{
  "annotation_id": "e1584433-1a8f-4ec1-9c62-7aba0e599506",
  "date_created": "2026-03-02T18:02:12.914000Z",
  "date_modified": "2026-03-02T18:02:12.914000Z",
  "file_hash": "c318744e733575748f0075c51633be24aeffd6636a894ede05976cd2749c4e98",
  "private": false,
  "record": {
    "abstract": "We show that the Hilbert space of even number ($\\geq4$) of qubits can always\nbe decomposed as a direct sum of four orthogonal subspaces such that the\nnormalized projectors onto the subspaces are activable bound entangled (ABE)\nstates. These states also show a surprising recursive relation in the sense\nthat the states belonging to $2N+2$ qubits are Bell correlated to the states of\n$2N$ qubits; hence, we refer to these states as Bell-Correlated ABE (BCABE)\nstates. We also study the properties of noisy BCABE states and show that they\nare very similar to that of two qubit Bell-diagonal states.",
    "arxiv_id": "quant-ph/0411082",
    "authors": [
      "Somshubhro Bandyopadhyay",
      "Indrani Chattopadhyay",
      "Vwani P. Roychowdhury",
      "Debasis Sarkar"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.71.062317",
    "journal_ref": "Phys. Rev. A 71, 062317, (2005)",
    "title": "Bell-Correlated Activable Bound Entanglement in Multiqubit Systems",
    "url": "https://arxiv.org/abs/quant-ph/0411082"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "eb0f5231-f211-47d5-ad4b-b24b078ed58a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}