{
  "annotation_id": "9dd2b2ea-b88c-4c94-9354-224ff656f6d4",
  "date_created": "2026-03-02T18:02:23.899000Z",
  "date_modified": "2026-03-02T18:02:23.899000Z",
  "file_hash": "8e7899527eaa04e4449814e2fe1bbe5e13dda61c8b792927dba10895c417345d",
  "private": false,
  "record": {
    "abstract": "We produce two identical keys using, for the first time, entangled trinary\nquantum systems (qutrits) for quantum key distribution. The advantage of\nqutrits over the normally used binary quantum systems is an increased coding\ndensity and a higher security margin. The qutrits are encoded into the orbital\nangular momentum of photons, namely Laguerre-Gaussian modes with azimuthal\nindex l +1, 0 and -1, respectively. The orbital angular momentum is controlled\nwith phase holograms. In an Ekert-type protocol the violation of a\nthree-dimensional Bell inequality verifies the security of the generated keys.\nA key is obtained with a qutrit error rate of approximately 10 %.",
    "arxiv_id": "quant-ph/0511163",
    "authors": [
      "Simon Groeblacher",
      "Thomas Jennewein",
      "Alipasha Vaziri",
      "Gregor Weihs",
      "Anton Zeilinger"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1367-2630/8/5/075",
    "journal_ref": "New J. Phys. 8 (2006) 75",
    "title": "Experimental Quantum Cryptography with Qutrits",
    "url": "https://arxiv.org/abs/quant-ph/0511163"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9013004a-ce73-4b1e-b439-7ac2828edb14",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}