{
  "annotation_id": "081394f0-3124-4603-a8bf-8ec1d81c8288",
  "date_created": "2026-03-02T18:02:48.415000Z",
  "date_modified": "2026-03-02T18:02:48.415000Z",
  "file_hash": "5fd3e3e4b7e26ecb526e46d459fe9534d69e9c8515170ab7ee7f2a03a2ec6e1c",
  "private": false,
  "record": {
    "abstract": "The phenomenon of quantum interrogation allows one to optically detect the\npresence of an absorbing object, without the measuring light interacting with\nit. In an application of the quantum Zeno effect, the object inhibits the\notherwise coherent evolution of the light, such that the probability that an\ninterrogating photon is absorbed can in principle be arbitrarily small. We have\nimplemented this technique, demonstrating efficiencies exceeding the 50%\ntheoretical-maximum of the original ``interaction-free\u0027\u0027 measurement proposal.\nWe have also predicted and experimentally verified a previously unsuspected\ndependence on loss; efficiencies of up to 73% were observed and the feasibility\nof efficiencies up to 85% was demonstrated.",
    "arxiv_id": "quant-ph/9909083",
    "authors": [
      "P. G. Kwiat",
      "A. G. White",
      "J. R. Mitchell",
      "O. Nairz",
      "G. Weihs",
      "H. Weinfurter",
      "A. Zeilinger"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.83.4725",
    "journal_ref": "Physical Review Letters 83, no. 23, pp. 4725-4728 (1999).",
    "title": "High-efficiency quantum interrogation measurements via the quantum Zeno   effect",
    "url": "https://arxiv.org/abs/quant-ph/9909083"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "768bb461-2ffa-41c1-b1a7-850737363fcf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}