Strong spin-magnon coupling in a van der Waals magnet with tunable chiral symmetry
Fuente:
arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
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| _version_ | 1866918130167578624 |
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| author | García-Pons, D. Pérez-Bailón, J. Boix-Constant, C. Gómez-Muñoz, I. del Arco, X. Mañas-Valero, S. Coronado, E. Zueco, D. Martínez-Pérez, M. J. |
| author_facet | García-Pons, D. Pérez-Bailón, J. Boix-Constant, C. Gómez-Muñoz, I. del Arco, X. Mañas-Valero, S. Coronado, E. Zueco, D. Martínez-Pérez, M. J. |
| contents | Quantum technologies require platforms that can coherently interface qubits with bosonic excitations. Photons have traditionally played this role in cavity quantum electrodynamics, but achieving the same goal using solid-state bosons remains challenging. Here we demonstrate strong and tunable spin-magnon coupling between molecular spin qubits and magnons in a van der Waals antiferromagnetic insulator. Using [Gd(W$_5$O$_{18}$)$_{2}$]$^{9-}$ as the spin ensemble and CrSBr as the magnonic resonator, we observe anticrossings and coherent hybridization, realizing magnon quantum electrodynamics for the first time. Crucially, by rotating the magnetic field, we can dynamically change the magnon symmetry from linear to chiral, enabling in-situ tuning of the coupling strength. Our results establish magnonic cavities as a platform for scalable chiral quantum optics with magnetic materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_17888 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Strong spin-magnon coupling in a van der Waals magnet with tunable chiral symmetry García-Pons, D. Pérez-Bailón, J. Boix-Constant, C. Gómez-Muñoz, I. del Arco, X. Mañas-Valero, S. Coronado, E. Zueco, D. Martínez-Pérez, M. J. Quantum Physics Mesoscale and Nanoscale Physics Quantum technologies require platforms that can coherently interface qubits with bosonic excitations. Photons have traditionally played this role in cavity quantum electrodynamics, but achieving the same goal using solid-state bosons remains challenging. Here we demonstrate strong and tunable spin-magnon coupling between molecular spin qubits and magnons in a van der Waals antiferromagnetic insulator. Using [Gd(W$_5$O$_{18}$)$_{2}$]$^{9-}$ as the spin ensemble and CrSBr as the magnonic resonator, we observe anticrossings and coherent hybridization, realizing magnon quantum electrodynamics for the first time. Crucially, by rotating the magnetic field, we can dynamically change the magnon symmetry from linear to chiral, enabling in-situ tuning of the coupling strength. Our results establish magnonic cavities as a platform for scalable chiral quantum optics with magnetic materials. |
| title | Strong spin-magnon coupling in a van der Waals magnet with tunable chiral symmetry |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2508.17888 |