{
  "annotation_id": "afa76e56-e711-476a-af2a-00c7945509f6",
  "date_created": "2026-03-02T18:02:02.860000Z",
  "date_modified": "2026-03-02T18:02:02.860000Z",
  "file_hash": "4a8721c1dc73780c93ef89d54634a65eee50859e9c30bcfb8ed4a4a40634b03c",
  "private": false,
  "record": {
    "abstract": "We present an algorithm for synchronizing two clocks based on second-order\nquantum interference between entangled photons generated by parametric\ndown-conversion. The procedure is distinct from the standard Einstein two-way\nclock synchronization method in that photon correlations are used to define\nsimultaneous events in the frame of reference of a Hong-Ou-Mandel (HOM)\ninterferometer. Once the HOM interferometer is balanced, by use of an\nadjustable optical delay in one arm, arrival times of simultaneously generated\nphotons are recorded by each clock. Classical information on the arrival times\nis sent from one clock to the other, and a correlation of arrival times is done\nto determine the clock offset.",
    "arxiv_id": "quant-ph/0311162",
    "authors": [
      "Thomas B. Bahder",
      "William M. Golding"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1063/1.1834461",
    "title": "Clock Synchronization based on Second-Order Quantum Coherence of   Entangled Photons",
    "url": "https://arxiv.org/abs/quant-ph/0311162"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8a1c14e7-b482-4cb0-84ad-beba5a9d9c75",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}