{
  "annotation_id": "7c05c585-bd56-421c-a207-c8a476085ad4",
  "date_created": "2026-03-02T18:02:16.548000Z",
  "date_modified": "2026-03-02T18:02:16.548000Z",
  "file_hash": "ea2dd7aaca39eb86bf9fc8946ad5a2d2bfcbbcbc29f180d8c273d3181efdf72e",
  "private": false,
  "record": {
    "abstract": "We present an example of quantum process tomography performed on a single\nsolid state qubit. The qubit used is two energy levels of the triplet state in\nthe Nitrogen-Vacancy defect in Diamond. Quantum process tomography is applied\nto a qubit which has been allowed to decohere for three different time periods.\nIn each case the process is found in terms of the $\\chi$ matrix representation\nand the affine map representation. The discrepancy between experimentally\nestimated process and the closest physically valid process is noted.",
    "arxiv_id": "quant-ph/0503153",
    "authors": [
      "M. Howard",
      "J. Twamley",
      "C. Wittmann",
      "T. Gaebel",
      "F. Jelezko",
      "J. Wrachtrup"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Quantum process tomography of a single solid state qubit",
    "url": "https://arxiv.org/abs/quant-ph/0503153"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e1dee0d8-48e5-428a-8622-bdf9aea0ed20",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}