{
  "annotation_id": "71cfee52-dada-4e04-8b46-afc029665910",
  "date_created": "2026-03-02T18:01:03.670000Z",
  "date_modified": "2026-03-02T18:01:03.670000Z",
  "file_hash": "dd49fef441a66cd1dcc256ecc3a942562a49adb78cf715e70520eec16785c0ca",
  "private": false,
  "record": {
    "abstract": "We report an experimental comparison of three-photon-absorption resonances\n(known as \"N-resonances\") for the D_1 and D_2 optical transitions of thermal\n87Rb vapor. We find that the D_2 N-resonance has better contrast, a broader\nlinewidth, and a more symmetric lineshape than the D_1 N-resonance. Taken\ntogether, these factors imply superior performance for frequency standards\noperating on alkali D_2 N-resonances, in contrast to coherent population\ntrapping (CPT) resonances for which the D_2 transition provides poorer\nfrequency standard performance than the D_1 transition.",
    "arxiv_id": "physics/0601079",
    "authors": [
      "Irina Novikova",
      "David F. Phillips",
      "Alexander S. Zibrov",
      "Ronald L. Walsworth",
      "Alexksei V. Taichenachev",
      "Valeriy I. Yudin"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.optics"
    ],
    "doi": "10.1364/OL.31.002353",
    "title": "Comparison of 87Rb N-resonances for D1 and D2 transitions",
    "url": "https://arxiv.org/abs/physics/0601079"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d4e68378-b4f8-457e-97ed-d1ef718b2d46",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}