{
  "id": "quant-ph/0703142",
  "version": "v2",
  "published": "2007-03-15T20:30:38.000Z",
  "updated": "2008-03-06T22:51:18.000Z",
  "title": "Correlated errors can lead to better performance of quantum codes",
  "authors": [
    "A. Shabani"
  ],
  "comment": "5 pages, 3 figures. Replaced by the published version. Title changed",
  "journal": "Phys. Rev. A 77, 022323 (2008)",
  "doi": "10.1103/PhysRevA.77.022323",
  "categories": [
    "quant-ph"
  ],
  "abstract": "A formulation for evaluating the performance of quantum error correcting codes for a general error model is presented. In this formulation, the correlation between errors is quantified by a Hamiltonian description of the noise process. We classify correlated errors using the system-bath interaction: local versus nonlocal and two-body versus many-body interactions. In particular, we consider Calderbank-Shor-Steane codes and observe a better performance in the presence of correlated errors depending on the timing of the error recovery. We also find this timing to be an important factor in the design of a coding system for achieving higher fidelities.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-03-06T22:51:18.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "correlated errors",
      "better performance",
      "quantum codes",
      "quantum error correcting codes",
      "general error model"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}