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Manifestation of quantum resonances and antiresonances in a finite temperature dilute atomic gas.

Saunders, M. and Halkyard, P. L. and Challis, K. J. and Gardiner, S. A. (2007) 'Manifestation of quantum resonances and antiresonances in a finite temperature dilute atomic gas.', Physical review A., 76 (4). 043415 .


We investigate the effect of temperature on resonant and antiresonant dynamics in a dilute atomic gas kicked periodically by a standing-wave laser field. Our numerical calculations are based on a Monte Carlo method for an incoherent mixture of noninteracting plane waves, and show that the atomic dynamics are highly sensitive to the initial momentum width of the gas. We explain this sensitivity by examining the time evolution of individual atomic center-of-mass momentum eigenstates with varying quasimomentum, and we determine analytic expressions for the evolution of the second-order momentum moment to illustrate the range of behaviors.

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Publisher statement:© 2007 by The American Physical Society. All rights reserved.
Record Created:30 Jun 2010 10:35
Last Modified:08 Dec 2010 09:56

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