3,144 research outputs found
Transverse Mode Revival of a Light-Compensated Quantum Memory
A long-lived quantum memory was developed based on light-compensated cold
Rb atoms in a dipole trap. The lifetime of the quantum memory was
improved by 40 folds, from 0.67 ms to 28 ms with the help of a compensation
laser beam. Oscillations of the memory efficiency due to the transverse mode
breathing of the singly-excited spin wave have been clearly observed and
clarified with a Monte-Carlo simulation procedure. With detailed analysis of
the decoherence processes of the spin wave in cold atomic ensembles, this
experiment provides a benchmark for the further development of high-quality
quantum memories.Comment: 4 pages, 4 figure
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