Supplement 1: Spectrally multiplexed single-photon detection with hybrid superconducting nanophotonic circuits
Oliver Kahl, Simone Ferrari, Vadim V. Kovalyuk, Andreas Vetter, Georgia Lewes‐Malandrakis, Christoph Erwin Nebel, Alexander A. Korneev, Gregory N Gol'tsman, Wolfram Pernice