Microphotonic forces from superfluid flow

McAuslan, D. L., Harris, G. I., Baker, C., Sachkou, Y., He, X., Sheridan, E. and Bowen, W. P. (2016) Microphotonic forces from superfluid flow. Physical Review X, 6 2: . doi:10.1103/PhysRevX.6.021012

Author McAuslan, D. L.
Harris, G. I.
Baker, C.
Sachkou, Y.
He, X.
Sheridan, E.
Bowen, W. P.
Title Microphotonic forces from superfluid flow
Journal name Physical Review X   Check publisher's open access policy
ISSN 2160-3308
Publication date 2016-04-29
Year available 2016
Sub-type Article (original research)
DOI 10.1103/PhysRevX.6.021012
Open Access Status DOI
Volume 6
Issue 2
Total pages 7
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Subject 3100 Physics and Astronomy
Abstract In cavity optomechanics, radiation pressure and photothermal forces are widely utilized to cool and control micromechanical motion, with applications ranging from precision sensing and quantum information to fundamental science. Here, we realize an alternative approach to optical forcing based on superfluid flow and evaporation in response to optical heating. We demonstrate optical forcing of the motion of a cryogenic microtoroidal resonator at a level of 1.46 nN, roughly 1 order of magnitude larger than the radiation pressure force. We use this force to feedback cool the motion of a microtoroid mechanical mode to 137 mK. The photoconvective forces we demonstrate here provide a new tool for high bandwidth control of mechanical motion in cryogenic conditions, while the ability to apply forces remotely, combined with the persistence of flow in superfluids, offers the prospect for new applications.
Keyword Helium-II
Mechanical Oscillator
Optical Forces
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID CE110001013
Institutional Status UQ
Additional Notes Article number 021012

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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