{
  "annotation_id": "d8f95244-4e7f-42c5-9de1-47f03fdc06a5",
  "date_created": "2026-03-02T18:02:19.694000Z",
  "date_modified": "2026-03-02T18:02:19.694000Z",
  "file_hash": "d741fbb6f647b24bf29977ae2132a2c7ebbec4ce0a4932da78a6453749414416",
  "private": false,
  "record": {
    "abstract": "Recently, D. Gottesman et al. [Phys. Rev. A 64, 012310 (2001)] showed how to\nencode a qubit into a continuous variable quantum system. This encoding was\nrealized by using non-normalizable quantum codewords, which therefore can only\nbe approximated in any real physical setup. Here we show how a neutral atom,\nfalling through an optical cavity and interacting with a single mode of the\nintracavity electromagnetic field, can be used to safely encode a qubit into\nits external degrees of freedom. In fact, the localization induced by a\nhomodyne detection of the cavity field is able to project the near-field atomic\nmotional state into an approximate quantum codeword. The performance of this\nencoding process is then analyzed by evaluating the intrinsic errors induced in\nthe recovery process by the approximated form of the generated codeword.",
    "arxiv_id": "quant-ph/0510053",
    "authors": [
      "Stefano Pirandola",
      "Stefano Mancini",
      "David Vitali",
      "Paolo Tombesi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0953-4075/39/4/023",
    "journal_ref": "J. Phys. B: At. Mol. Opt. Phys. 39, 997 (2006)",
    "title": "Generating continuous variable quantum codewords in the near-field   atomic lithography",
    "url": "https://arxiv.org/abs/quant-ph/0510053"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b598b9d5-ee7e-4481-b65c-6b8455c4ee5c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}