{
  "annotation_id": "b1071cd7-3fe9-4569-9d77-e3f6e00caa08",
  "date_created": "2026-03-02T18:01:45.135000Z",
  "date_modified": "2026-03-02T18:01:45.135000Z",
  "file_hash": "7d785c6eafd470a065851fff131f80ab779d574561507d251197ecba88c2cc78",
  "private": false,
  "record": {
    "abstract": "Using invariance of the $n$-th tensored state w.r.t. the $n$-th symmetric\ngroup, we propose a \u0027variable length\u0027 universal entanglement concentration\nwithout classical communication. Like variable length data compression,\narbitrary unknown states are concentrated into perfect Bell states and not\napproximate Bell states and the number of Bell states obtained is equal to the\noptimal rate asymptotically with the probability 1. One of the point of our\nscheme is that we need no classical communication at all. Using this method, we\ncan construct a universal teleportation and a universal dense coding.",
    "arxiv_id": "quant-ph/0109028",
    "authors": [
      "Masahito Hayashi",
      "Keiji Matsumoto"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Variable length universal entanglement concentration by local operations   and its application to teleportation and dense coding",
    "url": "https://arxiv.org/abs/quant-ph/0109028"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "45ccf156-676b-409f-893c-69161086bb6c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}