Simulations of Sisyphus cooling including multiple excited states

Details Simulations of Sisyphus cooling including multiple excited states Simulations of Sisyphus cooling including multiple excited states

2008-03-14

arxiv.org/abs/0803.2153v1

Physics

Atomic Physics

7 pages, 6 figures

Scientific paper

10.1140/epjd/e2008-00080-8

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.

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