Towards a quantum interface between telecommunication and UV wavelengths: design and classical performance

AbstractWe propose and characterize a quantum interface between telecommunication wavelengths (1311 nm) and an Yb$${}^{+}$$+-dipole transition (369.5 nm) based on a second-order sum-frequency process in a PPKTP waveguide. An external (internal) conversion efficiency above 5 % (10 %) is shown using classical bright light.

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