Microwave-to-optical transduction using magnon-exciton coupling in a layered antiferromagnet
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914445186301952 |
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| author | Adak, Pratap Chandra McDaniel, Iris Paul, Suvodeep Heuvel-Horwitz, Caleb Das, Bikash Kozlov, Vitali Mosina, Kseniia Ramanathan, Arun Roy, Xavier Sofer, Zdeněk Zhong, Tian Kamra, Akashdeep Thielens, Arno Alù, Andrea Menon, Vinod M. |
| author_facet | Adak, Pratap Chandra McDaniel, Iris Paul, Suvodeep Heuvel-Horwitz, Caleb Das, Bikash Kozlov, Vitali Mosina, Kseniia Ramanathan, Arun Roy, Xavier Sofer, Zdeněk Zhong, Tian Kamra, Akashdeep Thielens, Arno Alù, Andrea Menon, Vinod M. |
| contents | Coherent interfaces between microwave-frequency quantum systems and low-loss optical links are essential for quantum networks. However, existing microwave-optical transducers often trade conversion efficiency against added noise, bandwidth, and device integrability. Here, we demonstrate coherent microwave-to-optical transduction based on magnon-exciton coupling in the layered antiferromagnet CrSBr. Driving the antiferromagnetic resonance with microwave signals imprints coherent modulation on a reflected optical probe, generating optical sidebands that are resonantly enhanced near excitonic transitions. While prior magnon-based approaches to microwave-to-optical transduction have typically relied on intrinsically weak off-resonant magneto-optical effects (e.g., Faraday rotation), our scheme exploits strong light-matter interactions at exciton resonances. Even in a bulk crystal without cavity enhancement, we observe coherent conversion over an intrinsically broadband window of ~ 300 MHz. We further show that multiple exciton-polariton resonances inherit the magnon-coupled response, suggesting a route to broaden the usable optical detuning range and to mitigate optical dissipation. Our results establish magnon-coupled excitons in layered magnets as a scalable platform for broadband microwave-optical interfaces, with pathways to higher cooperativity via reduced magnetic volume and cavity integration. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2604_03441 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Microwave-to-optical transduction using magnon-exciton coupling in a layered antiferromagnet Adak, Pratap Chandra McDaniel, Iris Paul, Suvodeep Heuvel-Horwitz, Caleb Das, Bikash Kozlov, Vitali Mosina, Kseniia Ramanathan, Arun Roy, Xavier Sofer, Zdeněk Zhong, Tian Kamra, Akashdeep Thielens, Arno Alù, Andrea Menon, Vinod M. Materials Science Mesoscale and Nanoscale Physics Optics Quantum Physics Coherent interfaces between microwave-frequency quantum systems and low-loss optical links are essential for quantum networks. However, existing microwave-optical transducers often trade conversion efficiency against added noise, bandwidth, and device integrability. Here, we demonstrate coherent microwave-to-optical transduction based on magnon-exciton coupling in the layered antiferromagnet CrSBr. Driving the antiferromagnetic resonance with microwave signals imprints coherent modulation on a reflected optical probe, generating optical sidebands that are resonantly enhanced near excitonic transitions. While prior magnon-based approaches to microwave-to-optical transduction have typically relied on intrinsically weak off-resonant magneto-optical effects (e.g., Faraday rotation), our scheme exploits strong light-matter interactions at exciton resonances. Even in a bulk crystal without cavity enhancement, we observe coherent conversion over an intrinsically broadband window of ~ 300 MHz. We further show that multiple exciton-polariton resonances inherit the magnon-coupled response, suggesting a route to broaden the usable optical detuning range and to mitigate optical dissipation. Our results establish magnon-coupled excitons in layered magnets as a scalable platform for broadband microwave-optical interfaces, with pathways to higher cooperativity via reduced magnetic volume and cavity integration. |
| title | Microwave-to-optical transduction using magnon-exciton coupling in a layered antiferromagnet |
| topic | Materials Science Mesoscale and Nanoscale Physics Optics Quantum Physics |
| url | https://arxiv.org/abs/2604.03441 |