{
  "annotation_id": "37890797-1396-4fa4-baae-ec522f7098d9",
  "date_created": "2026-03-02T18:02:12.911000Z",
  "date_modified": "2026-03-02T18:02:12.911000Z",
  "file_hash": "e273670e8fcd6398454417f23fbc05600522a2509f080bb3f083453a466a2efb",
  "private": false,
  "record": {
    "abstract": "We investigate the decoherence process for a quantum register composed of N\nqubits coupled to an environment. We consider an environment composed of one\ncommon phonon bath and several electronic baths. This environment is relevant\nto the implementation of a charge based solid-state quantum computer. We\nexplicitly compute the time evolution of all off-diagonal terms of the\nregister\u0027s reduced density matrix. We find that in realistic configurations,\n\"superdecoherence\" and \"decoherence free subspaces\" do not exist for an N-qubit\nsystem. This means that all off-diagonal terms decay like exp(-q(t)N), where\nq(t) is of the same order as the decay function of a single qubit.",
    "arxiv_id": "quant-ph/0411086",
    "authors": [
      "B. Ischi",
      "M. Hilke",
      "M. Dube"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.mes-hall"
    ],
    "doi": "10.1103/PhysRevB.71.195325",
    "journal_ref": "Phys. Rev. B 71, 195325 (2005)",
    "title": "Decoherence in a N-qubit solid-state quantum computer",
    "url": "https://arxiv.org/abs/quant-ph/0411086"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "72121bb1-9586-4250-8e64-629ccd128430",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}