{
  "id": "quant-ph/0405012",
  "version": "v1",
  "published": "2004-05-03T14:54:21.000Z",
  "updated": "2004-05-03T14:54:21.000Z",
  "title": "Effect of ancilla's structure on quantum error correction using the 7-qubit Calderbank-Shor-Steane code",
  "authors": [
    "Pedro J. Salas",
    "Angel L. Sanz"
  ],
  "comment": "24 pages, 10 Figures included. Accepted in Phys. Rev. A 2004",
  "doi": "10.1103/PhysRevA.69.052322",
  "categories": [
    "quant-ph"
  ],
  "abstract": "In this work we discuss the ability of different types of ancillas to control the decoherence of a qubit interacting with an environment. The error is introduced into the numerical simulation via a depolarizing isotropic channel. After the correction we calculate the fidelity as a quality criterion for the qubit recovered. We observe that a recovery method with a three-qubit ancilla provides reasonable good results bearing in mind its economy. If we want to go further, we have to use fault-tolerant ancillas with a high degree of parallelism, even if this condition implies introducing new ancilla verification qubits.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-05-03T14:54:21.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum error correction",
      "ancillas structure",
      "calderbank-shor-steane code",
      "ancilla verification qubits",
      "high degree"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 24,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}