{
  "abstract": "We present a theoretical study of distributed quantum sensing using a reconfigurable network of $N$ Mach--Zehnder interferometers to simultaneously estimate weighted linear combinations of relative phase shifts. The proposed scheme relies on injecting a Perelomov coherent state, generated from the SU(1,1) group representation, into one port of a passive quantum circuit while the remaining modes are initialized in the vacuum state, thereby establishing non-trivial quantum correlations among the sensors. Based on multi-parameter quantum estimation theory, our analysis shows that this entangled strategy outperforms the standard shot-noise limit and asymptotically achieves the Heisenberg limit. Furthermore, we highlight the crucial role of the first beam splitter's asymmetry; specifically, the optimal transmission coefficient that maximizes sensitivity corresponds to its maximum imbalance. Compared to a separable approach utilizing the same total average photon number, the entangled strategy yields a more efficient use of quantum resources, guaranteeing an accuracy gain between $1$ and $N$. This demonstrates that the entangled strategy is systematically superior to its separable counterpart. Ultimately, these results illustrate the potential of entangled distributed quantum sensor networks for high-precision measurements and provide clear guidelines for optimizing interferometric architectures in quantum metrology.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Journal of the Optical Society of America B, (2026)",
  "arxiv": "2610.17447",
  "author_total": 4,
  "authors": [
    {
      "name": "Seloua Boulifa"
    },
    {
      "name": "Abdallah Slaoui"
    },
    {
      "name": "Hanane EL Hadfi"
    },
    {
      "name": "Rachid Ahl Laamara"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/etvzdzcsfwg55.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.17447",
  "fulltext_url": null,
  "id": "etvzdzcsfwg55",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.17447",
  "language": null,
  "licence": "CC0-1.0",
  "licence_label": "CC0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/publicdomain/zero/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.17447",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/etvzdzcsfwg55.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2610.17447",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.17447"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Distributed quantum phase sensing using an SU(1,1) Perelomov coherent state in a Mach-Zehnder interferometer network",
  "title_text": "Distributed quantum phase sensing using an SU(1,1) Perelomov coherent state in a Mach-Zehnder interferometer network",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/etvzdzcsfwg55",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1364/josab.609310",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}