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arXiv · 1106.3614

Laser cooling of a nanomechanical oscillator into its quantum ground state

Jasper Chan·T. P. Mayer Alegre·Amir H. Safavi-Naeini·Jeff T. Hill·Alex Krause·Simon Groeblacher·Markus Aspelmeyer·Oskar Painter
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Abstract

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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Jasper Chan, T. P. Mayer Alegre, Amir H. Safavi-Naeini, Jeff T. Hill, Alex Krause, Simon Groeblacher, Markus Aspelmeyer, Oskar Painter. 2011-06-18. Laser cooling of a nanomechanical oscillator into its quantum ground state. https://doi.org/10.1038/nature10461

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