{
  "annotation_id": "6cfdf658-cd80-40ca-837a-2f967d7c760b",
  "date_created": "2026-03-02T18:02:27.719000Z",
  "date_modified": "2026-03-02T18:02:27.719000Z",
  "file_hash": "8598067c6c46d5d057b11165863614aca6da7f5634c338aa37fbaaf6de3a4770",
  "private": false,
  "record": {
    "abstract": "We develop a strong and computationally simple entanglement criterion. The\ncriterion is based on an elementary positive map Phi which operates on state\nspaces with even dimension N \u003e= 4. It is shown that Phi detects many entangled\nstates with positive partial transposition (PPT) and that it leads to a class\nof optimal entanglement witnesses. This implies that there are no other\nwitnesses which can detect more entangled PPT states. The map Phi yields a\nsystematic method for the explicit construction of high-dimensional manifolds\nof bound entangled states.",
    "arxiv_id": "quant-ph/0605036",
    "authors": [
      "Heinz-Peter Breuer"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.97.080501",
    "journal_ref": "Phys. Rev. Lett. 97, 080501 (2006)",
    "title": "Optimal entanglement criterion for mixed quantum states",
    "url": "https://arxiv.org/abs/quant-ph/0605036"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f42f486f-4e2d-4bfc-af41-de4b57a591ea",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}