{
  "annotation_id": "63e8e739-2ce7-4036-8759-c6c715339619",
  "date_created": "2026-03-02T18:02:13.791000Z",
  "date_modified": "2026-03-02T18:02:13.791000Z",
  "file_hash": "8187633e187fd2ec123e905e494ef3f3f617cb10eb6d2a0f8a0b5fd581cbf60b",
  "private": false,
  "record": {
    "abstract": "The novel experimental realization of three-state optical quantum systems is\npresented. We use the polarization state of biphotons,propagating in single\nfrequency- and spatial mode, to generate an arbitrary qutrits. In particular\nthe specific sequence of states that are used in the extended version of BB84\nquantum key distribution protocol was generated and tested. We experimentally\nverify the orthogonality of the 12 basic states and demonstrate the ability of\nswitching between them. The tomography procedure is applied to reconstruct the\ndensity matrices of generated states.",
    "arxiv_id": "quant-ph/0411192",
    "authors": [
      "Yu. I. Bogdanov",
      "M. V. Chekhova",
      "S. P. Kulik",
      "G. A. Maslennikov",
      "C. H. Oh",
      "M. K. Tey"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1117/12.620494",
    "title": "Preparation of arbitrary qutrit state based on biphotons",
    "url": "https://arxiv.org/abs/quant-ph/0411192"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e9233dc2-970a-4b92-a95a-910f637838ef",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}