Dissipative dynamics and cooling rates of trapped impurity atoms immersed in a reservoir gas
arXiv:1912.04347 · doi:10.1103/PhysRevA.101.033612
Abstract
We study the dissipative dynamics of neutral atoms in anisotropic harmonic potentials, immersed in a reservoir species that is not trapped by the harmonic potential. Considering initial motional excitation of the atoms along one direction, we explore the resulting spontaneous emission of reservoir excitations, across a range of trap parameters from strong to weak radial confinement. In different limits these processes are useful as a basis for analogies to laser cooling, or as a means to introduce controlled dissipation to many-body dynamics. For realistic experimental parameters, we analyse the distribution of the atoms during the decay and determine the effects of heating arising from a finite temperature reservoir.
arXiv comment15 pages, 18 figures
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