{
  "id": "0808.2287",
  "version": "v2",
  "published": "2008-08-17T09:30:36.000Z",
  "updated": "2009-01-14T09:07:55.000Z",
  "title": "Bell inequality for qubits based on the Cauchy-Schwarz inequality",
  "authors": [
    "Jing-Ling Chen",
    "Dong-Ling Deng"
  ],
  "comment": "4 pages. Accepted for publication in Physical Review A",
  "journal": "Physical Review A 79, 012115 (2009)",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We develop a systematic approach to establish Bell inequalities for qubits based on the Cauchy-Schwarz inequality. We also use the concept of distinct \"roots\" of Bell function to classify some well-known Bell inequalities for qubits. As applications of the approach, we present three new and tight Bell inequalities for four and three qubits, respectively.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2009-01-14T09:07:55.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.65.Ud",
      "03.65.Ta",
      "03.67.Mn"
    ],
    "keywords": [
      "bell inequality",
      "cauchy-schwarz inequality",
      "well-known bell inequalities",
      "tight bell inequalities",
      "establish bell inequalities"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "doi": "10.1103/PhysRevA.79.012115",
      "year": 2009,
      "month": "Jan",
      "volume": 79,
      "number": 1,
      "pages": "012115"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvA..79a2115C"
    }
  }
}