{
  "annotation_id": "44716612-315d-4eed-b0c2-3b0ef60e839f",
  "date_created": "2026-03-02T18:02:12.976000Z",
  "date_modified": "2026-03-02T18:02:12.976000Z",
  "file_hash": "2c7fd5194334729e977b0a0a478fd368fbb0db830c3678209f99bd817de93151",
  "private": false,
  "record": {
    "abstract": "We discuss the characterization and properties of quantum non-demolition\n(QND) measurements on qubit systems. We introduce figures of merit which can be\napplied to systems of any Hilbert space dimension thus providing universal\ncriteria for characterizing QND measurements. We discuss the controlled-NOT\ngate and an optical implementation as examples of QND devices for qubits. We\nalso discuss the QND measurement of weak values.",
    "arxiv_id": "quant-ph/0412149",
    "authors": [
      "T. C. Ralph",
      "S. D. Bartlett",
      "J. L. O\u0027Brien",
      "G. J. Pryde",
      "H. M. Wiseman"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.73.012113",
    "journal_ref": "Phys.Rev.A73:012113,2006",
    "title": "Quantum Non-demolition Measurements on Qubits",
    "url": "https://arxiv.org/abs/quant-ph/0412149"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "487c5993-9cb6-47ee-bc50-919fe5aa3249",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}