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Simulations of Sisyphus cooling including multiple excited states
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
2008 (English)In: European Physical Journal D: Atomic, Molecular and Optical Physics, ISSN 1434-6060, E-ISSN 1434-6079, Vol. 48, no 2, 235-240 p.Article in journal (Refereed) Published
Abstract [en]

We extend the theory for laser cooling in a near-resonant optical lattice to include multiple excited hyperfine states. Simulations are performed treating the external degrees of freedom of the atom, i.e., position and momentum, classically, while the internal atomic states are treated quantum mechanically, allowing for arbitrary superpositions. Whereas theoretical treatments including only a single excited hyperfine state predict that the temperature should be a function of lattice depth only, except close to resonance, experiments have shown that the minimum temperature achieved depends also on the detuning from resonance of the lattice light. Our results resolve this discrepancy.

Place, publisher, year, edition, pages
2008. Vol. 48, no 2, 235-240 p.
National Category
Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-10063DOI: doi:10.1140/epjd/e2008-00080-8OAI: oai:DiVA.org:umu-10063DiVA: diva2:149734
Available from: 2008-06-12 Created: 2008-06-12 Last updated: 2017-12-14Bibliographically approved

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