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Observation of Quantum Motion of a Nanomechanical Resonator

Safavi-Naeini, Amir H. and Chan, Jasper and Hill, Jeff T. and Alegre, Thiago P. Mayer and Krause, Alex and Painter, Oskar (2012) Observation of Quantum Motion of a Nanomechanical Resonator. Physical Review Letters, 108 (3). Art. No. 033602. ISSN 0031-9007.

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In this Letter we use resolved sideband laser cooling to cool a mesoscopic mechanical resonator to near its quantum ground state (phonon occupancy 2.6±0.2), and observe the motional sidebands generated on a second probe laser. Asymmetry in the sideband amplitudes provides a direct measure of the displacement noise power associated with quantum zero-point fluctuations of the nanomechanical resonator, and allows for an intrinsic calibration of the phonon occupation number.

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Additional Information:© 2012 American Physical Society. Received 14 September 2011; published 17 January 2012. The authors would like to thank Aash Clerk, Markus Aspelmeyer, and Simon Gröblacher for their valuable input at various stages in this experiment. This work was supported by the DARPA/MTO ORCHID program through a grant from AFOSR, and the Kavli Nanoscience Institute at Caltech. JC and ASN gratefully acknowledge support from NSERC.
Group:Institute for Quantum Information and Matter, IQIM, Kavli Nanoscience Institute
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Caltech Kavli Nanoscience Institute (KNI)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Classification Code:PACS: 42.50.Wk, 42.65.-k, 62.25.-g
Record Number:CaltechAUTHORS:20120214-081028131
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29266
Deposited By: Tony Diaz
Deposited On:29 Feb 2012 20:07
Last Modified:26 Dec 2012 14:50

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