Print Email Facebook Twitter Enhancing Sideband Cooling by Feedback-Controlled Light Title Enhancing Sideband Cooling by Feedback-Controlled Light Author Rossi, Massimiliano (University of Camerino) Kralj, Nenad (University of Camerino) Zippilli, Stefano (University of Camerino; Istituto Nazionale di Fisica Nucleare - Sezione di Perugia) Natali, Riccardo (University of Camerino; Istituto Nazionale di Fisica Nucleare - Sezione di Perugia) Borrielli, Antonio (Fondazione Bruno Kessler) Pandraud, G. (TU Delft Else Kooi Laboratory; TU Delft EKL Processing) Serra, E. (TU Delft Electronic Components, Technology and Materials; TU Delft Else Kooi Laboratory; Trento Institute for Fundamental Physics and Application) Di Giuseppe, Giovanni (University of Camerino; Istituto Nazionale di Fisica Nucleare - Sezione di Perugia) Vitali, David (University of Camerino; Istituto Nazionale di Fisica Nucleare - Sezione di Perugia; CNR-INO) Department Else Kooi Laboratory Date 2017 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. To reference this document use: http://resolver.tudelft.nl/uuid:b7abab88-426f-43ee-a3b0-eba47dd36ba8 DOI https://doi.org/10.1103/PhysRevLett.119.123603 ISSN 0031-9007 Source Physical Review Letters, 119 (12) Part of collection Institutional Repository Document type journal article Rights © 2017 Massimiliano Rossi, Nenad Kralj, Stefano Zippilli, Riccardo Natali, Antonio Borrielli, G. Pandraud, E. Serra, Giovanni Di Giuseppe, David Vitali Files PDF 44920301_PhysRevLett.119.123603.pdf 1.02 MB Close viewer /islandora/object/uuid:b7abab88-426f-43ee-a3b0-eba47dd36ba8/datastream/OBJ/view