{
  "annotation_id": "d0a5f09a-4999-4728-9e2b-f9a27b843255",
  "date_created": "2026-03-02T18:02:03.117000Z",
  "date_modified": "2026-03-02T18:02:03.117000Z",
  "file_hash": "8805ebf31fc9b4adbac2a4981144849a7bbcf0a28e96204402318570290eed4c",
  "private": false,
  "record": {
    "abstract": "We refine the notion of concurrence in this paper by a redefinition of the\nconcept. The new definition is simpler, computationally straight forward, and\nallows the concurrence to be directly read off from the state. It has all the\npositive features of the definiton given by Wootters over and above which it\ncan discriminate between different systems to which the Wootters prescription\nwould assign the same value. Finally, the definiton leads to a natural\nextension of the notion to multiqubit concurrence, which we illustrate with\nexamples from quantum error correction codes.",
    "arxiv_id": "quant-ph/0309047",
    "authors": [
      "D. D. Bhaktavatsala Rao",
      "V. Ravishankar"
    ],
    "categories": [
      "quant-ph",
      "cond-mat",
      "hep-th"
    ],
    "title": "A redefinition of Concurrence and its generalisation to bosonic   subsystems of N qubit systems",
    "url": "https://arxiv.org/abs/quant-ph/0309047"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "69b56835-c11d-4d65-ad2e-fc8e5ff11a33",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}