{
  "annotation_id": "338ecf96-fcc6-465a-8ca0-ee26a6da319c",
  "date_created": "2026-03-02T18:02:44.904000Z",
  "date_modified": "2026-03-02T18:02:44.904000Z",
  "file_hash": "26a73e4adb0c12dc90b5e9f6d8d2233324a65c150bc3bbb47d5129cf1108c838",
  "private": false,
  "record": {
    "abstract": "We report the observation of small group velocities of order 90 meters per\nsecond, and large group delays of greater than 0.26 ms, in an optically dense\nhot rubidium gas (~360 K). Media of this kind yield strong nonlinear\ninteractions between very weak optical fields, and very sharp spectral\nfeatures. The result is in agreement with previous studies on nonlinear\nspectroscopy of dense coherent media.",
    "arxiv_id": "quant-ph/9904031",
    "authors": [
      "Michael M. Kash",
      "Vladimir A. Sautenkov",
      "Alexander S. Zibrov",
      "L. Hollberg",
      "George R. Welch",
      "Mikhail D. Lukin",
      "Yuri Rostovtsev",
      "Edward S. Fry",
      "Marlan O. Scully"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.82.5229",
    "title": "Ultra-Slow Light and Enhanced Nonlinear Optical Effects in a Coherently   Driven Hot Atomic Gas",
    "url": "https://arxiv.org/abs/quant-ph/9904031"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "981ac4f4-ab7e-42b0-8063-8649011bb7c2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}