title: Cooling and control of a cavity optoelectromechanical system.
abstract: We implement a cavity optoelectromechanical system integrating electrical actuation capabilities of nanoelectromechanical devices with ultrasensitive mechanical transduction achieved via intracavity optomechanical coupling. Electrical gradient forces as large as 0.40 microN are realized, with simultaneous mechanical transduction sensitivity of 1.5x10{-18} m Hz{-1/2} representing a 3 orders of magnitude improvement over any nanoelectromechanical system to date. Optoelectromechanical feedback cooling is demonstrated, exhibiting strong squashing of the in-loop transduction signal. Out-of-loop transduction provides accurate temperature calibration even in the critical paradigm where measurement backaction induces optomechanical correlations.
authors.affiliation: Department of Physics, University of Queensland, St Lucia, Queensland 4072, Australia.
authors.forename: Kwan H
authors.initials: KH
authors.lastname: Lee
authors.forename: Terry G
authors.initials: TG
authors.lastname: McRae
authors.forename: Glen I
authors.initials: GI
authors.lastname: Harris
authors.forename: Joachim
authors.initials: J
authors.lastname: Knittel
authors.forename: Warwick P
authors.initials: WP
authors.lastname: Bowen