{
  "annotation_id": "933b42df-c62b-4580-808b-8aa706c550a4",
  "date_created": "2026-03-02T18:02:30.815000Z",
  "date_modified": "2026-03-02T18:02:30.815000Z",
  "file_hash": "c2fa521db7f4b91c17351bec63897beb0600091244ca2d0b49b0d6846211e88c",
  "private": false,
  "record": {
    "abstract": "We propose a quantum key distribution scheme which closely matches the\nperformance of a perfect single photon source. It nearly attains the physical\nupper bound in terms of key generation rate and maximally achievable distance.\nOur scheme relies on a practical setup based on a parametric downconversion\nsource and present-day, non-ideal photon-number detection. Arbitrary\nexperimental imperfections which lead to bit errors are included. We select\ndecoy states by classical post-processing. This allows to improve the effective\nsignal statistics and achievable distance.",
    "arxiv_id": "quant-ph/0609195",
    "authors": [
      "Wolfgang Mauerer",
      "Christine Silberhorn"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.75.050305",
    "journal_ref": "Phys. Rev. A 75, 050305(R) (2007)",
    "title": "Passive decoy state quantum key distribution: Closing the gap to perfect   sources",
    "url": "https://arxiv.org/abs/quant-ph/0609195"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b33f52de-3022-4983-a40f-3012b746d76b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}