Designing a compact cavity-enhanced source of entangled photons

• URL: http://arxiv.org/abs/2408.16666v1
• Date: Thu, 29 Aug 2024 16:11:09 GMT
• Title: Designing a compact cavity-enhanced source of entangled photons
• Authors: Žiga Pušavec, Lara Ulčakar, Rainer Kaltenbaek,
• Abstract summary: Quantum repeaters will require sources of entanglement allowing efficient coupling to quantum memories. Here, we address this challenge with a compact, narrowband source design. The entangled pairs are generated via SPDC in two perpendicularly oriented nonlinear crystals in a Fabry-P'erot cavity.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum repeaters will require sources of entanglement allowing efficient coupling to quantum memories. Here, we address this challenge with a compact, narrowband source design. The entangled pairs are generated via SPDC in two perpendicularly oriented nonlinear crystals in a Fabry-P\'e{}rot cavity. We show that the case of highly non-degenerate wavelengths and type-II phase matching is the most promising candidate for a practical implementation. Using the parameters of an experiment we are currently working on, this design should allow generating entangled photons with a bandwidth of a few MHz.

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