{
  "annotation_id": "32ff179f-3655-4bdc-9940-a83368d3e183",
  "date_created": "2026-03-02T18:02:00.264000Z",
  "date_modified": "2026-03-02T18:02:00.264000Z",
  "file_hash": "76617723281792046266f9a951cae19e2b61be32139c58fc7c4c3ac6e7e8489b",
  "private": false,
  "record": {
    "abstract": "We study the emergence of objective properties in open quantum systems. In\nour analysis, the environment is promoted from a passive role of reservoir\nselectively destroying quantum coherence, to an active role of amplifier\nselectively proliferating information about the system. We show that only\npreferred pointer states of the system can leave a redundant and therefore\neasily detectable imprint on the environment. Observers who--as it is almost\nalways the case--discover the state of the system indirectly (by probing a\nfraction of its environment) will find out only about the corresponding pointer\nobservable. Many observers can act in this fashion independently and without\nperturbing the system: they will agree about the state of the system. In this\noperational sense, preferred pointer states exist objectively.",
    "arxiv_id": "quant-ph/0307229",
    "authors": [
      "Harold Ollivier",
      "David Poulin",
      "Wojciech H. Zurek"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.93.220401",
    "journal_ref": "Phys. Rev. Lett. 93, 220401 (2004)",
    "title": "Objective properties from subjective quantum states: Environment as a   witness",
    "url": "https://arxiv.org/abs/quant-ph/0307229"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "516f3731-fd16-4f03-a132-de25f75dc803",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}