Photon Trapping for Increased Efficiency of Cascaded Downconversion
Alexandre Leger, Samridhi Gambhir, Julien Légère, Deny R. Hamel · Conference on Lasers and Electro-Optics · 2022
Cascaded spontaneous parametric downconversion is used to produce entangled photon triplets, although poor efficiency limits rates. As a solution, we propose trapping photons in an active cavity, giving them many chances at downconversion.