{
  "annotation_id": "e9b3f9ba-0b21-454f-96bb-862d07d12dda",
  "date_created": "2026-03-02T18:02:13.574000Z",
  "date_modified": "2026-03-02T18:02:13.574000Z",
  "file_hash": "dbf59af3993b80de8a4db9ce7d374e519347b988f8f1c2ff1c6de7b064a1343e",
  "private": false,
  "record": {
    "abstract": "It is proved that there exist subspaces of bipartite tensor product spaces\nthat have no orthonormal bases that can be perfectly distinguished by means of\nLOCC protocols. A corollary of this fact is that there exist quantum channels\nhaving sub-optimal classical capacity even when the receiver may communicate\nclassically with a third party that represents the channel\u0027s environment.",
    "arxiv_id": "quant-ph/0503092",
    "authors": [
      "John Watrous"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.95.080505",
    "title": "Bipartite subspaces having no LOCC-distinguishable bases",
    "url": "https://arxiv.org/abs/quant-ph/0503092"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a83bbfe5-94b2-4ff0-bbbe-55bd994cee98",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}