Scalable squeezed light source for continuous variable quantum sampling

TL;DR

This paper introduces a scalable, integrated microresonator-based squeezed light source capable of generating high-quality squeezed states suitable for continuous variable quantum sampling, with high repetition rates and significant squeezing levels.

Contribution

It presents a novel approach using effective $$ interactions in microresonators, compatible with nanophotonic fabrication, enabling high photon number squeezing at high repetition rates.

Findings

Squeezed states with mean photon number >10 can be generated.

Over 15dB of squeezing achievable with existing platforms.

Repetition rates exceeding 100MHz are feasible.

Abstract

We propose a novel squeezed light source capable of meeting the stringent requirements of continuous variable quantum sampling. Using the effective $\chi_2$ interaction induced by a strong driving beam in the presence of the $\chi_3$ response in an integrated microresonator, our device is compatible with established nanophotonic fabrication platforms. With typical realistic parameters, squeezed states with a mean photon number of 10 or higher can be generated in a single consistent temporal mode at repetition rates in excess of 100MHz. Over 15dB of squeezing is achievable in existing ultra-low loss platforms.