{
  "abstract": "In this work, we demonstrate a dual-function, common-aperture free-space optical system that simultaneously supports decoy-state BB84 quantum key distribution (QKD) at 803 nm and bidirectional classical laser communication at 640/660 nm over a 10.31 km terrestrial link from a mobile platform to a stationary ground station. To the best of our knowledge, this is the first field demonstration of a fully integrated common-aperture architecture where a co-propagating classical optical link simultaneously performs full QKD post-processing and ecrypted payload transmission over a 10 km atmospheric channel. The classical link utilizes Manchester-coded on-off keying (MC-OOK) at 10 MHz, achieving a packet error rate of $\\sim$ 0.4 $\\%$ (estimated bit error rate (BER) of 3.13 $\\times$ 10$^{-5}$) with hardware-based self-synchronization and error-packet retransmission. Over the 10.31 km link, the QKD system achieved an average quantum bit error rate (QBER) of 2.512 $\\%$ and an average secret key rate of 644 bps using rate-adaptive low-density parity-check (LDPC) codes. Finally, using the distilled keys, real-time AES-256 encrypted image transmission was executed over the co-aligned classical optical channel, proving the feasibility of a completely self-contained, jam resistant mobile quantum optical network.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.27427",
  "author_total": 7,
  "authors": [
    {
      "name": "Dongkyu Kim"
    },
    {
      "name": "Dong-Gil Im"
    },
    {
      "name": "Kyungdeuk Park"
    },
    {
      "name": "Jisu Kim"
    },
    {
      "name": "Jonguk Choi"
    },
    {
      "name": "Yonggi Jo"
    },
    {
      "name": "Yong Sup Ihn"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/44mp9caypx8pj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.27427",
  "fulltext_url": null,
  "id": "44mp9caypx8pj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.27427",
  "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"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7223139682",
  "pdf_url": "https://arxiv.org/pdf/2610.27427",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/44mp9caypx8pj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.27427",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.27427"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Field demonstration of a self-contained 10 km mobile-to-ground quantum network node via common-aperture co-propagation",
  "title_text": "Field demonstration of a self-contained 10 km mobile-to-ground quantum network node via common-aperture co-propagation",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/44mp9caypx8pj",
  "venue": "arXiv",
  "versions": []
}