Mach-Zehnder Interferometer for spin waves: computing applications

TL;DR

This paper introduces a spin wave Mach-Zehnder Interferometer (MZI) for computing, demonstrating its potential to outperform optical and CMOS implementations in certain operational parameters.

Contribution

It presents the design and modeling of a spin wave MZI and its application in a spin wave-based AI computing device, a novel approach in the field.

Findings

Operational parameters are orders of magnitude better than optical counterparts.

Modeling confirms the feasibility and advantages of spin wave MZI.

Demonstrates potential for advanced spin wave-based computing devices.

Abstract

Interferometers are some of the most important optical devices, yet their spin wave based analogues so far received limited attention. In this work we demonstrate how one can design Mach-Zehnder Interferometer (MZI) operating on spin waves, and use to construct a spin wave version of a well known1 MZI based AI computing device. Modeling, performed both micromagnetically and by using a novel, finite difference based method, shows that some of the achievable operational parameters are orders of magnitude superior to both optical and CMOS based implementations.