{
  "id": "1010.2566",
  "version": "v2",
  "published": "2010-10-13T03:52:19.000Z",
  "updated": "2011-03-31T13:53:06.000Z",
  "title": "Entanglement-Enhanced Classical Communication over a Noisy Classical Channel",
  "authors": [
    "R. Prevedel",
    "Y. Lu",
    "W. Matthews",
    "R. Kaltenbaek",
    "K. J. Resch"
  ],
  "comment": "5 pages",
  "journal": "Phys. Rev. Lett. 106, 110505 (2011)",
  "doi": "10.1103/PhysRevLett.106.110505",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We present and experimentally demonstrate a communication protocol that employs shared entanglement to reduce errors when sending a bit over a particular noisy classical channel. Specifically, it is shown that, given a single use of this channel, one can transmit a bit with higher success probability when sender and receiver share entanglement compared to the best possible strategy when they do not. The experiment is realized using polarization-entangled photon pairs, whose quantum correlations play a critical role in both the encoding and decoding of the classical message. Experimentally, we find that a bit can be successfully transmitted with probability 0.891 \\pm 0.002, which is close to the theoretical maximum of (2 + 2^-1/2)/3 \\simeq 0.902 and is significantly above the optimal classical strategy, which yields 5/6 \\simeq 0.833.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-03-31T13:53:06.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.67.Hk",
      "03.67.Bg",
      "89.70.Kn"
    ],
    "keywords": [
      "noisy classical channel",
      "entanglement-enhanced classical communication",
      "quantum correlations play",
      "higher success probability",
      "communication protocol"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2011,
      "month": "Mar",
      "volume": 106,
      "number": 11,
      "pages": 110505
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011PhRvL.106k0505P"
    }
  }
}