TY - JOUR
T1 - Quantum motion of a squeezed mechanical oscillator attained via an optomechanical experiment
AU - Vezio, P.
AU - Chowdhury, A.
AU - Bonaldi, M.
AU - Borrielli, Antonio
AU - Marino, F.
AU - Morana, B.
AU - Prodi, G.A.
AU - Sarro, P.M.
AU - Serra, E.
AU - Marin, F.
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85096306875&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.102.053505
DO - 10.1103/PhysRevA.102.053505
M3 - Article
AN - SCOPUS:85096306875
VL - 102
SP - 053505-1 - 053505-10
JO - Physical Review A: covering atomic, molecular, and optical physics and quantum information
JF - Physical Review A: covering atomic, molecular, and optical physics and quantum information
SN - 2469-9926
IS - 5
M1 - 053505
ER -