Enhancing Sideband Cooling by Feedback-Controlled Light

Journal article (2017)

Authors

Massimiliano Rossi University of Camerino
Nenad Kralj University of Camerino
Stefano Zippilli Istituto Nazionale di Fisica Nucleare - Sezione di Perugia, University of Camerino
Riccardo Natali University of Camerino, Istituto Nazionale di Fisica Nucleare - Sezione di Perugia
A. Borrielli Fondazione Bruno Kessler
G. Pandraud Else Kooi Laboratory , EKL Processing - EEMCS
E. Serra Electronic Components, Technology and Materials - EEMCS , Trento Institute for Fundamental Physics and Application, Else Kooi Laboratory
Giovanni Di Giuseppe Istituto Nazionale di Fisica Nucleare - Sezione di Perugia, University of Camerino
David Vitali CNR-INO, University of Camerino, Istituto Nazionale di Fisica Nucleare - Sezione di Perugia
Department
Else Kooi Laboratory
Copyright: © 2017 Massimiliano Rossi, Nenad Kralj, Stefano Zippilli, Riccardo Natali, Antonio Borrielli, G. Pandraud, E. Serra, Giovanni Di Giuseppe, David Vitali
DOI: https://doi.org/10.1103/PhysRevLett.119.123603
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Published Date

2017

Language

English

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Department

Else Kooi Laboratory

Abstract

We realize a phase-sensitive closed-loop control scheme to engineer the fluctuations of the pump field which drives an optomechanical system and show that the corresponding cooling dynamics can be significantly improved. In particular, operating in the counterintuitive "antisquashing" regime of positive feedback and increased field fluctuations, sideband cooling of a nanomechanical membrane within an optical cavity can be improved by 7.5 dB with respect to the case without feedback. Close to the quantum regime of reduced thermal noise, such feedback-controlled light would allow going well below the quantum backaction cooling limit.

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