Fig. 4
From: Establishing an end-to-end workflow for SNSPD fabrication and characterization
Schematics of the two methods used for SDE calibration with (a) a classical attenuated coherent light source and (b) a quantum correlated-photon-pair source. (c) System detection efficiency and dark count rate obtained with the two different methods as a function of SNSPD biasing current; the dash line indicates the 9.8 μA bias current at which the device performance was assessed.
