{
  "annotation_id": "96459ea3-0181-4367-ad24-c9777b5ce833",
  "date_created": "2026-03-02T18:01:42.482000Z",
  "date_modified": "2026-03-02T18:01:42.482000Z",
  "file_hash": "eb7706db26e8fd6cd8ebea5885e4dd5806bb04597c180b091e17bd99f6bf7fc8",
  "private": false,
  "record": {
    "abstract": "We show that entanglement can always arise in the interaction of an\narbitrarily large system in any mixed state with a single qubit in a pure\nstate. This small initial purity is enough to enforce entanglement even when\nthe total entropy is close to maximum. We demonstrate this feature using the\nJaynes-Cummings interaction of a two level atom in a pure state with a field in\na thermal state at an arbitrarily high temperature. We find the time and\ntemperature variation of a lower bound on the amount of entanglement produced\nand study the classical correlations quantified by the mutual information.",
    "arxiv_id": "quant-ph/0103063",
    "authors": [
      "S. Bose",
      "I. Fuentes-Guridi",
      "P. L. Knight",
      "V. Vedral"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.87.050401",
    "journal_ref": "Phys. Rev. Lett. 87, 050401 (2001); Phys. Rev. Lett. 87, 279901\n  (2001)",
    "title": "Subsystem Purity as an Enforcer of Entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0103063"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "875a6aaa-6959-4b45-89cf-28c4a308f724",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}