Fig. 2: Attosecond current switching.
a Cross-correlation current measurement setup. The pump laser beam splits into two beams by beam splitter. The two beam are focused into the transistor and generate current signals. The delay between these two generated signals is controlled by a delay stage implemented in one of the beam paths. b Instantaneous field-induced current (IE) (average of three measurements), shown as black dots connected by red line. The error bars present the calculated standard deviation error of three scans. The calculated current is plotted in dashed black line. c Absolute IE measured signal modulation in time, obtained from (b), is plotted in diamond shape points connected with black line. The inset in (c) (a zoom in delay ranges from −1.5 to 1.5 fs) shows the switching of the current ON and OFF with a periodicity of 630 as.
