Figure 3
From: Superconducting nanowire single-photon detectors integrated with tantalum pentoxide waveguides
(a) Average of 10 k oscilloscope traces of the electrical response of waveguide-integrated SNSPDs for 90 nm wide nanowires of 10 µm (blue), 30 µm (yellow), 50 µm (red) and 70 µm (green) detector length. Fits to the data are calculated using Eq. (3) (see main text). (b) The suppressed number of squares, which are switching to the normal conducting state, versus kinetic inductance for SNSPDs with different lengths. (c) The internal quantum efficiency (IQE), as calculated by dividing the OCDE (see Fig. 2a) by the absorption efficiency (see main text), versus the calculated suppressed number of squares.
