Burrows, Kathryn A, Perrin, Hélène and Garraway, Barry M (2017) Nonadiabatic losses from radio-frequency-dressed cold-atom traps: beyond the Landau-Zener model. Physical Review A, 96 (2). ISSN 2469-9926

PDF (Physical Review A 96, 023429 (2017) https://doi.org/10.1103/PhysRevA.96.023429) - Published Version Download (799kB)

Abstract

Nonadiabatic decay rates for a radio-frequency-dressed magnetic trap are calculated using Fermi’s golden rule: that is, we examine the probability for a single atom to make transitions out of the dressed trap and into a continuum in the adiabatic limit, where perturbation theory can be applied. This approach can be compared to the semiclassical Landau-Zener theory of a resonant dressed atom trap, and it is found that, when carefully implemented, the Landau-Zener theory overestimates the rate of nonadiabatic spin-flip transitions in the adiabatic limit. This indicates that care is needed when determining requirements on trap Rabi frequency and magnetic-field gradient in practical atom traps.

Item Type:	Article
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups:	Atomic, Molecular and Optical Physics Research Group
Subjects:	Q Science > QC Physics
Depositing User:	Billy Wichaidit
Date Deposited:	31 Aug 2017 11:12
Last Modified:	31 Aug 2017 11:22
URI:	http://srodev.sussex.ac.uk/id/eprint/69946

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