{
  "annotation_id": "29d8ce54-d09c-4000-b417-9681320cbb43",
  "date_created": "2026-03-02T18:01:42.002000Z",
  "date_modified": "2026-03-02T18:01:42.002000Z",
  "file_hash": "d5bb3f020e26cc18e326fe2884b24ba766e7faced4510069ef44d35ca2b43ba8",
  "private": false,
  "record": {
    "abstract": "Quantum operations describe any state change allowed in quantum mechanics,\nincluding the evolution of an open system or the state change due to a\nmeasurement. In this letter we present a general method based on quantum\ntomography for measuring experimentally the matrix elements of an arbitrary\nquantum operation. As input the method needs only a single entangled state. The\nfeasibility of the technique for the electromagnetic field is shown, and the\nexperimental setup is illustrated based on homodyne tomography of a twin-beam.",
    "arxiv_id": "quant-ph/0012071",
    "authors": [
      "G. M. D\u0027Ariano",
      "P. Lo Presti"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.86.4195",
    "journal_ref": "Phys. Rev. Lett. vol. 86, pag. 4195 (2001)",
    "title": "Tomography of Quantum Operations",
    "url": "https://arxiv.org/abs/quant-ph/0012071"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "519fcf5a-93d7-4e04-b314-013ab1e5e419",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}