{
  "annotation_id": "11c9f8f1-2f74-4a79-9ffb-91ef2fb4c04c",
  "date_created": "2026-03-02T18:02:12.572000Z",
  "date_modified": "2026-03-02T18:02:12.572000Z",
  "file_hash": "7b95b576c2539b39dc14808952bac27ddc17a3563f2076c5b63ee0cd64709368",
  "private": false,
  "record": {
    "abstract": "Efficient teleportation is a crucial step for quantum computation and quantum\nnetworking. In the case of qubits, four different entangled Bell states have to\nbe distinguished. We have realized a probabilistic, but in principle\ndeterministic, Bell-state analyzer for two photonic quantum bits by the use of\na nondestructive controlled-NOT gate based on entirely linear optical elements.\nThis gate was capable of distinguishing between all of the Bell states with\nhigher than 75% fidelity without any noise substraction due to utilizing\nquantum interference effects.",
    "arxiv_id": "quant-ph/0410244",
    "authors": [
      "Philip Walther",
      "Anton Zeilinger"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.010302",
    "journal_ref": "Physical Review A 72 010302(R) (2005)",
    "title": "Experimental Realization of a Photonic Bell-State Analyzer",
    "url": "https://arxiv.org/abs/quant-ph/0410244"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ffc9fedc-4704-4677-9eda-d795ce429249",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}