{
  "annotation_id": "dbde49d3-ed85-48f1-aa74-82c8a96c6dc2",
  "date_created": "2026-03-02T18:02:13.219000Z",
  "date_modified": "2026-03-02T18:02:13.219000Z",
  "file_hash": "6dd68dfcb1d0791f67873b58d1edef905ff96e65d9f9dc653b42d848cf9f520a",
  "private": false,
  "record": {
    "abstract": "Present schemes involving the quantum non-demolition interaction between\natomic samples and off-resonant light pulses allow us to store quantum\ninformation corresponding to a single harmonic oscillator (mode) in one\nmultiatomic system. We discuss the possibility to involve several coherences of\neach atom so that the atomic sample can store information contained in several\nquantum modes. This is achieved by the coupling of different magnetic sublevels\nof the relevant hyperfine level by additional Raman pulses. This technique\nallows us to design not only the quantum non-demolition coupling, but also beam\nsplitterlike and two-mode squeezerlike interactions between light and\ncollective atomic spin.",
    "arxiv_id": "quant-ph/0502135",
    "authors": [
      "T. Opatrny",
      "J. Fiurasek"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.95.053602",
    "journal_ref": "Phys. Rev. Lett. 95, 053602 (2005)",
    "title": "Enhancing the capacity and performance of collective atomic quantum   memory",
    "url": "https://arxiv.org/abs/quant-ph/0502135"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6d063583-5330-4365-b34f-207474162744",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}