{
  "annotation_id": "78180ecc-5cf8-42bd-b2e4-a8eb33611a41",
  "date_created": "2026-03-02T18:01:46.072000Z",
  "date_modified": "2026-03-02T18:01:46.072000Z",
  "file_hash": "fc9075e73cf247f3484b3294ba0c7a261908256620e21f975f87b337d9197840",
  "private": false,
  "record": {
    "abstract": "A method is proposed to employ entangled and squeezed light for determining\nthe position of a party and for synchronizing distant clocks. An accuracy gain\nover analogous protocols that employ classical resources is demonstrated and a\nquantum-cryptographic positioning application is given, which allows only\ntrusted parties to learn the position of whatever must be localized. The\npresence of a lossy channel and imperfect photodetection is considered. The\nadvantages in using partially entangled states is discussed.",
    "arxiv_id": "quant-ph/0107140",
    "authors": [
      "Vittorio Giovannetti",
      "Seth Lloyd",
      "Lorenzo Maccone"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.65.022309",
    "journal_ref": "Phys. Rev. A 65, 022309 (2002)",
    "title": "Positioning and clock synchronization through entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0107140"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3372c1c8-16e0-4715-b592-910a08daeeaf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}