All-electrical universal control of a double quantum dot qubit in silicon MOS

TL;DR

This paper demonstrates a fully electrical control method for a silicon-based double quantum dot spin qubit, enabling integration with CMOS technology without external magnetic components.

Contribution

It introduces an all-electrical control scheme for silicon double quantum dot qubits, eliminating the need for external micromagnets and compatible with standard CMOS fabrication.

Findings

Achieved universal control of the qubit using spin-orbit-like and exchange interactions.

Demonstrated both DC and AC single-shot readout techniques.

Control and readout are compatible with CMOS fabrication processes.

Abstract

Qubits based on transistor-like Si MOS nanodevices are promising for quantum computing. In this work, we demonstrate a double quantum dot spin qubit that is all-electrically controlled without the need for any external components, like micromagnets, that could complicate integration. Universal control of the qubit is achieved through spin-orbit-like and exchange interactions. Using single shot readout, we show both DC- and AC-control techniques. The fabrication technology used is completely compatible with CMOS.