{
  "annotation_id": "fd42322f-dac0-4d3e-99cc-7d69005c6234",
  "date_created": "2026-03-02T18:01:41.432000Z",
  "date_modified": "2026-03-02T18:01:41.432000Z",
  "file_hash": "8c74be1bd5fa267fb8d4f44431db0e895a6f099c818ed302176a511c28332598",
  "private": false,
  "record": {
    "abstract": "We report ultraslow group velocities of light in a solid. Light speeds as\nslow as 45 m/s were observed, corresponding to a group delay of 66 ms in a 3-mm\nthick crystal. Reduction of the group velocity is accomplished by using a sharp\nspectral feature in absorption and dispersion, produced by a Raman excited spin\ncoherence in an optically dense Pr doped Y2SiO5 crystal.",
    "arxiv_id": "quant-ph/0010009",
    "authors": [
      "A. V. Turukhin",
      "V. S. Sudarshanam",
      "M. S. Shahriar",
      "J. A. Musser",
      "P. R. Hemmer"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Observation of Ultraslow Group Velocity of Light in a Solid",
    "url": "https://arxiv.org/abs/quant-ph/0010009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "24a07df7-6ca5-4afe-bd43-aad6b2557241",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}