Measurements of Diffusion Resonances for the Atom Optics Quantum Kicked Rotor

Details Measurements of Diffusion Resonances for the Atom Optics Quantum Kicked Rotor Measurements of Diffusion Resonances for the Atom Optics Quantum Kicked Rotor

2002-08-14

arxiv.org/abs/quant-ph/0208090v2

Physics

Quantum Physics

11 pages, 3 figures, iopart.cls, revised version

Scientific paper

We present experimental observations of diffusion resonances for the quantum kicked rotor with weak decoherence. Cold caesium atoms are subject to a pulsed standing wave of near-resonant light, with spontaneous emission providing environmental coupling. The mean energy as a function of the pulse period is determined during the late-time diffusion regime for a constant probability of spontaneous emission per unit time. Structure in the late-time energy is seen to increase with physical kicking strength. The observed structure is related to Shepelyansky's predictions of the initial quantum diffusion rates.

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