Fast optimal frictionless atom cooling in harmonic traps

Details Fast optimal frictionless atom cooling in harmonic traps Fast optimal frictionless atom cooling in harmonic traps

2009-10-05

arxiv.org/abs/0910.0709v1

Phys. Rev. Lett. 104, 063002 (2010)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.104.063002

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 populations of the instantaneous initial and final levels invariant, but in a much shorter time. This may require that the harmonic trap becomes an expulsive parabolic potential in some time interval. The cooling times achieved are also shorter than previous minimal times using optimal-control bang-bang methods and real frequencies.

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