{
  "annotation_id": "55a4db42-bffe-4bc6-a894-06f01391064f",
  "date_created": "2026-03-02T18:02:31.247000Z",
  "date_modified": "2026-03-02T18:02:31.247000Z",
  "file_hash": "ec6b74f51951d2dddd1e45937da7165302ac16ab78c90995d43fd13a83b19374",
  "private": false,
  "record": {
    "abstract": "We investigated the preservation of information encoded into the relative\nphase and amplitudes of optical pulses during storage and retrieval in an\noptical memory based on stimulated photon echo. By interfering photon echoes\nproduced in a Ti-indiffused single-mode Er-doped LiNbO$_{3}$ waveguiding\nstructure at telecom wavelength, we found that decoherence in the atomic medium\ntranslates only as losses (and not as degradation) of information, as long as\nthe data pulse series is short compared to the atomic decoherence time. The\nexperimentally measured value of the visibility for interfering echoes is close\nto 100 %. In addition to the expected three-pulse photon-echo interferences we\nalso observed interference due to a four-pulse photon echo. Our findings are of\nparticular interest for future long-distance quantum communication protocols,\nwhich rely on the reversible transfer of quantum states between light and atoms\nwith high fidelity.",
    "arxiv_id": "quant-ph/0609201",
    "authors": [
      "M. U. Staudt",
      "S. R. Hastings-Simon",
      "M. Nilsson",
      "M. Afzelius",
      "V. Scarani",
      "R. Ricken",
      "H. Suche",
      "W. Sohler",
      "W. Tittel",
      "N. Gisin"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.98.113601",
    "title": "Fidelity of an optical memory based on stimulated photon echoes",
    "url": "https://arxiv.org/abs/quant-ph/0609201"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "69cd266e-92ed-440f-8430-0f5d31ad90de",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}