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Dynamical Backaction of Microwave Fields on a Nanomechanical Oscillator

Teufel, J. D. and Harlow, J. W. and Regal, C. A. and Lehnert, K. W. (2008) Dynamical Backaction of Microwave Fields on a Nanomechanical Oscillator. Physical Review Letters, 101 (19). Art. No. 197203. ISSN 0031-9007. doi:10.1103/PhysRevLett.101.197203.

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We measure the response and thermal motion of a high-Q nanomechanical oscillator coupled to a superconducting microwave cavity in the resolved-sideband regime where the oscillator's resonance frequency exceeds the cavity's linewidth. The coupling between the microwave field and mechanical motion is strong enough for radiation pressure to overwhelm the intrinsic mechanical damping. This radiation-pressure damping cools the fundamental mechanical mode by a factor of 5 below the thermal equilibrium temperature in a dilution refrigerator to a phonon occupancy of 140 quanta.

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Additional Information:© 2008 The American Physical Society. (Received 18 July 2008; published 3 November 2008) The authors acknowledge funding from the National Institute of Standards and Technology (NIST) and from the National Science Foundation. We thank M.A. Castellanos-Beltran and N.E. Flowers-Jacobs for discussions and technical assistance.
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National Institute of Standards and TechnologyUNSPECIFIED
National Science FoundationUNSPECIFIED
Issue or Number:19
Record Number:CaltechAUTHORS:TEUprl08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12324
Deposited By: Archive Administrator
Deposited On:11 Nov 2008 19:19
Last Modified:08 Nov 2021 22:27

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