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Fractional resonances in the atom-optical delta-kicked accelerator

Saunders, M.; Halkyard, P.L.; Gardiner, S.A.; Challis, K.J.

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M. Saunders

P.L. Halkyard

K.J. Challis


We consider resonant dynamics in a dilute atomic gas falling under gravity through a periodically pulsed standing-wave laser field. Our numerical calculations are based on a Monte Carlo method for an incoherent mixture of noninteracting plane waves, and we show that quantum resonances are highly sensitive to the relative acceleration between the atomic gas and the pulsed optical standing wave. For particular values of the atomic acceleration, we observe fractional resonances. We investigate the effect of the initial atomic momentum width on the fractional resonances and quantify the sensitivity of fractional resonances to thermal effects.


Saunders, M., Halkyard, P., Gardiner, S., & Challis, K. (2009). Fractional resonances in the atom-optical delta-kicked accelerator. Physical Review A, 79(2),

Journal Article Type Article
Publication Date Feb 1, 2009
Deposit Date Jun 30, 2010
Publicly Available Date Jul 13, 2010
Journal Physical Review A
Print ISSN 1050-2947
Electronic ISSN 1094-1622
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 79
Issue 2
Publisher URL


Published Journal Article (1.6 Mb)

Copyright Statement
© 2009 by The American Physical Society. All rights reserved.

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