Spectral Analysis of Quantum Field Fluctuations in a Strongly Coupled Optomechanical System
Year: 2023
Authors: Ranfagni A., Marino F., Marin F.
Autors Affiliation: Univ Firenze, Dipartimento Fis & Astron, Via Sansone 1, I-50019 Sesto Fiorentino, FI, Italy; European Lab Nonlinear Spect LENS, Via Carrara 1, I-50019 Sesto Fiorentino, FI, Italy; INFN, Sez Firenze, Via Sansone 1, I-50019 Sesto Fiorentino, FI, Italy; CNR INO, Largo Enr Fermi 6, I-50125 Florence, Italy.
Abstract: With a levitodynamics experiment in the strong and coherent quantum optomechanical coupling regime, we demonstrate that the oscillator acts as a broadband quantum spectrum analyzer. The asymmetry between positive and negative frequency branches in the displacement spectrum traces out the spectral features of the quantum fluctuations in the cavity field, which are thus explored over a wide spectral range. Moreover, in our two-dimensional mechanical system the quantum backaction, generated by such vacuum fluctuations, is strongly suppressed in a narrow spectral region due to a destructive interference in the overall susceptibility.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 130 (19) Pages from: 193601-1 to: 193601-6
More Information: We acknowledge financial support from: PNRR MUR Project No. PE0000023-NQSTI.KeyWords: Quantum optomechanics; Levitated nanoparticles. DOI: 10.1103/PhysRevLett.130.193601ImpactFactor: 8.100Citations: 1data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-06References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here