{
  "annotation_id": "5077d191-cc21-4af2-8d21-8f60a0052850",
  "date_created": "2026-03-02T18:02:10.340000Z",
  "date_modified": "2026-03-02T18:02:10.340000Z",
  "file_hash": "df739442db7981bc142d5ffeed63941819da42dfea83d0cb643047159cd972c9",
  "private": false,
  "record": {
    "abstract": "We derive the general structure of noiseless subsystems for optical radiation\ncontained in a sequence of pulses undergoing collective depolarization in an\noptical fiber. This result is used to identify optimal ways to implement\nquantum communication over a collectively depolarizing channel, which in\ngeneral combine various degrees of freedom, such as polarization and phase,\ninto joint hybrid schemes for protecting quantum coherence.",
    "arxiv_id": "quant-ph/0410077",
    "authors": [
      "Jonathan L. Ball",
      "Konrad Banaszek"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/39/1/L01",
    "journal_ref": "J. Phys. A: Math. Gen. 39, L1-L7 (2006)",
    "title": "Hybrid noiseless subsystems for quantum communication over optical   fibers",
    "url": "https://arxiv.org/abs/quant-ph/0410077"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6cd85a7b-c7e9-4310-8d46-2f243d86bf2c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}