In this work, we demonstrate a single-mode squeezed light source in a dual-pumped integrated ring microresonator and map the dependence of the noise quadrature on the pump-laser frequency detuning, achieving $1\mathrm{dB}$ of squeezing at the optimal operating point. We further demonstrate that utilizing a common-pass local-oscillator approach by passing the local oscillator through the same optical amplification stages as the pumps reduces its integrated root-mean-square phase noise to ${1.72}^{\circ }$, enabling minute-scale stable noise measurements.

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• Nonlinear optics
• Photonics
• Quantum states of light
• Squeezing of quantum noise
• Coupled oscillators
• Optical microcavities
• Optical sources & detectors