Four single-spin Rabi oscillations in a quadruple quantum dot

TL;DR

This paper demonstrates the coherent control of four individual electron spins in a quadruple quantum dot system, showcasing Rabi oscillations and ESR, advancing scalable quantum computing with multiple qubits.

Contribution

It presents the first demonstration of single-spin control in a quadruple quantum dot system, enabling scalable quantum manipulation.

Findings

Observed Rabi oscillations and ESR in four quantum dots

Evaluated spin-electric coupling for each dot

Discussed methods for independent spin control in larger systems

Abstract

Scaling up qubits is a necessary step to realize useful systems of quantum computation. Here we demonstrate coherent manipulations of four individual electron spins using a micro-magnet method in a quadruple quantum dot - the largest number of dots used for the single spin control in multiple quantum dots. We observe Rabi oscillations and electron spin resonance (ESR) for each dot and evaluate the spin-electric coupling of the four dots, and finally discuss practical approaches to independently address single spin control in multiple quantum dot systems containing even more quantum dots.