Suppression of collisional decoherence
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We employ a continuous dynamical decoupling scheme to suppress the decoherence induced by elastic collisions of cold atoms. Using a continuous echo pulse we achieve a thirty-fold increase in the coherence time of Rb87 atoms trapped in a dipole trap. Coherence times of more than 100ms are demonstrated for an ensemble with an optical depth of 120.
4 pages, 5 figures, typos corrected and a few minor changes
4 pages, 5 figures, typos corrected and a few minor changes