{
  "id": "1803.08855",
  "version": "v2",
  "published": "2018-03-23T16:01:46.000Z",
  "updated": "2018-11-06T15:46:36.000Z",
  "title": "Preparation of arbitrary quantum states with regular $P$~functions",
  "authors": [
    "B. Kühn",
    "W. Vogel"
  ],
  "comment": "13 pages, 7 figures",
  "journal": "Phys. Rev. A 98, 053807 (2018)",
  "doi": "10.1103/PhysRevA.98.053807",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We propose a quantum optical device to experimentally realize quantum processes, which perform the regularization of the---in general highly singular---Glauber-Sudarshan $P$~functions of arbitrary quantum states before their application and/or measurement. This allows us to produce a broad class of nonclassical states with regular $P$~functions, also called nonclassicality quasiprobabilities. For this purpose, the input states are combined on highly transmissive beam splitters with specific Gaussian or non-Gaussian classical states. We study both balanced and unbalanced homodyne detections for the direct sampling of the output states of the implemented processes, which requires no further regularization or state-reconstruction. By numerical simulations we demonstrate the feasibility of our approach and we outline the generalization to multimode light.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2018-11-06T15:46:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "arbitrary quantum states",
      "preparation",
      "the-in general highly singular-glauber-sudarshan",
      "input states",
      "regularization"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}