A magnonic directional coupler for integrated magnonic half-adders
Abstract
Magnons, the quanta of spin waves, could be used to encode information in beyond-Moore computing applications, and magnonic device components, including logic gates, transistors, and units for non-Boolean computing, have already been developed. Magnonic directional couplers, which can function as circuit building blocks, have also been explored, but have been impractical because of their millimetre dimensions and multi-mode spectra. Here, we report a magnonic directional coupler based on yttrium iron garnet single-mode waveguides of 350 nm width. We use the amplitude of a spin-wave to encode information and to guide it to one of the two outputs of the coupler depending on the signal magnitude, frequency, and the applied magnetic field. Using micromagnetic simulations, we also propose an integrated magnonic half-adder that consists of two directional couplers and processes all information within the magnon domain with aJ energy consumption.
Keywords
Cite
@article{arxiv.1905.12353,
title = {A magnonic directional coupler for integrated magnonic half-adders},
author = {Q. Wang and M. Kewenig and M. Schneider and R. Verba and F. Kohl and B. Heinz and M. Geilen and M. Mohseni and B. Lägel and F. Ciubotaru and C. Adelmann and C. Dubs and S. D. Cotofana and O. V. Dobrovolskiy and T. Brächer and P. Pirro and A. V. Chumak},
journal= {arXiv preprint arXiv:1905.12353},
year = {2021}
}
Comments
26 pages, 10 figures. arXiv admin note: text overlap with arXiv:1902.02855