{
  "id": "quant-ph/0508228",
  "version": "v2",
  "published": "2005-08-30T17:14:00.000Z",
  "updated": "2006-07-24T16:48:35.000Z",
  "title": "Decoherence by Correlated Noise and Quantum Error Correction",
  "authors": [
    "E. Novais",
    "Harold U. Baranger"
  ],
  "comment": "4 pages, 1 figure, Phys. Rev. Lett. in press",
  "journal": "Phys. Rev. Lett. 97, 040501 (2006).",
  "doi": "10.1103/PhysRevLett.97.040501",
  "categories": [
    "quant-ph",
    "cond-mat.mes-hall"
  ],
  "abstract": "We study the decoherence of a quantum computer in an environment which is inherently correlated in time and space. We first derive the nonunitary time evolution of the computer and environment in the presence of a stabilizer error correction code, providing a general way to quantify decoherence for a quantum computer. The general theory is then applied to the spin-boson model. Our results demonstrate that effects of long-range correlations can be systematically reduced by small changes in the error correction codes.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2006-07-24T16:48:35.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum error correction",
      "correlated noise",
      "decoherence",
      "quantum computer",
      "stabilizer error correction code"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}