Hyperentangled photon pairs emitted from an integrated source delivering more than 1 Gpair/s
Linda Gianini, Andrea Barone, Marcello Bacchi, Jonathan Faugier-Tovar, Sara Congia, Massimo Borghi, Noemi Tagliavacche, Luca Zatti, Quentin Wilmart, S. Olivier, Marco Liscidini, Mattéo Galli, Daniele Bajoni · 2024
We demonstrate a high-rate source of hyperentangled photons based on a silicon racetrack resonator. Hyperentanglement is verified by violating Bell’s inequality in both time and frequency domains, and obtaining a high-purity state using frequency-bin encoding.