{
  "annotation_id": "e1cff8c1-e5a6-454f-85b8-6b59f10f5c37",
  "date_created": "2026-03-02T18:02:06.403000Z",
  "date_modified": "2026-03-02T18:02:06.403000Z",
  "file_hash": "dcc54d5c3b1f9806d46d9548d632f148d9d7e86801ffa3019e588d361bd94631",
  "private": false,
  "record": {
    "abstract": "The novel experimental realization of three-level optical quantum systems is\npresented. We use the polarization state of biphotons to generate a specific\nsequence of states that are used in the extended version of BB84 protocol. We\nexperimentally verify the orthogonality of the basis states and demonstrate the\nability to easily switch between them. The tomography procedure is employed to\nreconstruct the density matrices of generated states.",
    "arxiv_id": "quant-ph/0405169",
    "authors": [
      "Yu. Bogdanov",
      "M. Chekhova",
      "S. Kulik",
      "G. Maslennikov",
      "C. H. Oh",
      "M. K. Tey",
      "A. Zhukov"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.93.230503",
    "journal_ref": "Phys.Rev.Lett., 93, 230503 (2004)",
    "title": "Qutrit state engineering with biphotons",
    "url": "https://arxiv.org/abs/quant-ph/0405169"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "70f49111-7379-409c-8b43-5bd31401e0bf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}