{
  "annotation_id": "e113d544-c06c-400c-b9c0-174cdeb7419b",
  "date_created": "2026-03-02T18:01:45.204000Z",
  "date_modified": "2026-03-02T18:01:45.204000Z",
  "file_hash": "87de4f449a51f460e98172735ec51164a8e83a78a507ada4383afc3b4774ee78",
  "private": false,
  "record": {
    "abstract": "We discuss long code problems in the Bennett-Brassard 1984 (BB84) quantum key\ndistribution protocol and describe how they can be overcome by concatenation of\nthe protocol. Observing that concatenated modified Lo-Chau protocol finally\nreduces to the concatenated BB84 protocol, we give the unconditional security\nof the concatenated BB84 protocol.",
    "arxiv_id": "quant-ph/0110079",
    "authors": [
      "W. -Y. Hwang",
      "K. Matsumoto",
      "H. Imai",
      "J. Kim",
      "H. -W. Lee"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.67.024302",
    "journal_ref": "Physical Review A 67, 024302 (2003)",
    "title": "Shor-Preskill Type Security-Proofs for Concatenated Bennett-Brassard   1984 Quantum Key Distribution Protocol",
    "url": "https://arxiv.org/abs/quant-ph/0110079"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2f2951fb-786b-48ae-bdac-488bd697a64f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}