{
  "annotation_id": "2c6bed81-4a94-45b8-b664-70f1d05e1cda",
  "date_created": "2026-03-02T18:02:24.137000Z",
  "date_modified": "2026-03-02T18:02:24.137000Z",
  "file_hash": "1e99346eae08c3e1b2808202abad9846cf1469609581596aeff9d853b440383b",
  "private": false,
  "record": {
    "abstract": "A joint measurement of two observables is a {\\it simultaneous} measurement of\nboth quantities upon the {\\it same} quantum system. When two quantum-mechanical\nobservables do not commute, then a joint measurement of these observables\ncannot be accomplished by projective measurements alone. In this paper we shall\ndiscuss the use of quantum cloning to perform a joint measurement of two\ncomponents of spin associated with a qubit system. We introduce a cloning\nscheme which is optimal with respect to this task. This cloning scheme may be\nthought to work by cloning two components of spin onto its outputs. We compare\nthe proposed cloning machine to existing cloners.",
    "arxiv_id": "quant-ph/0601098",
    "authors": [
      "Thomas Brougham",
      "Erika Andersson",
      "Stephen M. Barnett"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.73.062319",
    "title": "Cloning and Joint Measurements of Incompatible Components of Spin",
    "url": "https://arxiv.org/abs/quant-ph/0601098"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "417bf029-b2aa-417a-b636-fd30e84dc140",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}