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Magnon-Magnon Interaction Induced by Nonlinear Spin-Wave Dynamics
Matteo Arfini1, Alvaro Bermejillo-Seco1, Artem Bondarenko1
1Delft University of Technology, Kavli Institute of Nanoscience, Lorentzweg 1, 2628 CJ Delft, Netherlands.
Physical Review Letters
|October 31, 2025
Summary
Nonlinear spin-wave dynamics create resonant interactions between magnon modes in yttrium iron garnet disks. This spectral splitting phenomenon, driven by strong pumping, opens new avenues for quantum computation.
Area of Science:
- Condensed Matter Physics
- Quantum Information Science
Background:
- Nonlinear dynamics in magnetic materials are crucial for advanced technologies.
- Understanding magnon-exciton interactions is key to developing novel computing paradigms.
Purpose of the Study:
- To investigate the induction of resonant interactions between nonresonant magnon modes using nonlinear spin-wave dynamics.
- To explore the potential of these interactions for future quantum computation platforms.
Main Methods:
- Experimental demonstration of nonlinear spin-wave dynamics in yttrium iron garnet disks.
- Theoretical modeling using a linearized magnon three-wave mixing Hamiltonian.
- Analysis of spectral splitting under strong pumping near ferromagnetic resonance.
Main Results:
- Observed spectral splitting of magnon modes with increasing drive amplitude.
- Effective resonant interaction induced between nonresonant magnon modes.
- Theoretical framework accurately captures the observed phenomenon, linking it to parametric Suhl instabilities.
Conclusions:
- Nonlinear spin-wave dynamics provide a pathway to control magnon interactions.
- The demonstrated effects occur in an unexplored parameter regime, promising for quantum and classical computation.
- This work facilitates the development of experimental platforms for advanced computing protocols.
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