Two-way switch for binary decision diagram logic using silicon single-electron transistors

Abstract

A two-way switch for binary decision diagram logic applications has been implemented using silicon single-electron transistors. Each single-electron transistor consists of a silicon nanowire with two in-plane side-gates, fabricated in silicon-on-insulator material. The switch uses three transistors, arranged as bi-directional electron pumps. At 4.2 K, few-electron packets are switched by an input voltage from an entry branch into one of two exit branches. The circuit is driven by a 3 MHz sine wave signal. The switch can be used as the basic building block in few-electron logic circuits designed using binary decision diagram logic.