Sub-kelvin optical cooling of a micromechanical resonator

Dustin Kleckner () and Dirk Bouwmeester
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Dustin Kleckner: University of California
Dirk Bouwmeester: University of California

Nature, 2006, vol. 444, issue 7115, 75-78

Abstract: It's all done with mirrors Cooling of mechanical resonators is the focus of much research effort because of possible applications in ultra-high precision measurements such as gravitational wave detection. It is also of fundamental interest as using this technique it may be possible to observe a transition between classical and quantum behaviour of a mechanical system. Three groups report advances in this area. Gigan et al. and Arcizet et al. used radiation pressure to freeze out thermal vibrations of tiny mechanical microresonators, or micromirrors. In the right conditions, the mirrors cool from room temperature to about 10 K without outside influence. Once the technique is refined it should be possible to achieve further cooling and to observe the quantum ground state of a micromirror experimentally. In the third paper, Dustin Kleckner and Dirk Bouwmeester use optical feedback to cool a micromirror to sub-kelvin temperatures.

Date: 2006
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DOI: 10.1038/nature05231

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