Universal response curve for nanowire superconducting single-photon detectors
Universal response curve for nanowire superconducting single-photon detectors
Using detector tomography, we investigate the detection mechanism in NbN-based superconducting single photon detectors (SSPDs). We demonstrate that the detection probability uniquely depends on a particular linear combination of bias current and energy, for a large variation of bias currents, input energies and detection probabilities, producing a universal detection curve. …