{
  "abstract": "Fermionic teleportation near a Schwarzschild horizon involves two physically distinct ingredients that are often varied together: Hawking thermal mixing and the relative composition of the right and left Unruh modes. We separate them by factorizing the reduced map of the detected exterior fermionic mode into a mode-preparation channel and a Hawking thermal channel. At fixed right-left Unruh-mode composition, we then solve a global constrained quantum-channel optimization over all two-qubit resource states whose fully entangled fraction remains at or below the standard teleportation threshold immediately before thermal mixing. A parity twirl and positivity reduce the arbitrary-state problem exactly to a two-variable quadratic optimization. The solution yields a necessary-and-sufficient activation boundary, a second exact boundary for attaining the universal optimum, and explicit optimizing states. The resulting phase diagram contains a strict no-go region, a composition-limited activation region, and a universal-bound region. The analysis converts state-specific observations of Hawking-assisted teleportation into exact channel-level bounds over the full two-qubit state space.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05773",
  "author_total": 1,
  "authors": [
    {
      "name": "Zhiming Huang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ejtdcg5aj4rzy.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05773",
  "fulltext_url": null,
  "id": "ejtdcg5aj4rzy",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05773",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05773",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ejtdcg5aj4rzy.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.05773",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05773"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Exact teleportation bounds for fermionic Hawking thermality beyond the single-mode approximation",
  "title_text": "Exact teleportation bounds for fermionic Hawking thermality beyond the single-mode approximation",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:19Z",
  "url": "https://research.draconitic.com/paper/ejtdcg5aj4rzy",
  "venue": "arXiv",
  "versions": []
}