Dissipative dynamics and cooling rates of trapped impurity atoms immersed in a reservoir gas

Autor:	Lena, R. G., Daley, A. J.
Rok vydání:	2019
Předmět:	Condensed Matter - Quantum Gases Quantum Physics
Zdroj:	Phys. Rev. A 101, 033612 (2020)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.101.033612
Popis:	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. Comment: 15 pages, 18 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1912.04347 Zobrazit plný text záznamu View this record from Arxiv