{
  "abstract": "We propose a velocity sensor based on a two-memory Mach--Zehnder interferometer fed by a coherent probe and squeezed vacuum, read out by balanced homodyne detection. One memory is taken as a stationary reference, while the second memory moves during storage, so that its velocity is mapped onto a differential interferometric phase at readout. The two memories are otherwise assumed identical and are described by a Gaussian write--store--read lifetime together with the associated unconditional noise floor. Using the classical Fisher information, we derive the velocity sensitivity, the transmission threshold required for a target quantum gain, and the optimum storage time. The squeezed scheme improves on equal-resource coherent homodyne within an operating window set mainly by total transmission and phase stability. For representative near-term parameters, unconditional memory noise floors up to about $10^{-1}$ photons per trial do not by themselves remove the advantage; after optimization the improvement remains at the few-percent level and is limited chiefly by loss.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: AVS Quantum Sci. 8, 034405 (2026)",
  "arxiv": "2605.27723",
  "author_total": 3,
  "authors": [
    {
      "name": "Mustafa Gündoğan"
    },
    {
      "name": "Arash Ahmadi"
    },
    {
      "name": "Markus Krutzik"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f3ajc0qfvj6hx.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.27723",
  "fulltext_url": null,
  "id": "f3ajc0qfvj6hx",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.27723",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.27723",
  "pmcid": null,
  "pmid": null,
  "published": "2026-05-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f3ajc0qfvj6hx.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:03Z",
      "native_id": "2605.27723",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.27723"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Memory-assisted squeezed light velocimetry under realistic loss and incoherent noise",
  "title_text": "Memory-assisted squeezed light velocimetry under realistic loss and incoherent noise",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:03Z",
  "url": "https://research.draconitic.com/paper/f3ajc0qfvj6hx",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1116/5.0345557",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}