Journal
PHYSICAL REVIEW LETTERS
Volume 104, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.063002
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Categories
Funding
- Juan de la Cierva Program
- EU [EP/E058256]
- German Research Foundation (DFG)
- [GIU07/40]
- [FIS2009-12773-C0201]
- [60806041]
- [08QA14030]
- [2007CG52]
- [S30105]
- [ANR-09-BLAN-0134-01]
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A method is proposed to cool down atoms in a harmonic trap without phase-space compression as in a perfectly slow adiabatic expansion, i.e., keeping the same populations of instantaneous levels in the initial and final traps, but in a much shorter time. This may require that the harmonic trap become transiently an expulsive parabolic potential. The cooling times achieved are shorter than those obtained using optimal-control bang-bang methods and real frequencies.
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