We present a theoretical model of multimode quantum correlations in bright frequency combs generated in continuous-wave regime by microresonators above threshold. Our analysis shows how these correlations emerge from cascading four-wave mixing processes fed by the input pump as well as the generated bright beams. Logarithmic negativity criterion is employed to quantify entanglement between partitions of modes, demonstrating the transition from a bipartite regime just above the oscillation threshold to the multipartite one at higher input pump powers. Due to its generality, our model can be safely used to describe other kinds of non-linear χ (3) cavities.
@article{arxiv.2310.01855,
title = {Multipartite Entanglement in Bright Frequency Combs from Microresonators},
author = {Adrien Bensemhoun and C Gonzalez-Arciniegas and Olivier Pfister and Laurent Labont and Jean Etesse and Anthony Martin and Sbastien Tanzilli and Giuseppe Patera and Virginia d'Auria},
journal= {arXiv preprint arXiv:2310.01855},
year = {2023}
}