{
  "annotation_id": "444051c5-b726-4b16-975e-940edf397bf4",
  "date_created": "2026-03-02T18:01:59.882000Z",
  "date_modified": "2026-03-02T18:01:59.882000Z",
  "file_hash": "119320a630d4d6f8ea1ed6a27053fb3ad6bdd5955939f3d83c267bc8efa06476",
  "private": false,
  "record": {
    "abstract": "Quantum spectroscopy was performed using the frequency-entangled broadband\nphoton pairs generated by spontaneous parametric down-conversion. An absorptive\nsample was placed in front of the idler photon detector, and the frequency of\nsignal photons was resolved by a diffraction grating. The absorption spectrum\nof the sample was measured by counting the coincidences, and the result is in\nagreement with the one measured by a conventional spectrophotometer with a\nclassical light source.",
    "arxiv_id": "quant-ph/0306154",
    "authors": [
      "Atsushi Yabushita",
      "Takayoshi Kobayashi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.69.013806",
    "journal_ref": "Phys. Rev. A 69, 013806 (2004)",
    "title": "Spectroscopy by frequency entangled photon pairs",
    "url": "https://arxiv.org/abs/quant-ph/0306154"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b1ee0c75-bbb7-4fe3-9007-f798d0be636f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}