Teufel, J.
, Lecocq, F.
and Simmonds, R.
(2015),
Overwhelming thermomechanical motion with microwave radiation pressure shot noise, Physical Review Letters
(Accessed December 16, 2025)
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Overwhelming thermomechanical motion with microwave radiation pressure shot noise
Published
Author(s)
, ,
Abstract
We measure the fundamental noise processes associated with a continuous linear position measurement of a micromechanical membrane incorporated in a microwave cavity optomechanical circuit. We observe the trade-o ff between the two fundamental sources of noises that enforce the standard quantum limit: the measurement imprecision and radiation-pressure backaction from photon shot noise. We demonstrate that the quantum backaction of the measurement can overwhelm the intrinsic thermal motion by 24 dB, entering a new regime for cavity optomechanical systems.Citation
Physical Review Letters
Pub Type
Journals
Keywords
nanomechanics, quantum measurement, standard quantum limit, superconductivity
Citation
Issues
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Created August 21, 2015, Updated February 19, 2017