Fig. 3: Frequency response of the MZI under sinusoidal drive.
From: Electronic interferometry with ultrashort plasmonic pulses

a, c AB oscillations of the current difference I0 − I1 for frequencies ranging from 100 kHz to 6 GHz. Experimental data are vertically offset for clarity. b Amplitude of the AB oscillations IAB versus sinusoidal drive amplitude Vac for frequencies from 100 kHz to 100 MHz. The thick gray line indicates the adiabatic limit calculated from the DC raw data using Eq. 1. d Same as (b) for frequencies ranging from 250 MHz to 6 GHz. The adiabatic limit (thick gray line) is shown for comparison. e Evolution of the relative amplitude change ΔIAB with frequency calculated using Eq. (2). The dashed line serves as a guide to the eye. Below 1 GHz, ΔIAB remains small, indicating adiabatic behavior. Above 1 GHz, ΔIAB deviates from the adiabatic limit, marking the transition to the non-adiabatic regime.