Physics & Computer Science
A novel circuit is described which functions as an electronic analog of lumped element transmission line. The circuit requires only operational amplifiers, resistors, and capacitors. This module was coupled to a Josephsonj unction simulator and current voltage characteristics of the combined system were recorded. Steps were observed at voltages determined by the appropriate line resonances. When the transmission line was terminated with loads less than the characteristic impedance, chaos was seen in the lower steps. Similar results were obtained by numerical integration of the corresponding system of differential equations.
Blackburn, James A.; Smith, H.J.T.; and Grønbech-Jensen, Niels, "Resonant Steps in the Characteristics of a Josephson Junction Coupled to a Transmission Line" (1991). Physics and Computer Science Faculty Publications. 43.