{
  "annotation_id": "c167bb29-b66b-4b2c-b3e4-901476473e65",
  "date_created": "2026-03-02T18:02:27.605000Z",
  "date_modified": "2026-03-02T18:02:27.605000Z",
  "file_hash": "e4fa685fa681fec8c6d7a89960cbeb6caa478c367f3d9d2309c949a4d884f55a",
  "private": false,
  "record": {
    "abstract": "In this paper, a purification protocol is presented and its performance is\nproven to be optimal when applied to a particular subset of graph states that\nare subject to local Z-noise. Such mixed states can be produced by bringing a\nsystem into thermal equilibrium, when it is described by a Hamiltonian which\nhas a particular graph state as its unique ground state. From this protocol, we\nderive the exact value of the critical temperature above which purification is\nimpossible, as well as the related optimal purification rates. A possible\nsimulation of graph Hamiltonians is proposed, which requires only bipartite\ninteractions and local magnetic fields, enabling the tuning of the system\ntemperature.",
    "arxiv_id": "quant-ph/0606177",
    "authors": [
      "Alastair Kay",
      "Jiannis K. Pachos",
      "Wolfgang D\u00fcr",
      "Hans J. Briegel"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1367-2630/8/8/147",
    "journal_ref": "New J. Phys. 8 (2006) 147",
    "title": "Optimal purification of thermal graph states",
    "url": "https://arxiv.org/abs/quant-ph/0606177"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "076a609d-6304-4932-928e-ca7dee9a523b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}