{
  "annotation_id": "0f12de6b-8416-497b-be28-46bdd86db278",
  "date_created": "2026-03-02T18:02:30.342000Z",
  "date_modified": "2026-03-02T18:02:30.342000Z",
  "file_hash": "871f8ffee9299719901dd6f4d6e58f6286306eb0eb7b93f30e14c3246e84e112",
  "private": false,
  "record": {
    "abstract": "Starting from the observation that reversible processes cannot increase the\npurity of any input state, we study deterministic physical processes, which map\na set of states to a set of pure states. Such a process must map any state to\nthe same pure output, if purity is demanded for the input set of all states.\nBut otherwise, when the input set is restricted, it is possible to find\nnon-trivial purifying processes. For the most restricted case of only two input\nstates, we completely characterize the output of any such map. We furthermore\nconsider maps, which combine the property of purity and reversibility on a set\nof states, and we derive necessary and sufficient conditions on sets, which\npermit such processes.",
    "arxiv_id": "quant-ph/0608053",
    "authors": [
      "Matthias Kleinmann",
      "Hermann Kampermann",
      "Tim Meyer",
      "Dagmar Bruss"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1007/s00340-006-2515-4",
    "journal_ref": "Appl. Phys. B 86, 371 (2007)",
    "title": "Purifying and Reversible Physical Processes",
    "url": "https://arxiv.org/abs/quant-ph/0608053"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "21a44ca6-64a8-4cdc-be08-95c092e5ebad",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}