{
  "annotation_id": "a9ef06b5-b279-4771-b835-3feeda47c752",
  "date_created": "2026-03-02T18:02:20.237000Z",
  "date_modified": "2026-03-02T18:02:20.237000Z",
  "file_hash": "efa527b308f8c3f96b767f3fa6351cb070e3f4c68c7d1b774c8c12339e424b6b",
  "private": false,
  "record": {
    "abstract": "We present a new method for the solution of the behavior of an ensemble of\nqubits in a random time-dependent external field. The forward evolution in time\nis governed by a transfer matrix. The elements of this matrix determine the\nvarious decoherence times. The method provides an exact solution in cases where\nthe noise is piecewise constant in time. We show that it applies, for example,\nto a realistic model of decoherence of electron spins in semiconductors.\nResults are obtained for the non-perturbative regimes of the models, and we see\na transition from weak relaxation to overdamped behavior as a function of noise\nanisotropy.",
    "arxiv_id": "quant-ph/0511021",
    "authors": [
      "Diu Nghiem",
      "Robert Joynt"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.73.032333",
    "journal_ref": "Phys. Rev. A 73, 032333 (2006)",
    "title": "Exact solution of qubit decoherence models by a transfer matrix method",
    "url": "https://arxiv.org/abs/quant-ph/0511021"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "796c8af1-75ff-406c-bdc5-a30a2996fd07",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}