Ground-state laser cooling beyond the Lamb-Dicke limit
Institut für Theoretische Physik, Universität Innsbruck,
Technikerstrasse 25, A-6020 Innsbruck, Austria
2 CEA/DRECAM/SPAM, Centre d'Etudes de Saclay, 91191 Gif-sur-Yvette Cedex, France
Accepted: 26 May 1997
We propose a laser cooling scheme that allows to cool a single atom confined in a harmonic potential to the trap ground state . The scheme assumes strong confinement, where the oscillation frequency in the trap is larger than the effective spontaneous decay width, but is not restricted to the Lamb-Dicke limit, i.e. the size of the trap ground state can be larger than the optical wavelength. This cooling scheme may be useful in the context of quantum computations with ions and Bose-Einstein condensation.
PACS: 32.80.Pj – Optical cooling of atoms; trapping / 42.50.Vk – Mechanical effects of light on atoms, molecules, electrons, and ions
© EDP Sciences, 1997