{
  "abstract": "Recent experiments demonstrating superconducting-like characteristics in materials above their equilibrium transition temperatures following strong sub-picosecond optical excitation have stimulated theoretical interest in phase-disordered superconductors subject to a periodically modulated superfluid stiffness. Previous analyses of the single-layer optical conductivity have shown that such a drive can enhance the low-frequency $1/ω$ response, even when the period-averaged stiffness remains unchanged. We extend these studies to bilayer systems, such as the YBa$_2$Cu$_3$O$_{6+x}$ (YBCO) cuprate, by considering drives with different symmetries. Specifically, we investigate a layer-symmetric drive, in which the two planes stiffen and soften simultaneously, and a layer-antisymmetric drive, in which one plane stiffens while the other softens. Both drives enhance correlations of the layer-averaged phase and generate comparable superconducting-like optical conductivities. Only the symmetric drive, however, strengthens relative-phase locking and the associated counterflow response to a magnetic field parallel to the planes. Thus, an enhanced $1/ω$ optical conductivity does not by itself imply enhanced magnetic screening. In view of applications to driven YBCO, where superconducting-like in-plane optics and transient diamagnetism have both been reported, our result provides a symmetry diagnostic: within a phase-synchronization mechanism, the experimentally active low-frequency stiffness modulation must contain a substantial layer-symmetric component.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.16137",
  "author_total": 7,
  "authors": [
    {
      "name": "Duilio De Santis"
    },
    {
      "name": "Sambuddha Chattopadhyay"
    },
    {
      "name": "Marios H. Michael"
    },
    {
      "name": "Andrea Cavalleri"
    },
    {
      "name": "Gil Refael"
    },
    {
      "name": "Patrick A. Lee"
    },
    {
      "name": "Eugene A. Demler"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/12mgb353mf50g.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.16137",
  "fulltext_url": null,
  "id": "12mgb353mf50g",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.16137",
  "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",
      "cond-mat.stat-mech"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ],
    [
      "arxiv",
      "cond-mat.supr-con"
    ],
    [
      "arxiv",
      "nlin.PS"
    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7213411039",
  "pdf_url": "https://arxiv.org/pdf/2609.16137",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/12mgb353mf50g.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:41Z",
      "native_id": "2609.16137",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.16137"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.stat-mech",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Optical and magnetic signatures of drive-enhanced coherence in phase-disordered superconducting bilayers",
  "title_text": "Optical and magnetic signatures of drive-enhanced coherence in phase-disordered superconducting bilayers",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:41Z",
  "url": "https://research.draconitic.com/paper/12mgb353mf50g",
  "venue": "arXiv",
  "versions": []
}