{
  "annotation_id": "707b4a0b-c36a-46fd-9784-91d83180780a",
  "date_created": "2026-03-02T18:02:06.992000Z",
  "date_modified": "2026-03-02T18:02:06.992000Z",
  "file_hash": "f8f86076013da4ac0577ee1c45990b1f57c2cec2967249ed68253aa7a4ee0b2c",
  "private": false,
  "record": {
    "abstract": "The minimum entropy output is computed for rotationally invariant quantum\nchannels acting on spin-1/2 and spin-1 systems. For the case of two parallel\nsuch channels and initial entangled (singlet) state the entropy of the output\nis higher then the doubled minimal entropy output of the single channel. This\ngives a certain moral support to the additivity hypothesis. Another related\nsimple function of the channel (minimum entropy gain) is shown to be additive\nin general.",
    "arxiv_id": "quant-ph/0402080",
    "authors": [
      "Robert Alicki"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Isotropic quantum spin channels and additivity questions",
    "url": "https://arxiv.org/abs/quant-ph/0402080"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "08a3747e-1a7c-498f-9040-2b1599f869c1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}