{
  "id": "0710.0980",
  "version": "v1",
  "published": "2007-10-04T11:03:50.000Z",
  "updated": "2007-10-04T11:03:50.000Z",
  "title": "Preparation of entangled states of two photons in several spatial modes",
  "authors": [
    "Karel Lemr",
    "Jaromir Fiurasek"
  ],
  "comment": "9 pages, 9 figures, REVTeX4",
  "journal": "Phys. Rev. A 77, 023802 (2008).",
  "doi": "10.1103/PhysRevA.77.023802",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We describe a protocol capable of preparing an arbitrary state of two photons in several spatial modes using pairs of photons generated by spontaneous parametric down-conversion, linear optical elements and single-photon detectors or post-selection. The protocol involves unitary and non-unitary transformations realizable by beam splitters and phase shifters. Non-unitary transformations are implemented by attenuation filters. The protocol contains several optimization capabilities with the goal of improving overall probability of its success. We also show how entangled two-photon states required for quantum computing with linear optics can be prepared using a very simple and feasible scheme.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-10-04T11:03:50.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "42.50.Dv",
      "03.67.-a"
    ],
    "keywords": [
      "spatial modes",
      "entangled states",
      "preparation",
      "non-unitary transformations",
      "linear optical elements"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "year": 2008,
      "month": "Feb",
      "volume": 77,
      "number": 2,
      "pages": "023802"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008PhRvA..77b3802L"
    }
  }
}