{
  "abstract": "We study a finite Floquet chain in which a uniform nearest-neighbor hopping coexists with a periodically rotating, \\textrm{SU(2)}-dictated spin-assisted hopping profile. The resulting coupling is spatially inhomogeneous -- weakest at the chain boundaries and strongest in the bulk -- and produces a frequency-dependent Floquet-Sambe bottleneck. In the closed system, the mean inverse participation ratio (\\textrm{MIPR}) of the Floquet eigenstates exhibits a striking nonmonotonic dependence on the driving frequency $ω$: the states remain extended at both low and high frequencies, but become maximally localized at an intermediate frequency. We demonstrate that this localization maximum occurs at $ω_{\\mathrm{peak}}\\sim μ_{-s}=\\sqrt{% 2s}$, a scale controlled by the first boundary bottleneck. To connect these spectral properties to measurable transport, we construct an open-system Floquet-Sambe Green-function inverse participation ratio from the spatial density of the injected scattering state. This open-system diagnostic recovers the same nonmonotonic localization trend as its closed-system counterpart, with the peak shifted to higher frequencies by the static bandwidth and the lead self-energy. These findings establish the driven synthetic spin chain as a directly realizable, frequency-tunable platform for coherent information storage and retrieval, rooted in the interplay of Floquet-Sambe virtual channels, boundary-controlled localization, and frequency-selective transport in emerging multi-level superconducting circuit architectures.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.15293",
  "author_total": 4,
  "authors": [
    {
      "name": "J. Cao"
    },
    {
      "name": "K. L. Zhang"
    },
    {
      "name": "R. Wang"
    },
    {
      "name": "X. Z. Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fyb32v15mqm0k.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.15293",
  "fulltext_url": null,
  "id": "fyb32v15mqm0k",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.15293",
  "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.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.other"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.15293",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fyb32v15mqm0k.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:50Z",
      "native_id": "2606.15293",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.15293"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Floquet-Sambe Bottleneck and Frequency-Selective Localization in a Driven Synthetic Spin Chain",
  "title_text": "Floquet-Sambe Bottleneck and Frequency-Selective Localization in a Driven Synthetic Spin Chain",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:50Z",
  "url": "https://research.draconitic.com/paper/fyb32v15mqm0k",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/1p6l-tj12",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}