{
  "annotation_id": "452b2482-3f37-4354-92a3-e858cd71ae1e",
  "date_created": "2026-03-02T18:02:06.586000Z",
  "date_modified": "2026-03-02T18:02:06.586000Z",
  "file_hash": "5d07648a468f6ab653ffeb61bab124959bd3e415202058a4fb80d6f363e898e0",
  "private": false,
  "record": {
    "abstract": "Universal logic gates for two quantum bits (qubits) form an essential\ningredient of quantum information processing. However, the photons, one of the\nbest candidates for qubits, suffer from the lack of strong nonlinear coupling\nrequired for quantum logic operations. Here we show how this drawback can be\novercome by reporting a proof-of-principle experimental demonstration of a\nnon-destructive controlled-NOT (CNOT) gate for two independent photons using\nonly linear optical elements in conjunction with single-photon sources and\nconditional dynamics. Moreover, we have exploited the CNOT gate to discriminate\nall the four Bell-states in a teleportation experiment.",
    "arxiv_id": "quant-ph/0404129",
    "authors": [
      "Zhi Zhao",
      "An-Ning Zhang",
      "Yu-Ao Chen",
      "Han Zhang",
      "Jiangfeng Du",
      "Tao Yang",
      "Jian-Wei Pan"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.94.030501",
    "journal_ref": "Phys. Rev. Lett. 94, 030501 (2005)",
    "title": "Experimental demonstration of a non-destructive controlled-NOT quantum   gate for two independent photon-qubits",
    "url": "https://arxiv.org/abs/quant-ph/0404129"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a6b900b6-eeb5-4c51-8190-a8772f086f76",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}