{
  "annotation_id": "f230909f-274a-42a4-b6e4-26fd44ae73f8",
  "date_created": "2026-03-02T18:01:38.496000Z",
  "date_modified": "2026-03-02T18:01:38.496000Z",
  "file_hash": "9305a77d81f20af176b14c92667897afd95be2f3b3c98ae5d932703d4b63c011",
  "private": false,
  "record": {
    "abstract": "We consider the problem of reversing quantum dynamics, with the goal of preserving an initial state\u0027s quantum entanglement or classical correlation with a reference system. We exhibit an approximate reversal operation, adapted to the initial density operator and the ``noise\u0027\u0027 dynamics to be reversed. We show that its error in preserving either quantum or classical information is no more than twice that of the optimal reversal operation. Applications to quantum algorithms and information transmission are discussed.",
    "arxiv_id": "quant-ph/0004088",
    "authors": [
      "H. Barnum",
      "E. Knill"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1063/1.1459754",
    "journal_ref": "Journal of Mathematical Physics 43 (2002) 2097-2106",
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Reversing quantum dynamics with near-optimal quantum and classical fidelity",
    "url": "https://arxiv.org/abs/quant-ph/0004088"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9e29836d-0df2-436b-99db-9cd746a03ecb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}