Quantum motion of a squeezed mechanical oscillator attained via an optomechanical experiment
Authors: Vezio P., Chowdhury A., Bonaldi M., Borrielli A., Marino F., Morana B., Prodi G. A., Sarro P. M., Serra E., Marin F.
Autors Affiliation: European Laboratory for Non-linear Spectroscopy (LENS), Via Carrara 1, I-50019 Sesto Fiorentino (FI), Italy; CNR-INO, Largo Enrico Fermi 6, I-50125 Firenze, Italy; Institute of Materials for Electronics and Magnetism, Nanoscience-Trento-FBK Division, 38123 Povo, Trento, Italy; Istituto Nazionale di Fisica Nucleare (INFN), Trento Institute for Fundamental Physics and Application, I-38123 Povo, Trento, Italy; INFN, Sezione di Firenze, Via Sansone 1, I-50019, Sesto Fiorentino (FI), Italy; Department of Microelectronics and Computer Engineering /ECTM/DIMES, Delft University of Technology, Feldmanweg 17, 2628 CT Delft, The Netherlands; Dipartimento di Matematica, Università di Trento, I-38123 Povo, Trento, Italy; Dipartimento di Fisica e Astronomia, Università di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy.
Abstract: We experimentally investigate a mechanical squeezed state realized in a parametrically modulated membrane resonator embedded in an optical cavity. We demonstrate that a quantum characteristic of the squeezed dynamics can be revealed and quantified even in a moderately warm oscillator, through the analysis of motional sidebands. We provide a theoretical framework for quantitatively interpreting the observations and present an extended comparison with the experiment. A notable result is that the spectral shape of each motional sideband provides a clear signature of a quantum mechanical squeezed state without the necessity of absolute calibrations, in particular in the regime where residual fluctuations in the squeezed quadrature are reduced below the zero-point level.
Journal/Review: PHYSICAL REVIEW A
Volume: 102 (5) Pages from: 053505-1 to: 053505-10
KeyWords: Cavity Optomechanics, Quantum OpticsDOI: 10.1103/PhysRevA.102.053505Citations: 1data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-03-07References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here