All-optical sub-Kelvin sympathetic cooling of a levitated microsphere in vacuum

Abstract

We demonstrate all-optical sympathetic cooling of a laser-trapped microsphere to sub-Kelvin temperatures, mediate by optical binding to a feedback-cooled adjacent particle. Our study opens prospects for multi-particle quantum entanglement and sensing in levitated optomechanics.

3 pages, 2 figures

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• Rotational Quantum Friction
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