Comparing cavity and ordinary laser cooling within the Lamb-Dicke regime

Details Comparing cavity and ordinary laser cooling within the Lamb-Dicke regime Comparing cavity and ordinary laser cooling within the Lamb-Dicke regime

2010-06-15

arxiv.org/abs/1006.3008v3

J. Mod. Opt. 58:1317,2011

Physics

Quantum Physics

12 pages, 8 figures, final version accepted for publication

Scientific paper

Cavity-mediated cooling has the potential to become one of the most efficient techniques to cool molecular species down to very low temperatures. In this paper we analyse cavity cooling with single-laser driving for relatively large cavity decay rates kappa and relatively large phonon frequencies nu. It is shown that cavity cooling and ordinary laser cooling are essentially the same within the validity range of the Lamb-Dicke approximation. This is done by deriving a closed set of rate equations and calculating the corresponding stationary state phonon number and cooling rate. For example, when nu is either much larger or much smaller than kappa, the minimum stationary state phonon number scales as kappa^2/16 nu^2 (strong confinement regime) and as kappa / 4 nu (weak confinement regime), respectively.

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