{
  "annotation_id": "a096c42a-03ed-4cb6-a932-38ecee27148f",
  "date_created": "2026-03-02T18:02:13.517000Z",
  "date_modified": "2026-03-02T18:02:13.517000Z",
  "file_hash": "48e84b4dedcb2db2281f84252f7a12131a6cb8ac16b084b9a3158815cf549e12",
  "private": false,
  "record": {
    "abstract": "We propose quantum dense coding protocol for optical images. This protocol\nextends the earlier proposed dense coding scheme for continuous variables\n[S.L.Braunstein and H.J.Kimble, Phys.Rev.A 61, 042302 (2000)] to an essentially\nmultimode in space and time optical quantum communication channel. This new\nscheme allows, in particular, for parallel dense coding of non-stationary\noptical images. Similar to some other quantum dense coding protocols, our\nscheme exploits the possibility of sending a classical message through only one\nof the two entangled spatially-multimode beams, using the other one as a\nreference system. We evaluate the Shannon mutual information for our protocol\nand find that it is superior to the standard quantum limit. Finally, we show\nhow to optimize the performance of our scheme as a function of the\nspatio-temporal parameters of the multimode entangled light and of the input\nimages.",
    "arxiv_id": "quant-ph/0501068",
    "authors": [
      "T. Yu. Golubeva",
      "Yu. M. Golubev",
      "I. V. Sokolov",
      "M. I. Kolobov"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1080/09500340500217506",
    "journal_ref": "Journal of Modern Optics Vol. 53, Nos. 5 - 6, 2006, 699 - 711",
    "title": "Quantum parallel dense coding of optical images",
    "url": "https://arxiv.org/abs/quant-ph/0501068"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9df6233d-30a3-4453-bce8-664a3ca52ef5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}