Spectral evolution of two-photon emission in microresonators
Quantum Physics
2026-08-05 v1
Abstract
High-Q silicon nitride microresonators are versatile sources for generating photon pairs via four-wave mixing. We investigate the spectral coherence of this process, tracking the transition from the spontaneous quantum regime to the onset of optical parametric oscillation. By combining time-correlation measurements with phase-sensitive measurements, we continuously monitor the emission linewidth as it evolves from a cavity-lifetime-limited linewidth toward the pump-linewidth scale. This characterization is essential for optimizing integrated sources for scalable quantum networks.
Cite
@article{arxiv.2608.04684,
title = {Spectral evolution of two-photon emission in microresonators},
author = {Francesca Famà and Stefano Dello Russo and Stefano Giaccari and Salvatore Virzì and Lorenzo Lucia and Cecilia Clivati and Chiara Gionco and Mario Siciliani de Cumis and Stefano Condio and Erik Cerrato and Gianluca Bertaina and Alice Meda and Marco Gramegna and Marco Genovese and Filippo Levi and Ivo Pietro Degiovanni and Davide Calonico},
journal= {arXiv preprint arXiv:2608.04684},
year = {2026}
}
Comments
15 pages main text. The file contains also 10pages of supplementary material