{
  "annotation_id": "b635bad6-6355-416e-85f6-aae1c9e720b1",
  "date_created": "2026-03-02T18:01:52.613000Z",
  "date_modified": "2026-03-02T18:01:52.613000Z",
  "file_hash": "f2e25e837a39308a896e797b4eb16485e374f849e94afc08a941c87256999b7f",
  "private": false,
  "record": {
    "abstract": "We find the necessary and sufficient condition under which two two-qubit\nmixed states can be purified into a pure maximally entangled state by local\noperations and classical communication. The optimal protocol for such\ntransformation is obtained. This result leads to a necessary and sufficient\ncondition for the exact purification of $n$ copies of a two-qubit state.",
    "arxiv_id": "quant-ph/0205107",
    "authors": [
      "Enric Jane"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Quant. Inf. Comp. 2, 348 (2002)",
    "title": "Purification of two-qubit mixed states",
    "url": "https://arxiv.org/abs/quant-ph/0205107"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "add239a9-c438-4044-8699-3da2549c53d0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}