{
  "annotation_id": "78654ac0-2bdd-4439-8010-8bdedb7b909e",
  "date_created": "2026-03-02T18:02:38.185000Z",
  "date_modified": "2026-03-02T18:02:38.185000Z",
  "file_hash": "28ce783520276deb2550704a4eebea3ca090ae4578a518ddf10d958638db5e5f",
  "private": false,
  "record": {
    "abstract": "Using a two-photon interference technique, we measure the delay for\nsingle-photon wavepackets to be transmitted through a multilayer dielectric\nmirror, which functions as a ``photonic bandgap\u0027\u0027 medium. By varying the angle\nof incidence, we are able to confirm the behavior predicted by the group delay\n(stationary phase approximation), including a variation of the delay time from\nsuperluminal to subluminal as the band edge is tuned towards to the wavelength\nof our photons. The agreement with theory is better than 0.5 femtoseconds (less\nthan one quarter of an optical period) except at large angles of incidence. The\nsource of the remaining discrepancy is not yet fully understood.",
    "arxiv_id": "quant-ph/9501013",
    "authors": [
      "Aephraim M. Steinberg",
      "Raymond Y. Chiao"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.51.3525",
    "title": "Sub-femtosecond determination of transmission delay times for a   dielectric mirror (photonic bandgap) as a function of angle of incidence",
    "url": "https://arxiv.org/abs/quant-ph/9501013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1ca9d736-ab9e-4814-aab1-8b9cc63fa4de",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}