{
  "id": "1806.06128",
  "version": "v1",
  "published": "2018-06-15T21:15:16.000Z",
  "updated": "2018-06-15T21:15:16.000Z",
  "title": "Characterizing $d-$dimensional quantum channels by means of quantum process tomography",
  "authors": [
    "Juan José Miguel Varga",
    "Lorena Rebón",
    "Quimey Pears Stefano",
    "Claudio Iemmi"
  ],
  "categories": [
    "quant-ph"
  ],
  "abstract": "In this work we propose a simple optical architecture, based on phase-only programmable spatial light modulators, in order to characterize general processes on photonic spatial quantum systems in a $d>2$ Hilbert space. We demonstrate the full reconstruction of typical noises affecting quantum computing, as amplitude shifts, phase shifts, and depolarizing channel in dimension $d=5$. We have also reconstructed simulated atmospheric turbulences affecting a free-space transmission of qudits in dimension $d=4$. In each case, quantum process tomography (QPT) was performed in order to obtain the matrix $\\chi$ that fully describe the corresponding quantum channel, $\\mathcal{E}$. Fidelities between the states experimentally obtained after go through the channel and the expected ones are above $97\\%$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-06-15T21:15:16.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum process tomography",
      "dimensional quantum channels",
      "programmable spatial light modulators",
      "simulated atmospheric turbulences affecting",
      "noises affecting quantum computing"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}