{
  "annotation_id": "d5350c31-27a0-4126-ba00-88a79ba3b33a",
  "date_created": "2026-03-02T18:02:07.106000Z",
  "date_modified": "2026-03-02T18:02:07.106000Z",
  "file_hash": "c655e295e649af93f1ed6836379fda87b89ad96a952f7430a1ea05cee962aafe",
  "private": false,
  "record": {
    "abstract": "We demonstrate a robust implementation of a deterministic linear-optical\nControlled-NOT (CNOT) gate for single-photon two-qubit quantum logic. A\npolarization Sagnac interferometer with an embedded 45$^{\\circ}$-oriented dove\nprism is used to enable the polarization control qubit to act on the momentum\n(spatial) target qubit of the same photon. The CNOT gate requires no active\nstabilization because the two spatial modes share a common path, and it is used\nto entangle the polarization and momentum qubits.",
    "arxiv_id": "quant-ph/0402208",
    "authors": [
      "Marco Fiorentino",
      "Franco N. C. Wong"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.93.070502",
    "title": "Deterministic Controlled-NOT gate for single-photon two-qubit quantum   logic",
    "url": "https://arxiv.org/abs/quant-ph/0402208"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dd76dd01-7a66-4c52-98c0-bfa9b58852a1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}