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Entangled Photon-Pair Sources based on three-wave mixing in bulk crystals
preprintposted on 2023-11-30, 20:16 authored by Ali Anwar, Chithrabhanu Perumangatt, Fabian Steinlechner, Thomas Jennewein, Alexander Ling
Entangled photon-pairs are a critical resource in quantum communication protocols ranging from quantum key distribution to teleportation. The current workhorse technique for producing photon-pairs is via spontaneous parametric down conversion (SPDC) in bulk nonlinear crystals. The increased prominence of quantum networks has led to growing interest in deployable high performance entangled photon-pair sources. This manuscript provides a review of the state-of-the-art for bulk-optics-based SPDC sources with continuous wave pump, and discusses some of the main considerations when building for deployment.