{
  "annotation_id": "1f0e63e1-9cfb-4f51-a500-8f24bda28e83",
  "date_created": "2026-03-02T18:02:13.463000Z",
  "date_modified": "2026-03-02T18:02:13.463000Z",
  "file_hash": "5bc297caa8640176969846c2a405f0b4611562fdbb0a929fd7d9cfa7ad23a034",
  "private": false,
  "record": {
    "abstract": "We study the measurement-induced non-Gaussian operation on the single- and\ntwo-mode \\textit{Gaussian} squeezed vacuum states with beam splitters and\non-off type photon detectors, with which \\textit{mixed non-Gaussian} states are\ngenerally obtained in the conditional process. It is known that the\nentanglement can be enhanced via this non-Gaussian operation on the two-mode\nsqueezed vacuum state. We show that, in the range of practical squeezing\nparameters, the conditional outputs are still close to Gaussian states, but\ntheir second order variances of quantum fluctuations and correlations are\neffectively suppressed and enhanced, respectively. To investigate an\noperational meaning of these states, especially entangled states, we also\nevaluate the quantum dense coding scheme from the viewpoint of the mutual\ninformation, and we show that non-Gaussian entangled state can be advantageous\ncompared with the original two-mode squeezed state.",
    "arxiv_id": "quant-ph/0503049",
    "authors": [
      "Akira Kitagawa",
      "Masahiro Takeoka",
      "Kentaro Wakui",
      "Masahide Sasaki"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.022334",
    "journal_ref": "Phys. Rev. A 72, 022334 (2005)",
    "title": "Effective squeezing enhancement via measurement-induced non-Gaussian   operation and its application to dense coding scheme",
    "url": "https://arxiv.org/abs/quant-ph/0503049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fbd37178-f7e3-4cd8-a292-28157c4d6a62",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}