{
  "annotation_id": "c3efa556-a742-4fce-a153-293fadc93d12",
  "date_created": "2026-03-02T18:01:48.901000Z",
  "date_modified": "2026-03-02T18:01:48.901000Z",
  "file_hash": "bd27af70154e6bbf6c3aafe6a638a7e1bc5de74f9d8981fb85cf6db1c604e863",
  "private": false,
  "record": {
    "abstract": "A classical random variable can be faithfully compressed into a sequence of\nbits with its expected length lies within one bit of Shannon entropy. We\ngeneralize this variable-length and faithful scenario to the general quantum\nsource producing mixed states $\\rho_i$ with probability $p_i$. In contrast to\nthe classical case, the optimal compression rate in the limit of large block\nlength differs from the one in the fixed-length and asymptotically faithful\nscenario. The amount of this gap is interpreted as the genuinely quantum part\nbeing incompressible in the former scenario.",
    "arxiv_id": "quant-ph/0203045",
    "authors": [
      "Masato Koashi",
      "Nobuyuki Imoto"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.89.097904",
    "title": "Quantum information is incompressible without errors",
    "url": "https://arxiv.org/abs/quant-ph/0203045"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "183c2f21-7eab-44c8-80cf-e09bf97f14de",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}