{
  "abstract": "Periodic driving of a Josephson junction produces resonant transport signatures known as Shapiro spikes, conventionally described by effective circuit models. Here, we demonstrate Shapiro spikes in a neutral quantum fluid using simulations of a potential-biased atomic Josephson junction. The dc-current resonances follow the expected Bessel-function scaling, including the suppression and revival of individual resonances with increasing modulation strength. We uncover their microscopic mechanism by showing that the phase-winding frequency develops finite plateaus at integer multiples of the drive frequency. These phase-locked states are sustained by quantized-vortex nucleation and the associated $2π$ phase slips. Remarkably, within a locking plateau, the dc current and density transfer can reverse direction while the phase-winding frequency remains locked to the drive, giving rise to negative-mobility transport. Our results establish a microscopic link between vortex-mediated phase slips, Shapiro resonances, and anomalous transport in a neutral quantum fluid, revealing how quantized vortices convert resonant transport into phase-locked dynamics with negative mobility.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05477",
  "author_total": 3,
  "authors": [
    {
      "name": "Vijay Pal Singh"
    },
    {
      "name": "Ludwig Mathey"
    },
    {
      "name": "Luigi Amico"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1eqy6qhh90bqn.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05477",
  "fulltext_url": null,
  "id": "1eqy6qhh90bqn",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05477",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.quant-gas"
    ],
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05477",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1eqy6qhh90bqn.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.05477",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05477"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.quant-gas",
      "subfield": "amo"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.quant-gas",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Shapiro spikes in driven quantum fluids",
  "title_text": "Shapiro spikes in driven quantum fluids",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:18Z",
  "url": "https://research.draconitic.com/paper/1eqy6qhh90bqn",
  "venue": "arXiv",
  "versions": []
}