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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 analyze the distribution of the atoms during the decay and determine the effects of heating arising from a finite temperature reservoir.
|Number of pages||14|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Publication status||Published - 16 Mar 2020|
- neutral atoms
- anisotropic harmonic potentials
- cold and ultracold molecules
- atomic gases
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1/10/18 → 30/09/21