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Further development of quantum emitter based communication and sensingapplications intrinsically depends on the availability of robust single-photondetectors. Here, we demonstrate a new generation of superconductingsingle-photon detectors specifically optimized for the 500-1100 nm wavelengthrange, which overlaps with the emission spectrum of many interestingsolid-state atom-like systems, such as nitrogen-vacancy and silicon-vacancycenters in diamond. The fabricated detectors have a wide dynamic range (up to350 million counts per second), low dark count rate (down to 0.1 counts persecond), excellent jitter (62 ps), and the possibility of on-chip integrationwith a quantum emitter. In addition to performance characterization, we testedthe detectors in real experimental conditions involving nanodiamondnitrogen-vacancy emitters enhanced by a hyperbolic metamaterial.

Superconducting detector for visible and near-infrared quantum emitters