Device Architecture for Coupling Spin Qubits via an Intermediate Quantum State

Xanthe Croot, Sebastian Pauka, John Watson, Geoffrey C. Gardner, Saeed Fallahi, Michael J. Manfra, D. J. Reilly

Abstract

Electron spins confined to quantum dots are currently of interest as a scalable platform for constructing a quantum computer, although here implementing a fast, high-fidelity gate to entangle qubits remains a challenge. The authors demonstrate a device architecture that enables coupling of qubits via a mediating quantum state, realized using a many-electron quantum dot. This platform potentially enables medium-range entangling gates in spin-based qubit architectures, and offers the prospect of scaling spin qubits beyond linear arrays.

Locations

• Physical Review Applied - View - PDF
• arXiv (Cornell University) - View - PDF
• DataCite API - View