{
  "abstract": "High harmonic generation (HHG) has emerged as a powerful probe of ultrafast electron dynamics in solids. However, in strongly correlated materials, where electronic excitations arise from many-body interactions rather than single-particle band dispersion, the field remains in its infancy. Here, we report HHG up to the 23$^{rd}$ order in the prototypical Mott insulator La$_2$CuO$_4$. We observe a robust 4 eV cutoff that is independent of driving field strength, revealing an intrinsic energy scale defined by the Hubbard bands. Using time-resolved high harmonic spectroscopy, we disentangle the distinct contributions of carrier creation, intraband acceleration, and interband recombination to the nonequilibrium radiation spectrum. We demonstrate that photo-doping triggers a fundamental reorganization of the many-body manifolds above a critical excitation density, a process that renormalizes the band curvature and suppresses nonlinear intraband currents, thereby directly imprinting the signature of many-body band reconstruction onto the harmonic emission. These results establish HHG as a sensitive probe of subtle correlation-driven electronic reconstructions and highlight that many-body interactions enable extreme nonlinear optical responses that are highly tunable in nonequilibrium states.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.12136",
  "author_total": 10,
  "authors": [
    {
      "name": "Mingyao Guo"
    },
    {
      "name": "Ryo Noguchi"
    },
    {
      "name": "Mohammad Muntasir Hassan"
    },
    {
      "name": "Steven J. Gomez Alvarado"
    },
    {
      "name": "Reina M. Gomez"
    },
    {
      "name": "Yao-Jui Chan"
    },
    {
      "name": "Yu-Chieh Wen"
    },
    {
      "name": "Stephen D. Wilson"
    },
    {
      "name": "Yao Wang"
    },
    {
      "name": "David Hsieh"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dp5b44cnrmrqc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.12136",
  "fulltext_url": null,
  "id": "dp5b44cnrmrqc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.12136",
  "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.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ],
    [
      "openalex",
      "3107|Laser-Matter Interactions and Applications"
    ]
  ],
  "openalex": "W7221088782",
  "pdf_url": "https://arxiv.org/pdf/2610.12136",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dp5b44cnrmrqc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.12136",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.12136"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Dynamical many-body control of high harmonic generation in a Mott insulator",
  "title_text": "Dynamical many-body control of high harmonic generation in a Mott insulator",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/dp5b44cnrmrqc",
  "venue": "arXiv",
  "versions": []
}