{
  "id": "1205.0619",
  "version": "v1",
  "published": "2012-05-03T05:41:30.000Z",
  "updated": "2012-05-03T05:41:30.000Z",
  "title": "Weak measurement with orthogonal pre-selection and post-selection",
  "authors": [
    "Shengshi Pang",
    "Shengjun Wu",
    "Zeng-Bing Chen"
  ],
  "journal": "Phys. Rev. A 86, 022112 (2012)",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Weak measurement is a novel quantum measurement scheme, which is usually characterized by the weak value formalism. To guarantee the validity of the weak value formalism, the fidelity between the pre-selection and the post-selection should not be too small generally. In this work, we study the weak measurement on a qubit system with exactly or asymptotically orthogonal pre- and post-selections. We shall establish a general rigorous framework for the weak measurement beyond the weak value formalism, and obtain the average output of a weak measurement when the pre- and post-selections are exactly orthogonal. We shall also study the asymptotic behavior of a weak measurement in the limiting process that the pre- and post-selections tend to be orthogonal.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-05-03T05:41:30.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.65.Ta",
      "03.65.Ca",
      "42.50.Dv"
    ],
    "keywords": [
      "weak measurement",
      "weak value formalism",
      "orthogonal pre-selection",
      "novel quantum measurement scheme",
      "qubit system"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "doi": "10.1103/PhysRevA.86.022112",
      "year": 2012,
      "month": "Aug",
      "volume": 86,
      "number": 2,
      "pages": "022112"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012PhRvA..86b2112P"
    }
  }
}