{
  "annotation_id": "9ce6201c-6fbe-4a7f-8db9-156c2e2b2659",
  "date_created": "2026-03-02T18:02:47.940000Z",
  "date_modified": "2026-03-02T18:02:47.940000Z",
  "file_hash": "83e9b87db4eaa6290f83ea466b7b13728559b1fb534d1204e789ddf270a84b22",
  "private": false,
  "record": {
    "abstract": "The use of linearly independent signal states in realistic implementations of\nquantum key distribution (QKD) enables an eavesdropper to perform unambiguous\nstate discrimination. We explore quantitatively the limits for secure QKD\nimposed by this fact taking into account that the receiver can monitor to some\nextend the photon number statistics of the signals even with todays standard\ndetection schemes. We compare our attack to the beamsplitting attack and show\nthat security against beamsplitting attack does not necessarily imply security\nagainst the attack considered here.",
    "arxiv_id": "quant-ph/9910106",
    "authors": [
      "Miloslav Dusek",
      "Mika Jahma",
      "Norbert L\u00fctkenhaus"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.62.022306",
    "journal_ref": "Physical Review A, Vol. 62, 022306 (2000).",
    "title": "Unambiguous state discrimination in quantum cryptography with weak   coherent states",
    "url": "https://arxiv.org/abs/quant-ph/9910106"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "98f76384-a899-44d7-a3c9-7f546ed8a4a1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}