Frequency modulation on magnons in synthetic dimensions

Meng Xu, Chensong Hua, Yan Chen () and Weichao Yu ()
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Meng Xu: Fudan University
Chensong Hua: Fudan University
Yan Chen: Fudan University
Weichao Yu: Fudan University

Nature Communications, 2025, vol. 16, issue 1, 1-7

Abstract: Abstract Magnons are promising candidates for next-generation computing architectures, offering the ability to manipulate their amplitude and phase for information encoding. However, the frequency degree of freedom remains largely unexploited due to the complexity of nonlinear process. In this work, we introduce the concept of synthetic frequency dimension into magnonics, treating the eigenfrequency of inherent modes as an additional degree of freedom. This approach enables the effective description of the temporal evolution of a magnon state using an effective tight-binding model, analogous to a charged particle hopping in a modulated lattice. A magnonic ring resonator is investigated as an example, and several intriguing phenomena are predicted, including Bloch oscillations and a leverage effect during unidirectional frequency shifts, all of which are verified through micromagnetic simulations. Notably, our strategy operates in the linear spin-wave regime, excluding the involvement of multi-magnon scattering and high-power generation. This work expands the toolkit for designing magnonic devices based on frequency modulation and paves the way for a new paradigm called magnonics in synthetic dimensions.

Date: 2025
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DOI: 10.1038/s41467-025-58582-z

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