Integrating Magnons for Quantum Information

TL;DR

This paper discusses the potential of magnons in quantum information systems, highlighting their unique properties and the challenges in integrating magnetic materials for quantum applications.

Contribution

It provides a perspective on current challenges and future directions for integrating magnons into quantum information technologies.

Findings

Magnons can operate at nanometer scales at microwave frequencies.

Magnons enable coupling to various quantum excitations.

Non-reciprocal dynamics in magnons can be exploited for quantum applications.

Abstract

Magnons, the quanta of collective spin excitations in magnetically ordered materials, have distinct properties that make them uniquely appealing for quantum information applications. They can have ultra-small wavelengths down to the nanometer scale even at microwave frequencies. They can provide coupling to a diverse set of other quantum excitations, and their inherently gyrotropic dynamics forms the basis for pronounced non-reciprocities. In this article we discuss what the current research challenges are for integrating magnetic materials into quantum information systems and provide a perspective on how to address them.