{
  "annotation_id": "56ee524d-c244-4350-aa7d-760c3a27ea52",
  "date_created": "2026-03-02T18:02:09.948000Z",
  "date_modified": "2026-03-02T18:02:09.948000Z",
  "file_hash": "51897c923a294260936de8fe511749105489e5ac94fde8b17689724f56481c82",
  "private": false,
  "record": {
    "abstract": "Error filtration is a method for encoding the quantum state of a single\nparticle into a higher dimensional Hilbert space in such a way that it becomes\nless sensitive to phase noise. We experimentally demonstrate this method by\ndistributing a secret key over an optical fiber whose noise level otherwise\nprecludes secure quantum key distribution. By filtering out the phase noise, a\nbit error rate of 15.3% +/- 0.1%, which is beyond the security limit, can be\nreduced to 10.6% +/- 0.1%, thereby guaranteeing the cryptographic security.",
    "arxiv_id": "quant-ph/0407031",
    "authors": [
      "L. P. Lamoureux",
      "E. Brainis",
      "N. Cerf",
      "Ph. Emplit",
      "M. Haelterman",
      "S. Massar"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.94.230501",
    "journal_ref": "Physical Review Letters 94, 230501 (2005)",
    "title": "Experimental quantum key distribution over highly noisy channels",
    "url": "https://arxiv.org/abs/quant-ph/0407031"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fd92c3cb-0ad7-4266-83be-281d7c5fc7cb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}