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Observation of high-order quantum resonances in the kicked rotor

J. F. Kanem·S. Maneshi·M. Partlow·M. Spanner·A. M. Steinberg
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Abstract

Quantum resonances in the kicked rotor are characterized by a dramatically increased energy absorption rate, in stark contrast to the momentum localization generally observed. These resonances occur when the scaled Planck's constant hbar=(r/s)*4pi, for any integers r and s. However only the hbar=r*2pi resonances are easily observable. We have observed high-order quantum resonances (s>2) utilizing a sample of low temperature, non-condensed atoms and a pulsed optical standing wave. Resonances are observed for hbar=(r/16)*4pi r=2-6. Quantum numerical simulations suggest that our observation of high-order resonances indicates a larger coherence length than expected from an initially thermal atomic sample.

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J. F. Kanem, S. Maneshi, M. Partlow, M. Spanner, A. M. Steinberg. 2006-04-15. Observation of high-order quantum resonances in the kicked rotor. https://doi.org/10.1103/physrevlett.98.083004

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