{
  "id": "1710.03950",
  "version": "v1",
  "published": "2017-10-11T07:53:18.000Z",
  "updated": "2017-10-11T07:53:18.000Z",
  "title": "Classicality from quantumness revealed by disturbance-free measurement",
  "authors": [
    "Sang Min Lee",
    "Minsu Kim",
    "Heonoh Kim",
    "Han Seb Moon",
    "Sang Wook Kim"
  ],
  "categories": [
    "quant-ph"
  ],
  "abstract": "We propose an asymptotic disturbance-free measurement using the so-called weak-value scheme,where the weakly measured quantum system is measured for a second time, to confirm that it is disturbance-free; moreover, the probability of obtaining the non-disturbed state must approach one. We show that the weak-measurement outcomes of the Bell state post-selected in this manner exhibit classical behavior in the sense that they satisfy the Clauser-Horne-Shimony-Holt inequality. However, the inequality is violated if all outcomes without post-selection are considered. We experimentally confirm our idea by performing joint weak measurement of polarization-entangled photon-pairs and subsequent fiber-based Bell-state measurement.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-10-11T07:53:18.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "classicality",
      "quantumness",
      "asymptotic disturbance-free measurement",
      "subsequent fiber-based bell-state measurement",
      "performing joint weak measurement"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}