periodically kicked cold-atom gas. By submitting an atomic wave packet to a pulsed, periodically shifted laser standing wave, we induce an oscillation of ERO in time and explain it in terms of a periodic, reversible dephasing in the weak-localization interference sequences responsible for ERO. Monitoring the temporal decay of ERO, we exploit its quantum coherent nature to quantify the decoherence rate of the atomic system.
| Origine | Fichiers produits par l'(les) auteur(s) |
|---|
Loading...