{
  "annotation_id": "4d97ffcd-bc56-4594-ba7c-e54a95410486",
  "date_created": "2026-03-02T18:02:10.069000Z",
  "date_modified": "2026-03-02T18:02:10.069000Z",
  "file_hash": "05e64346bed630d21e7de5d64a0dc67958084b15fdfb6ecd4b9d82bfc1081274",
  "private": false,
  "record": {
    "abstract": "Our last experimental results on the realization of a measurement-conditional\nunitary operation at single photon level are presented. This gate operates by\nrotating by $90^o$ the polarization of a photon produced by means of Type-II\nParametric Down Conversion conditional to a polarization measurement on the\ncorrelated photon. We then propose a new scheme for measuring the quantum\nefficiency of a single photon detection apparatus by using this set-up. We\npresent experimental results obtained with this scheme compared with {\\it\ntraditional} biphoton calibration. Our results show the interesting\npotentiality of the suggested scheme.",
    "arxiv_id": "quant-ph/0409055",
    "authors": [
      "M. Genovese",
      "G. Brida",
      "M. Chekhova",
      "M. Gramegna",
      "L. Krivitsky",
      "S. Kulik",
      "M. L. Rastello"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1117/12.561416",
    "title": "Experimental realization of a measurement conditional unitary operation   at single photon level and application to detector characterization",
    "url": "https://arxiv.org/abs/quant-ph/0409055"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6a2905e2-93d6-4004-9cda-dcf80d88c6a1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}