An all-magnonic neuron with tunable fading memory
Abstract
Magnonics offers nanometer-scale wave propagation and strong nonlinearities, making it attractive for neuromorphic applications such as artificial neurons. Yet, magnonic elements with interconnections solely within the magnonic system remain challenging, preventing the realization of interconnected magnonic neurons to date. Here, we experimentally demonstrate an all-magnonic neuron that reacts to magnon inputs with thresholded, amplified magnon firing and subsequent self-reset, enabling all-magnonic operation and cascading. Our approach is based on micro-antenna excitation on an ultra-low damping garnet with perpendicular magnetic anisotropy (PMA), where we exploit the positive magnon frequency shift to realize nonlinear activation. Using Brillouin light scattering spectroscopy, we uncover a transient neuron response with tunable fading memory: A 25% change in pump power results in a 3-order-of-magnitude tuning in memory time, which we harness, demonstrating temporal integration of up to 50 magnon pulses. Finally, we realize neuron triggering in a cascade of 3 neurons, highlighting its potential for connected magnonic circuits.
Keywords
Cite
@article{arxiv.2509.18321,
title = {An all-magnonic neuron with tunable fading memory},
author = {David Breitbach and Moritz Bechberger and Hanadi Mortada and Björn Heinz and Roman Verba and Qi Wang and Carsten Dubs and Mario Carpentieri and Giovanni Finocchio and Davi Rodrigues and Alexandre Abbass Hamadeh and Philipp Pirro},
journal= {arXiv preprint arXiv:2509.18321},
year = {2026}
}
Comments
15 pages, 6 figures