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

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posted on 2023-06-09, 07:44 authored by Kathryn A Burrows, Hélène Perrin, Barry M. GarrawayBarry M. Garraway
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.

Funding

Devices based on Entanglement in Cold Arrays of Trapped Atoms; G0340; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/I010394/1

UK Quantum Technology Hub for Sensors and Metrology; G1511; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/M013294/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review A

ISSN

2469-9926

Publisher

American Physical Society

Issue

2

Volume

96

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Atomic, Molecular and Optical Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-08-31

First Open Access (FOA) Date

2017-08-31

First Compliant Deposit (FCD) Date

2017-08-31

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