Preparation and detection of a mechanical resonator near the ground state of motion

T. Rocheleau, T. Ndukum, C. Macklin, J. B. Hertzberg, A. A. Clerk and K. C. Schwab ()
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T. Rocheleau: Cornell University, Ithaca, New York 14853, USA
T. Ndukum: Cornell University, Ithaca, New York 14853, USA
C. Macklin: Cornell University, Ithaca, New York 14853, USA
J. B. Hertzberg: University of Maryland, College Park
A. A. Clerk: McGill University, Montreal, Quebec H3A 2T8, Canada
K. C. Schwab: Applied Physics, Caltech, Pasadena, California 91125, USA

Nature, 2010, vol. 463, issue 7277, 72-75

Abstract: Closer to an exotic goal Placing a macroscopic object in its quantum-mechanical ground state of motion is an exciting experimental prospect. If achieved, it should reveal counter-intuitive physical behaviour — such as the existence of the system in two locations simultaneously. Rocheleau et al. come tantalizingly close to this goal. They have cooled a nanomechanical resonator to a point where the probability of it residing in its motional ground state is 0.21 (which in itself should be sufficient to enable direct measurement of some anticipated quantum phenomena), and have identified the experimental hurdles that need to be overcome to push the system more fully into this exotic quantum regime.

Date: 2010
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DOI: 10.1038/nature08681

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