{
  "annotation_id": "3336005c-cc90-4050-b30b-7f0e8d8603d1",
  "date_created": "2026-03-02T18:02:16.492000Z",
  "date_modified": "2026-03-02T18:02:16.492000Z",
  "file_hash": "91edb9ecbf65ab7e5a868a74a7bdfee842091065600d078bd1b6e17c30d0621b",
  "private": false,
  "record": {
    "abstract": "We present experimental results on the measurement of fidelity decay under\ncontrasting system dynamics using a nuclear magnetic resonance quantum\ninformation processor. The measurements were performed by implementing a\nscalable circuit in the model of deterministic quantum computation with only\none quantum bit. The results show measurable differences between regular and\ncomplex behaviour and for complex dynamics are faithful to the expected\ntheoretical decay rate. Moreover, we illustrate how the experimental method can\nbe seen as an efficient way for either extracting coarse-grained information\nabout the dynamics of a large system, or measuring the decoherence rate from\nengineered environments.",
    "arxiv_id": "quant-ph/0506085",
    "authors": [
      "C. A. Ryan",
      "J. Emerson",
      "D. Poulin",
      "C. Negrevergne",
      "R. Laflamme"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.95.250502",
    "journal_ref": "Physical Review Letters, 95, 250502 (2005)",
    "title": "Characterization of complex quantum dynamics with a scalable NMR   information processor",
    "url": "https://arxiv.org/abs/quant-ph/0506085"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "815c2918-e3c9-4e28-93cf-8b424a84f2d9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}