{
  "annotation_id": "df63c12f-f544-4983-81da-e4315d8e8e90",
  "date_created": "2026-03-02T18:01:46.074000Z",
  "date_modified": "2026-03-02T18:01:46.074000Z",
  "file_hash": "1be840086a886d17dc419864f4d6c0f5e942fb2c51e595e8daf6297a93059470",
  "private": false,
  "record": {
    "abstract": "A photon source based on postselection from entangled photon pairs produced\nby parametric frequency down-conversion is suggested. Its ability to provide\ngood approximations of single-photon states is examined. Application of this\nsource in quantum cryptography for quantum key distribution is discussed.\nAdvantages of the source compared to other currently used sources are\nclarified. Future prospects of the photon source are outlined.",
    "arxiv_id": "quant-ph/0107086",
    "authors": [
      "Jan Perina Jr",
      "Ondrej Haderka",
      "Jan Soubusta"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.64.052305",
    "journal_ref": "Physical Review A 64, 052305 (2001)",
    "title": "Quantum cryptography using photon source based on postselection from   entangled two-photon states",
    "url": "https://arxiv.org/abs/quant-ph/0107086"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b964552a-30a6-49b4-920a-7f4ba3b0c9f5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}