{
  "annotation_id": "e8d7cdbc-d889-493c-bb62-741f5bfa4182",
  "date_created": "2026-03-02T18:02:27.550000Z",
  "date_modified": "2026-03-02T18:02:27.550000Z",
  "file_hash": "34903e4799b090bfbb4ad117e0490aa4493b68a94f4426978c85544f42b2e624",
  "private": false,
  "record": {
    "abstract": "We study the interference structure of the second-order intensity correlation\nfunction for polarization-entangled two-photon light obtained from type-II\ncollinear frequency-degenerate spontaneous parametric down-conversion (SPDC).\nThe structure is visualised due to the spreading of the two-photon amplitude as\ntwo-photon light propagates through optical fibre with group-velocity\ndispersion (GVD). Because of the spreading, polarization-entangled Bell states\ncan be obtained without any birefringence compensation at the output of the\nnonlinear crystal; instead, proper time selection of the intensity correlation\nfunction is required. A birefringent material inserted at the output of the\nnonlinear crystal (either reducing the initial o-e delay between the oppositely\npolarized twin photons or increasing this delay) leads to a more complicated\ninterference structure of the correlation function.",
    "arxiv_id": "quant-ph/0607137",
    "authors": [
      "G. Brida",
      "M. V. Chekhova",
      "M. Genovese",
      "L. A. Krivitsky"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1134/S1054660X0704041X",
    "journal_ref": "Phys. Rev. A 75, 015801 (2007)",
    "title": "Dispersion spreading of polarization-entangled states of light and   two-photon interference",
    "url": "https://arxiv.org/abs/quant-ph/0607137"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6339e47e-53de-4888-9ebc-40c18ee7eb61",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}