{
  "annotation_id": "4e4539b9-2270-4694-9476-a431e89eea3f",
  "date_created": "2026-03-02T18:02:10.048000Z",
  "date_modified": "2026-03-02T18:02:10.048000Z",
  "file_hash": "749fc8e41e40440c76dc946da5312be301a1e29f530731013d1f7560b48097a4",
  "private": false,
  "record": {
    "abstract": "In this paper, we discuss the minimal number of observables, where\nexpectation values at some time instant determine the trajectory of a d-level\nquantum system (\"qudit\") governed by the Gaussian semigroup. We assume that the\nmacroscopic information about the system in question is given by the mean\nvalues of n selfadjoint operators $Q_1,...,Q_n$ at some time instants\n$t_1\u003ct_2\u003c...\u003ct_r$, where $n\u003cd^2-1$ and $r\\leq {\\rm deg} \\mu(\\lambda,\\bBBL)$.\nHere $\\mu(\\lambda,\\bBBL)$ stands for the minimal polynomial of the generator of\nthe Gaussian flow.",
    "arxiv_id": "quant-ph/0408171",
    "authors": [
      "Andrzej Jamio\u0142kowski"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Open Sys. Information Dyn. 11, 63-70 (2004)",
    "title": "On a Stroboscopic Approach to Quantum Tomography of Qudits Governed by   Gaussian Semigroups",
    "url": "https://arxiv.org/abs/quant-ph/0408171"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "34ca6803-d592-458d-afe6-7482622997cc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}