{
  "id": "2104.11909",
  "version": "v1",
  "published": "2021-04-24T08:22:57.000Z",
  "updated": "2021-04-24T08:22:57.000Z",
  "title": "Quantum Disturbance without State Change: Defense of State-Dependent Error-Disturbance Relations",
  "authors": [
    "Masanao Ozawa"
  ],
  "comment": "6 pages, 1 figure",
  "categories": [
    "quant-ph"
  ],
  "abstract": "The uncertainty principle states that a measurement inevitably disturbs the system, while it is often supposed that a quantum system is not disturbed without state change. Korzekwa, Jennings, and Rudolph [Phys. Rev. A 89, 052108 (2014)] pointed out a conflict between those two views, and concluded that state-dependent formulations of error-disturbance relations are untenable. Here, we reconcile the conflict by showing that a quantum system is disturbed without state change, in favor of the recently obtained universally valid state-dependent error-disturbance relations.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-04-24T08:22:57.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "state change",
      "quantum disturbance",
      "quantum system",
      "universally valid state-dependent error-disturbance relations",
      "uncertainty principle states"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}