High-efficiency WSi superconducting nanowire single-photon detectors operating at 2.5 K
High-efficiency WSi superconducting nanowire single-photon detectors operating at 2.5 K
We investigate the operation of WSi superconducting nanowire single-photon detectors (SNSPDs) at 2.5 K, a temperature which is ∼70% of the superconducting transition temperature (TC) of 3.4 K. We demonstrate saturation of the system detection efficiency at 78 ± 2% at a wavelength of 1310 nm, with a jitter of …