Squeezed Vacuum State Propagation and Photon Correlation Metrics in Disordered Optomechanical Resonators

International Journal of Physics | Vol. 14, No. 6, June 2023 | pp. 41–48

DOI: 10.46882/2023/IJP/000158

Research Article

Title: Squeezed Vacuum State Propagation and Photon Correlation Metrics in Disordered Optomechanical Resonators

Names of Authors: A. M. Ross¹, L. K. Rousseau²

Authors’ Affiliations:
¹ Department of Physics, University of Queensland, Brisbane, QLD 4072, Australia
² Laboratoire de Physique des Plasmas, École Polytechnique, Palaiseau, France

Abstract: Processing non-classical states of light within integrated optomechanical circuits is essential for scalable quantum communication networks and high-fidelity quantum transduction. This study models continuous-wave squeezed vacuum state propagation and characterises photon correlation metrics within a linear array of coupled microcavities subjected to spatial fabrication disorder. We solved the quantum stochastic Heisenberg-Langevin equations using an algebraic operator framework that accounts for localized optomechanical coupling variations, cavity mirror losses, and thermal phonon dephasing paths at 4.2 K. Squeezed vacuum states at 1550.0 nm were injected into the boundary port of a 15-channel network. The calculations demonstrate that introducing a minor 4.0% structural disorder in cavity resonance frequencies induces strong spatial localization of light, dropping the input squeezing level from 8.0 dB down to 2.4 dB over a 12.0 ps interaction window. To protect the quantum states, we simulated an active phase-modulation feedback loop that establishes a synthetic gauge field to suppress backscattering. The optimized circuit configuration restored the squeezing level to 6.8 dB, yielding a state fidelity calculation of 94.8% ± 0.3%.

Keywords: Quantum optics; squeezed states; optomechanics; Anderson localization; integrated photonics; phase stabilization

Manuscript Timeline: Received: March 02, 2023; Revised: April 14, 2023; Accepted: May 02, 2023; Published: June 16, 2023

Citation: Ross, A. M., & Rousseau, L. K. (2023). Squeezed Vacuum State Propagation and Photon Correlation Metrics in Disordered Optomechanical Resonators. International Journal of Physics, 14(6), 41–48.

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