{
  "annotation_id": "1e7852c5-2cdd-421a-9175-8abb5291b2fb",
  "date_created": "2026-03-02T18:02:12.849000Z",
  "date_modified": "2026-03-02T18:02:12.849000Z",
  "file_hash": "0b60b36c45118dd8ab9afc5dbb27fe30896ebaeaf617c051467567d54d0b4418",
  "private": false,
  "record": {
    "abstract": "Perfect state transfer is possible in modulated spin chains, imperfections\nhowever are likely to corrupt the state transfer. We study the robustness of\nthis quantum communication protocol in the presence of disorder both in the\nexchange couplings between the spins and in the local magnetic field. The\ndegradation of the fidelity can be suitably expressed, as a function of the\nlevel of imperfection and the length of the chain, in a scaling form. In\naddition the time signal of fidelity becomes fractal. We further characterize\nthe state transfer by analyzing the spectral properties of the Hamiltonian of\nthe spin chain.",
    "arxiv_id": "quant-ph/0502148",
    "authors": [
      "Gabriele De Chiara",
      "Davide Rossini",
      "Simone Montangero",
      "Rosario Fazio"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.other"
    ],
    "doi": "10.1103/PhysRevA.72.012323",
    "journal_ref": "Phys. Rev. A 72, 012323 (2005)",
    "title": "From perfect to fractal transmission in spin chains",
    "url": "https://arxiv.org/abs/quant-ph/0502148"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ba34b7bf-2636-4530-9d66-04bddd1bfff4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}