Theory of a single-atom laser including light forces

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dc.creatorSalzburger, Thomas
dc.creatorDomokos, Peter
dc.creatorRitsch, Helmut
dc.date2005-04-12
dc.date.accessioned2026-07-07T08:49:48Z
dc.date.available2026-07-07T08:49:48Z
dc.descriptionWe study a single incoherently pumped atom moving within an optical high-Q resonator in the strong coupling regime. Using a semiclassical description for the atom and field dynamics, we derive a closed system of differential equations to describe this coupled atom-field dynamics. For sufficiently strong pumping the system starts lasing when the atom gets close to a field antinode, and the associated light forces provide for self-trapping of the atom. For a cavity mode blue detuned with respect to the atomic transition frequency this is combined with cavity induced motional cooling allowing for long term steady-state operation of such a laser. The analytical results for temperature and field statistics agree well with our earlier predictions based on Quantum Monte Carlo simulations. We find sub-Doppler temperatures that decrease with gain and coupling strength and can even go beyond the limit of passive cavity cooling. Besides demonstrating the importance of light forces in single-atom lasers, this result also gives strong evidence to enhance laser cooling through stimulated emission in resonators.
dc.description10 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0504094
dc.identifierhttp://arxiv.org/abs/quant-ph/0504094
dc.identifierdoi:10.1103/PhysRevA.72.033805
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/144431
dc.subjectQuantum Physics
dc.titleTheory of a single-atom laser including light forces
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