Fig. 2: Cascade detector based on a linear Nb/NbxSi1−x/Nb array with N = 128 junctions.
From: Cascade switching current detectors based on arrays of Josephson junctions
a Ensemble of the I-V's without irradiation, obtained at slightly different bias currents. The inset shows the array layout. b The array voltage response (blue symbols, left axis) and the number of active junctions, n, (red line, right axis) as a function of microwave power, f = 74.5 GHz, normalized on Pmax ≃ 14 nW. c Array response, V and n, as a function of the polarization angle, Θ, at constant microwave power. The inset shows the polarization loss diagram. The orange line marks the array direction. Profound off-axis lobes manifest the traveling-wave antenna effect.
