{
  "id": "1711.01495",
  "version": "v1",
  "published": "2017-11-04T21:22:49.000Z",
  "updated": "2017-11-04T21:22:49.000Z",
  "title": "Indistinguishability of quantum states and rotation counting",
  "authors": [
    "Dmitri V. Averin",
    "Christoph Bruder"
  ],
  "comment": "5 pages, 3 embedded figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.quant-gas",
    "quant-ph"
  ],
  "abstract": "We propose a quantum system in which the winding number of rotations of a particle around a ring can be monitored and emerges as a physical observable. We explicitly analyze the situation when, as a result of the monitoring of the winding number, the period of the orbital motion of the particle is extended to $n>1$ full rotations, which leads to changes in the energy spectrum and in all observable properties. In particular, we show that in this case, the usual magnetic flux period $\\Phi_0=h/q$ of the Aharonov-Bohm effect is reduced to $\\Phi_0/n$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-11-04T21:22:49.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum states",
      "rotation counting",
      "indistinguishability",
      "usual magnetic flux period",
      "winding number"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}