Super spontaneous four-wave mixing in an array of silicon microresonators

• URL: http://arxiv.org/abs/2209.12641v1
• Date: Mon, 26 Sep 2022 12:43:57 GMT
• Title: Super spontaneous four-wave mixing in an array of silicon microresonators
• Authors: Massimo Borghi, Federico Andrea Sabattoli, Houssein El Dirani, Laurene Youssef, Camille Petit-Etienne, Erwine Pargon, J.E. Sipe, Amideddin Mataji-Kojouri, Marco Liscidini, Corrado Sciancalepore, Matteo Galli, and Daniele Bajoni
• Abstract summary: We report experimental evidence of super spontaneous four-wave mixing (super SFWM) We study this phenomenon in an array of microring resonators on a silicon photonic chip coupled to bus waveguides.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Composite optical systems can show compelling collective dynamics. For instance, the cooperative decay of quantum emitters into a common radiation mode can lead to superradiance, where the emission rate of the ensemble is larger than the sum of the rates of the individual emitters. Here, we report experimental evidence of super spontaneous four-wave mixing (super SFWM), an analogous effect for the generation of photon pairs in a parametric nonlinear process on an integrated photonic device. We study this phenomenon in an array of microring resonators on a silicon photonic chip coupled to bus waveguides. We measured a cooperative pair generation rate that always exceeds the incoherent sum of the rates of the individual resonators. We investigate the physical mechanisms underlying this collective behaviour, clarify the impact of loss, and address the aspects of fundamental and technological relevance of our results.

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