{
  "annotation_id": "3576376c-2468-4e07-93f6-b1d99a0d9bed",
  "date_created": "2026-03-02T18:02:09.932000Z",
  "date_modified": "2026-03-02T18:02:09.932000Z",
  "file_hash": "5a047cde34acc72008d2b89e17a107a3c483cf4e50297a90f0e4ff1988124aaf",
  "private": false,
  "record": {
    "abstract": "We report on the the experimental realization of hyper-entangled two photon\nstates, entangled in polarization and momentum. These states are produced by a\nhigh brilliance parametric source of entangled photon pairs with peculiar\ncharacteristics of flexibility in terms of state generation. The quality of the\nentanglement in the two degrees of freedom has been tested by multimode\nHong-Ou-Mandel interferometry.",
    "arxiv_id": "quant-ph/0406148",
    "authors": [
      "C. Cinelli",
      "M. Barbieri",
      "F. De Martini",
      "P. Mataloni"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Experimental realization of hyper-entangled two-photon states",
    "url": "https://arxiv.org/abs/quant-ph/0406148"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dc4a4b82-49d9-41fd-9697-a1cb96021062",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}