# A waveguide cavity resonator source of squeezing

## TL;DR

This paper demonstrates a waveguide cavity resonator made of lithium niobate that produces continuous-wave optical squeezing, achieving nearly 3 dB of measured squeezing and highlighting its potential for integrated quantum photonics.

## Contribution

It introduces a lithium niobate waveguide resonator as a new platform for generating continuous-wave optical squeezing, advancing integrated quantum optics technology.

## Key findings

- Achieved 2.9±0.1 dB of measured squeezing.
- Produced 4.9±0.1 dB of squeezing after losses.
- Showcases the potential for integrated continuous-wave quantum devices.

## Abstract

We present the generation of continuous-wave optical squeezing from a titanium-indiffused lithium niobate waveguide resonator. We directly measure 2.9\pm 0.1 dB of single-mode squeezing, which equates to a produced level of 4.9\pm 0.1 dB after accounting for detection losses. This device showcases the current capabilities of this waveguide architecture and precipitates more complicated integrated continuous-wave quantum devices in the continuous-variable regime.