Extended Data Fig. 6: Power dependence of the microwave transmission of the odd modes of the Bloch array.
From: Evidence of dual Shapiro steps in a Josephson junction array

Power sweep of the odd modes identified in the Bloch array, ranging from (a) at 3.2 GHz to (f) at 7.5 GHz. For each plot we observe the same power-dependent behavior, analogue to the one of Fig. 4b (see the main text for more details). These measurements are used to find the correct power to obtain the locking, and thus the steps. Such power is signaled with a dashed grey line for the modes where it could be identified, and the resulting current plateaux are shown in Fig. 5c.