{
  "abstract": "Topological interface states in open photonic systems combine spatial localization at domain walls with temporal confinement characterized by a radiative quality factor. Here, we develop a non-Hermitian Dirac formalism for surface-emitting Jackiw-Rebbi states in dielectric metagratings. We show how varying the local amplitude of the lattice perturbation shapes the complex Dirac mass profile, enabling control over the quality factors and far-field radiation patterns of the interface states, while preserving their topological character. Applying this framework to a metagrating with second-order Brillouin-zone folding, we design a spatially graded superlattice perturbation that supports interface states with quality factors exceeding 10$^4$ and Hermite-Gaussian beam emission. These results establish superlattice perturbations as a strategy for topological beam shaping and offer a route toward high-Q topological surface emitters.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.00674",
  "author_total": 3,
  "authors": [
    {
      "name": "Hangkai Fan"
    },
    {
      "name": "Mingzhao Song"
    },
    {
      "name": "Andrey Bogdanov"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3kfkmsxs8e4cb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.00674",
  "fulltext_url": null,
  "id": "3kfkmsxs8e4cb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.00674",
  "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.optics"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.00674",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3kfkmsxs8e4cb.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.00674",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.00674"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Non-Hermitian Theory of Surface Emitting Jackiw-Rebbi States",
  "title_text": "Non-Hermitian Theory of Surface Emitting Jackiw-Rebbi States",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/3kfkmsxs8e4cb",
  "venue": "arXiv",
  "versions": []
}