{
  "annotation_id": "2bb755b8-f3fa-403f-9052-2974301aca6e",
  "date_created": "2026-03-02T18:02:03.541000Z",
  "date_modified": "2026-03-02T18:02:03.541000Z",
  "file_hash": "028a5955638b8a85cb7547531b526df6064893d58d5591c24ccd4c42068dd6a7",
  "private": false,
  "record": {
    "abstract": "Incoherence in the controlled Hamiltonian is an important limitation on the\nprecision of coherent control in quantum information processing. Incoherence\ncan typically be modelled as a distribution of unitary processes arising from\nslowly varying experimental parameters. We show how it introduces artifacts in\nquantum process tomography and we explain how the resulting estimate of the\nsuperoperator may not be completely positive. We then go on to attack the\ninverse problem of extracting an effective distribution of unitaries that\ncharacterizes the incoherence via a perturbation theory analysis of the\nsuperoperator eigenvalue spectra.",
    "arxiv_id": "quant-ph/0312116",
    "authors": [
      "N. Boulant",
      "S. Furuta",
      "J. Emerson",
      "T. F. Havel",
      "D. G. Cory"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1063/1.1773161",
    "journal_ref": "J. of Chem. Phys. 121, 2955-2961 (2004).",
    "title": "Incoherent Noise and Quantum Information Processing",
    "url": "https://arxiv.org/abs/quant-ph/0312116"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e9a24196-80c5-4493-a02c-1bab0c451365",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}