PhysRevA.74.053413.pdf (988.47 kB)
Evaporative cooling in a radio-frequency trap
journal contribution
posted on 2023-06-07, 21:14 authored by Carlos L Garrido Alzar, Hélène Perrin, Barry M. GarrawayBarry M. Garraway, Vincent LorentA theoretical investigation for implementing a scheme of forced evaporative cooling in radio-frequency (rf) adiabatic potentials is presented. Supposing the atoms to be trapped in a combination of a dc magnetic field and a rf field at frequency 1, the cooling procedure is facilitated using a second rf source at frequency 2. This second rf field produces a controlled coupling between the spin states dressed by 1. The evaporation is then possible in a pulsed or continuous mode. In the pulsed case, atoms with a given energy are transferred into untrapped dressed states by abruptly switching off the 2 coupling. In the continuous case, it is possible for energetic atoms to adiabatically follow the doubly dressed states and escape out of the trap. Our results also show that when 1 and 2 are separated by at least the Rabi frequency associated with 1, additional evaporation zones appear which can make this process more efficient.
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Publication status
- Published
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- Published version
Journal
Physical Review AISSN
1050-2947External DOI
Issue
5Volume
74Page range
0534131-05341310Department affiliated with
- Physics and Astronomy Publications
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- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06First Open Access (FOA) Date
2016-03-22First Compliant Deposit (FCD) Date
2016-11-18Usage metrics
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