{
  "annotation_id": "f804d2e7-bcb0-4a7f-b101-bc8d13ab31f1",
  "date_created": "2026-03-02T18:02:30.845000Z",
  "date_modified": "2026-03-02T18:02:30.845000Z",
  "file_hash": "78b1f1a77d60ed045065a251b8397de6e1a16b0f7a7b48b117f0ac936f044071",
  "private": false,
  "record": {
    "abstract": "We propose an efficient quantum key distribution protocol based on the\nphoton-pair generation from parametric down-conversion (PDC). It uses the same\nexperimental setup as the conventional protocol, but a refined data analysis\nenables detection of photon-number splitting attacks by utilizing information\nfrom a built-in decoy state. Assuming the use of practical detectors, we\nanalyze the unconditional security of the new scheme and show that it improves\nthe secure key generation rate by several orders of magnitude at long\ndistances, using a high intensity PDC source.",
    "arxiv_id": "quant-ph/0610118",
    "authors": [
      "Yoritoshi Adachi",
      "Takashi Yamamoto",
      "Masato Koashi",
      "Nobuyuki Imoto"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.99.180503",
    "journal_ref": "Phys. Rev. Lett. 99, 180503 (2007)",
    "title": "Simple and efficient quantum key distribution with parametric   down-conversion",
    "url": "https://arxiv.org/abs/quant-ph/0610118"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "231990c2-3828-45aa-9e30-671f9cf26a87",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}