Soliton transistor

Abstract

An all soliton transistor is introduced which uses a train of soliton-like vortices inside long Josephson junctions to turn off the movement of another train of vortices. In our practical realization, a long Josephson junction injects vortices into a reverse-biased Josephson fluxonic diode, corresponding to the ON state of the transistor. Injecting antivortices through a third long junction annihilates vortices before they could reach the Josephson fluxonic diode. This corresponds to the OFF state. Experimental results on the successful operation of this transistor as a NOT gate are provided. © 2005 American Institute of Physics.