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\bibitem{Kahl_etal2015} Kahl, O., Ferrari, S., Kovalyuk, V., Goltsman, G. N., Korneev, A., \& Pernice, W. H. P. (2015). Waveguide integrated superconducting single-photon detectors with high internal quantum efficiency at telecom wavelengths. \textit{Sci. Rep.}, \textit{5}, 10941 (1 to 11).

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