Coupled-resonator-induced transparency with a squeezed vacuum

TL;DR

This paper reports the first experimental observation of quantum fluctuation spectra in coupled optical cavities with injected squeezed vacuum, demonstrating coupled-resonator-induced transparency in the quantum regime through homodyne detection.

Contribution

It introduces the first experimental demonstration of quantum fluctuation spectra in coupled cavities with squeezed vacuum, revealing quantum regime transparency effects.

Findings

Quantum fluctuation spectra measured in coupled cavities

Observation of coupled-resonator-induced transparency in the quantum regime

Quantum noise line-shape determined by cavity properties

Abstract

We present the first experimental observation of quantum fluctuation spectra in two coupled optical cavities with an injected squeezed vacuum light. The quadrature components of the reflected squeezed vacuum spectra are measured by phase sensitive homodyne detector. The experimental results demonstrate coupled-resonator-induced transparency in the quantum regime, in which electromagnetically-induced-transparency-like characteristic of the absorption and dispersion properties of the coupled optical cavities determines the line-shape of the reflected quantum noise spectra.