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Resolved-sideband Raman cooling to the ground state of an optical lattice

S. E. Hamann·D. L. Haycock·G. Klose·P. H. Pax·I. H. Deutsch·P. S. Jessen
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Abstract

We trap neutral Cs atoms in a two-dimensional optical lattice and cool them close to the zero-point of motion by resolved-sideband Raman cooling. Sideband cooling occurs via transitions between the vibrational manifolds associated with a pair of magnetic sublevels and the required Raman coupling is provided by the lattice potential itself. We obtain mean vibrational excitations \bar{n}_x \approx \bar{n}_y \approx 0.01, corresponding to a population \sim 98% in the vibrational ground state. Atoms in the ground state of an optical lattice provide a new system in which to explore quantum state control and subrecoil laser cooling

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S. E. Hamann, D. L. Haycock, G. Klose, P. H. Pax, I. H. Deutsch, P. S. Jessen. 1998-01-13. Resolved-sideband Raman cooling to the ground state of an optical lattice. https://doi.org/10.1103/physrevlett.80.4149

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