{
  "abstract": "Coherent manipulation of photonic interface states requires a control field that matches their internal mode structure. We study this requirement in a two-component Kagome lattice motivated by photon-mediated exchange near a nonlinear nonlocal metasurface. The Dirac spinors show why uniform Raman control cannot couple opposite-spin, same-valley interface modes at leading order, even when their spatial envelopes coincide. A $1:1:-2$ sublattice pattern removes this cancellation and maximizes the projected coupling at fixed root-mean-square amplitude within the diagonal-control class. We test this control scheme through full-zone topology and complete lattice propagation. For a smooth, gapped interface, a $720$-dimensional calculation gives target-mode fidelity $0.999937$ with leakage $6.27\\times10^{-5}$ at RMS drive $0.04t$. Trace-preserving dynamics gives the separate survival condition needed for successful conversion. An exploratory three-dimensional lithium-niobate supercell reproduces the complex addressing pattern with $0.373\\%$ relative error and provides nonlocal exchange, decay and electro-optic frequency-conversion matrices. The mode-resolved control principle thus gives quantitative electromagnetic design targets; the full spin-dependent device realization still requires further calibration.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.18012",
  "author_total": 6,
  "authors": [
    {
      "name": "Ximo Wang"
    },
    {
      "name": "Qiwei Han"
    },
    {
      "name": "Zhenqi Bai"
    },
    {
      "name": "Ruyue Guo"
    },
    {
      "name": "Min Feng"
    },
    {
      "name": "Yichi Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/35sjjsr3h1kqc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.18012",
  "fulltext_url": null,
  "id": "35sjjsr3h1kqc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.18012",
  "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",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Topological Materials and Phenomena"
    ]
  ],
  "openalex": "W7213526370",
  "pdf_url": "https://arxiv.org/pdf/2609.18012",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/35sjjsr3h1kqc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:01Z",
      "native_id": "2609.18012",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.18012"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Sublattice-selective control of spin reversal in metasurface-coupled Kagome interfaces",
  "title_text": "Sublattice-selective control of spin reversal in metasurface-coupled Kagome interfaces",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:01Z",
  "url": "https://research.draconitic.com/paper/35sjjsr3h1kqc",
  "venue": "arXiv",
  "versions": []
}