Quantum nondemolition measurement of optical field fluctuations by optomechanical interaction

Journal article (2018)

Authors

A. Pontin Istituto Nazionale di Fisica Nucleare - Sezione di Firenze, University of Florence, University College London
M. Bonaldi Fondazione Bruno Kessler, Trento Institute for Fundamental Physics and Application
Antonio Borrielli Trento Institute for Fundamental Physics and Application, Fondazione Bruno Kessler
L. Marconi CNR-INO
F. Marino CNR-INO, Istituto Nazionale di Fisica Nucleare - Sezione di Firenze
G. Pandraud Else Kooi Laboratory , EKL Processing - EEMCS
G.A. Prodi Trento Institute for Fundamental Physics and Application, Università di Trento
Pasqualina M Sarro Else Kooi Laboratory , Electronic Components, Technology and Materials - EEMCS
E. Serra Electronic Components, Technology and Materials - EEMCS , Else Kooi Laboratory , Trento Institute for Fundamental Physics and Application
F. Marin University of Florence, Istituto Nazionale di Fisica Nucleare - Sezione di Firenze, European Laboratory for Non-linear Spectroscopy (LENS), CNR-INO
Department
Else Kooi Laboratory
Copyright: © 2018 A. Pontin, M. Bonaldi, A. Borrielli, L. Marconi, F. Marino, G. Pandraud, G.A. Prodi, Pasqualina M Sarro, E. Serra, F. Marin
DOI: https://doi.org/10.1103/PhysRevA.97.033833
More Info
expand_more

Published Date

2018

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Department

Else Kooi Laboratory

Abstract

According to quantum mechanics, if we keep observing a continuous variable we generally disturb its evolution. For a class of observables, however, it is possible to implement a so-called quantum nondemolition measurement: by confining the perturbation to the conjugate variable, the observable is estimated with arbitrary accuracy, or prepared in a well-known state. For instance, when the light bounces on a movable mirror, its intensity is not perturbed (the effect is just seen on the phase of the radiation), but the radiation pressure allows one to trace back its fluctuations by observing the mirror motion. In this work, we implement a cavity optomechanical experiment based on an oscillating micromirror, and we measure correlations between the output light intensity fluctuations and the mirror motion. We demonstrate that the uncertainty of the former is reduced below the shot-noise level determined by the corpuscular nature of light.

Files

44903297_PhysRevA.97.033833.pd... (pdf)
(pdf | 2.88 Mb)
Unknown license