{
  "annotation_id": "4cf283e8-a4d2-4b7a-ad14-694ec1f3baed",
  "date_created": "2026-03-02T18:02:06.990000Z",
  "date_modified": "2026-03-02T18:02:06.990000Z",
  "file_hash": "1492b025a8058dabf74987b0900f08b35fdace745afc5bb05c9183acbc5d8b41",
  "private": false,
  "record": {
    "abstract": "We show that private shared reference frames can be used to perform private\nquantum and private classical communication over a public quantum channel. Such\nframes constitute a novel type of private shared correlation (distinct from\nprivate classical keys or shared entanglement) useful for cryptography. We\npresent optimally efficient schemes for private quantum and classical\ncommunication given a finite number of qubits transmitted over an insecure\nchannel and given a private shared Cartesian frame and/or a private shared\nreference ordering of the qubits. We show that in this context, it is useful to\nintroduce the concept of a decoherence-full subsystem, wherein every state is\nmapped to the completely mixed state under the action of the decoherence.",
    "arxiv_id": "quant-ph/0403161",
    "authors": [
      "Stephen D. Bartlett",
      "Terry Rudolph",
      "Robert W. Spekkens"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.70.032307",
    "journal_ref": "Phys. Rev. A 70, 032307 (2004)",
    "title": "Decoherence-full subsystems and the cryptographic power of a private   shared reference frame",
    "url": "https://arxiv.org/abs/quant-ph/0403161"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e96c301e-ba4a-4e5c-85ca-5c17f087a17c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}