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{
  "abstracts": [
    {
      "content": "We provide a class of optimal nondecomposable entanglement witnesses for 4N x\n4N composite quantum systems or, equivalently, a new construction of\nnondecomposable positive maps in the algebra of 4N x 4N complex matrices. This\nconstruction provides natural generalization of the Robertson map. It is shown\nthat their structural physical approximations give rise to entanglement\nbreaking channels.",
      "lang": "en",
      "mimetype": "text/plain",
      "sha1": "5f9fce982c3d66731bf671c10001e741a875d053"
    }
  ],
  "contribs": [
    {
      "index": 0,
      "raw_name": "Dariusz Chruscinski",
      "role": "author"
    },
    {
      "index": 1,
      "raw_name": "Justyna Pytel",
      "role": "author"
    }
  ],
  "ext_ids": {
    "arxiv": "1006.3059v1"
  },
  "extra": {
    "arxiv": {
      "base_id": "1006.3059",
      "categories": [
        "quant-ph",
        "math-ph",
        "math.MP"
      ],
      "comments": "6 pages",
      "journal_ref": "Phys. Rev. A 82, 052310 (2010)"
    }
  },
  "ident": "qmtuvezglnembenfilx7b6ecae",
  "language": "en",
  "license_slug": "ARXIV-1.0",
  "refs": [],
  "release_date": "2010-06-15",
  "release_stage": "submitted",
  "release_type": "article",
  "release_year": 2010,
  "revision": "b9c8fd47-c5e1-4f41-84cb-675c4a03080c",
  "state": "active",
  "title": "Constructing optimal entanglement witnesses. II",
  "version": "v1",
  "work_id": "5mrqtpzqwvfdjefcrkult3wryy"
}