{
  "annotation_id": "2123d7c0-137d-43e4-8ef6-4e6ce8a1ab5e",
  "date_created": "2026-03-02T18:02:27.299000Z",
  "date_modified": "2026-03-02T18:02:27.299000Z",
  "file_hash": "8043de35b21ed92a0676520e27fad7af489164360ed531088d21e11885858402",
  "private": false,
  "record": {
    "abstract": "We introduce, and determine decoherence for, a wide class of non-trivial\nquantum spin baths which embrace Ising, XY and Heisenberg universality classes\ncoupled to a two-level system. For the XY and Ising universality classes we\nprovide an exact expression for the decay of the loss of coherence beyond the\ncase of a central spin coupled uniformly to all the spins of the baths which\nhas been discussed so far in the literature. In the case of the Heisenberg spin\nbath we study the decoherence by means of the time-dependent density matrix\nrenormalization group. We show how these baths can be engineered, by using\natoms in optical lattices.",
    "arxiv_id": "quant-ph/0605051",
    "authors": [
      "Davide Rossini",
      "Tommaso Calarco",
      "Vittorio Giovannetti",
      "Simone Montangero",
      "Rosario Fazio"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.other"
    ],
    "doi": "10.1088/1751-8113/40/28/S12",
    "journal_ref": "J. Phys. A: Math. Theor. 40 (2007) 8033-8040",
    "title": "Decoherence by engineered quantum baths",
    "url": "https://arxiv.org/abs/quant-ph/0605051"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d96c5184-60d6-4ea8-b395-e7acfaab8a93",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}