A multiplexed single electron transistor for application in scalable solid-state quantum computing

TL;DR

This paper proposes a multiplexed single electron transistor that can serve as both a read-out device and a control gate for solid-state qubits, potentially reducing gate density in scalable quantum computers.

Contribution

It introduces a multiplexed SET design that combines read-out and control functionalities, advancing scalable solid-state quantum computing architectures.

Findings

Multiplexed SET can function as both read-out and control device.

Potential to reduce overall gate density in quantum architectures.

Enhances scalability of solid-state quantum computers.

Abstract

Single Electron Transistors (SETs) are nanoscale electrometers of unprecedented sensitivity, and as such have been proposed as read-out devices in a number of quantum computer architectures. We show that the functionality of a standard SET can be multiplexed so as to operate as both read-out device and control gate for a solid-state qubit. Multiplexing in this way may be critical in lowering overall gate densities in scalable quantum computer architectures.