{
  "annotation_id": "e8a457bd-e835-457c-8306-20d2cd8a220c",
  "date_created": "2026-03-02T18:02:23.619000Z",
  "date_modified": "2026-03-02T18:02:23.619000Z",
  "file_hash": "82060eed20a0896266d7feb55c16ed8047438211e915ea11d60b2059dc5bfece",
  "private": false,
  "record": {
    "abstract": "We construct a new class of PPT states for bipartite \"d x d\" systems. This\nclass is invariant under the maximal commutative subgroup of U(d) and contains\nas special cases almost all known examples of PPT states. Theses states may be\nused to test the atomic property of positive maps which are crucial in studying\nquantum entanglement.",
    "arxiv_id": "quant-ph/0602076",
    "authors": [
      "Dariusz Chruscinski",
      "Andrzej Kossakowski"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.022308",
    "journal_ref": "Phys. Rev. A 74, 022308 (2006)",
    "title": "A new class of states with positive partial transposition",
    "url": "https://arxiv.org/abs/quant-ph/0602076"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d78402fe-c789-4e3c-be77-dc5b74100922",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}