Performance and limits of feedback cooling methods for levitated oscillators: a direct comparison
T. W. Penny,
A. Pontin,
P. F. Barker
Abstract:Cooling the centre-of-mass motion is an important tool for levitated optomechanical systems, but it is often not clear which method can practically reach lower temperatures for a particular experiment. We directly compare the parametric and velocity feedback damping methods, which are used extensively for cooling the motion of single trapped particles in a range of traps. By performing experiments on the same particle, and with the same detection system, we demonstrate that velocity damping cools the oscillato… Show more
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