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arXiv · 1705.00681

Non-adiabatic losses from radio-frequency dressed cold atom traps: beyond the Landau-Zener model

Kathryn A Burrows·Barry M Garraway·Hélène Perrin
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Abstract

Non-adiabatic 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 semi-classical 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 non-adiabatic 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.

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Kathryn A Burrows, Barry M Garraway, Hélène Perrin. 2017-05-01. Non-adiabatic losses from radio-frequency dressed cold atom traps: beyond the Landau-Zener model. https://doi.org/10.1103/physreva.96.023429

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