Programmable Real-Time Magnon Interference in Two Remotely Coupled Magnonic Resonators

TL;DR

This paper demonstrates programmable, real-time magnon interference between two remotely coupled yttrium iron garnet spheres, enabling coherent control of magnon dynamics for potential use in hybrid magnonic networks.

Contribution

It introduces a method for programmable, real-time magnon interference in remotely coupled resonators, advancing coherent control in magnonic systems.

Findings

Nearly perfect constructive and destructive interference achieved.

Coherent energy exchange demonstrated between remote magnonic resonators.

Programmable magnon interference enables arbitrary coupled magnon oscillation states.

Abstract

Magnon interference is a signature of coherent magnon interactions for coherent information processing. In this work, we demonstrate programmable real-time magnon interference, with examples of nearly perfect constructive and destructive interference, between two remotely coupled yttrium iron garnet spheres mediated by a coplanar superconducting resonator. Exciting one of the coupled resonators by injecting single- and double-microwave pulse leads to the coherent energy exchange between the remote magnonic resonators and allows us to realize a programmable magnon interference that can define an arbitrary state of coupled magnon oscillation. The demonstration of time-domain coherent control of remotely coupled magnon dynamics offers new avenues for advancing coherent information processing with circuit-integrated hybrid magnonic networks.