Quantum motion of a squeezed mechanical oscillator attained via an optomechanical experiment

P. Vezio, A. Chowdhury, M. Bonaldi, Antonio Borrielli, F. Marino, B. Morana, G.A. Prodi, P.M. Sarro, E. Serra, F. Marin

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

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.

Original languageEnglish
Article number053505
Pages (from-to)053505-1 - 053505-10
Number of pages10
JournalPhysical Review A
Volume102
Issue number5
DOIs
Publication statusPublished - 2020

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