{
  "id": "1205.6135",
  "version": "v1",
  "published": "2012-05-28T14:58:08.000Z",
  "updated": "2012-05-28T14:58:08.000Z",
  "title": "Irreversibility, Information and Randomness in Quantum Measurements",
  "authors": [
    "S. N. Mayburov"
  ],
  "comment": "13 pages, Talk given at 'Irreversibility in Classical and Quantum Systems' conference, Moscow, december 2011, to appear in proceedings",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Irreversibility in quantum measurements is considered from the point of quantum information theory. For that purpose the information transfer between the measured object S and measuring system O is analyzed. It's found that due to the principal constraints of quantum-mechanical origin, the information about the purity of S state isn't transferred to O during the measurement of arbitraryS observable V. Consequently O can't discriminate the pure and mixed S ensembles with the same <V>. As the result, the random outcomes should be detected by O in V measurement for S pure ensemble of V eigenstate superposition. It's shown that the outcome probabilties obey to Born rule. The influence of O decoherence by its environment is studied, however the account of its effects doesn't change these results principally.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-05-28T14:58:08.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum measurements",
      "irreversibility",
      "randomness",
      "quantum information theory",
      "outcome probabilties obey"
    ],
    "tags": [
      "conference paper"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012arXiv1205.6135M"
    }
  }
}