Magnetically Tunable Chiral Phonon Polaritons with Magneto-optical Bound States in the Continuum

[2604.12588] Magnetically Tunable Chiral Phonon Polaritons with Magneto-optical Bound States in the Continuum Skip to main content Search Submit Donate Log in Physics > Optics arXiv:2604.12588 (physics) [Submitted on 14 Apr 2026] Title: Magnetically Tunable Chiral Phonon Polaritons with Magneto-optical Bound States in the Continuum Authors: Yu Sun , Jue Li , Wei Li , Bo Li , Qinghua Song , Mengyao Li View PDF Abstract: Chiral phonon-polaritonic states are of interest for handedness-dependent light-matter interactions, yet their realization and magnetic control remain challenging, while direct magneto-optical tunability of phonon-polaritonic media is limited. Here, we propose a hybrid platform in which an hBN phonon polariton couples to a chiral bound state in the continuum supported by a magneto-optical photonic crystal, enabling strong and selective photonic coupling. The interaction gives rise to pronounced mode splitting and the formation of hybrid states, and their modal composition is quantified by phonon-proportion analysis and described by a coupling theory. Importantly, the hybridization can be controlled by magnetic bias through the magneto-optical response of the photonic component, providing control over the modal composition and spectral response. In addition, the hybrid states exhibit handedness-selective absorption under circularly polarized excitation. This work offers a feasible route toward magnetically tunable chiral phonon-polaritonic devices and hybrid polaritonic functionalities Subjects: Optics (physics.optics) ; Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Cite as: arXiv:2604.12588 [physics.optics] (or arXiv:2604.12588v1 [physics.optics] for this version) https://doi.org/10.48550/arXiv.2604.12588 Focus to learn more arXiv-issued DOI via DataCite Related DOI : https://doi.org/10.1021/acsphotonics.6c01054 Focus to learn more DOI(s) linking to related resources Submission history From: Mengyao Li [ view email ] [v1] Tue, 14 Apr 2026 11:10:33 UTC (1,264 KB) Full-text links: Access Paper: View PDF view license Current browse context: physics.optics < prev | next > new | recent | 2026-04 Change to browse by: cond-mat cond-mat.mes-hall physics References & Citations SciX Google Scholar Semantic Scholar export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab) Major funding support from (opens in new tab) (opens in new tab) (opens in new tab)

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