{
  "annotation_id": "5b3380bf-a35a-42fe-99ce-f7d7ecfe2fe9",
  "date_created": "2026-03-02T18:02:03.134000Z",
  "date_modified": "2026-03-02T18:02:03.134000Z",
  "file_hash": "892980debcd15e1111dbd413b6d6f06122b8726f27e0f244f49c0657ea49df4a",
  "private": false,
  "record": {
    "abstract": "We have experimentally observed superluminal and infinite group velocities in\nbulk hexagonal two-dimensional photonic bandgap crystals with bandgaps in the\nmicrowave region. The group velocities depend on the polarization of the\nincident radiation and the air-filling fraction of the crystal.",
    "arxiv_id": "quant-ph/0309109",
    "authors": [
      "D. R. Solli",
      "C. F. McCormick",
      "R. Y. Chiao",
      "J. M. Hickmann"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "D. R. Solli, C. F. McCormick, R. Y. Chiao, and J. M. Hickmann,\n  \"Experimental observation of superluminal group velocities in bulk\n  two-dimensional photonic bandgap crystals,\" Ieee Journal of Selected Topics\n  in Quantum Electronics 9(1), 40-42 (2003)",
    "title": "Experimental observation of superluminal group velocities in bulk   two-dimensional photonic bandgap crystals",
    "url": "https://arxiv.org/abs/quant-ph/0309109"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f4873aa5-fa86-4ecf-b21c-0dae2229c71a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}