Laser cooling of a nanomechanical oscillator into its quantum ground state

Details Laser cooling of a nanomechanical oscillator into its quantum ground state Laser cooling of a nanomechanical oscillator into its quantum ground state

2011-06-18

arxiv.org/abs/1106.3614v1

Nature 478, 89-92 (06 October 2011)

Physics

Quantum Physics

18 pages, 10 figures

Scientific paper

10.1038/nature10461

A patterned Si nanobeam is formed which supports co-localized acoustic and optical resonances that are coupled via radiation pressure. Starting from a bath temperature of T=20K, the 3.68GHz nanomechanical mode is cooled into its quantum mechanical ground state utilizing optical radiation pressure. The mechanical mode displacement fluctuations, imprinted on the transmitted cooling laser beam, indicate that a final phonon mode occupancy of 0.85 +-0.04 is obtained.

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