{
  "abstract": "Cavity and waveguide magnonics have recently emerged as frontiers for investigating light-matter interactions. In these systems, coupling magnons into meticulously engineered photonic lattices with rich band structures provides a promising platform for tailoring magnon-photon interactions. However, how these hybrid interactions behave in the bandgaps of photonic lattices---specifically, the formation of magnon-photon bound states (MPBSs)---remains largely unaddressed. Crucially, these bound states arise through a mechanism that is fundamentally distinct from bound states in the continuum (BICs). Here, we experimentally demonstrate intra-bandgap bound-state magnonics by coupling yttrium iron garnet (YIG) spheres to a microwave photonic crystal waveguide. At room temperature, we observe MPBSs featuring highly tunable spatial localization, power-dependent interaction modulation under microwave pumping, and long-range magnon-magnon interactions mediated by mode overlap. These unique features bridge fundamental insights into intra-bandgap light-matter interactions with practical applications, offering an avenue for scaling up coherent networks and investigating many-body physics through engineered interactions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.25744",
  "author_total": 8,
  "authors": [
    {
      "name": "Chong-Xin Run"
    },
    {
      "name": "Xue-Feng Pan"
    },
    {
      "name": "Bang-Yao Wu"
    },
    {
      "name": "Kai-Min Hsieh"
    },
    {
      "name": "Wei-Min Zhou"
    },
    {
      "name": "Anton Frisk Kockum"
    },
    {
      "name": "Peng-Bo Li"
    },
    {
      "name": "Io-Chun Hoi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/feqjg9g6whjjb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.25744",
  "fulltext_url": null,
  "id": "feqjg9g6whjjb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.25744",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.app-ph"
    ],
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "3107|Mechanical and Optical Resonators"
    ]
  ],
  "openalex": "W7214126814",
  "pdf_url": "https://arxiv.org/pdf/2609.25744",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/feqjg9g6whjjb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:39Z",
      "native_id": "2609.25744",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.25744"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.app-ph",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Intra-bandgap Bound-State Magnonics in a Photonic Crystal Waveguide",
  "title_text": "Intra-bandgap Bound-State Magnonics in a Photonic Crystal Waveguide",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:39Z",
  "url": "https://research.draconitic.com/paper/feqjg9g6whjjb",
  "venue": "arXiv",
  "versions": []
}