{
  "abstract": "Moiré superlattices of van der Waals heterostructures confine excitons into discrete energy levels in finite-sized samples, yet their internal relaxation pathways remain obscured by inhomogeneous broadening. Here, using two-dimensional coherent spectroscopy (2DCS), we directly resolve seven discrete energy levels of the moiré-confined intralayer $\\mathrm{WS}_{2}$ A exciton in an hBN-encapsulated $\\mathrm{WS}_{2}/\\mathrm{WSe}_{2}$ heterostructure, corresponding to a confinement depth of 57.02 meV. By tracking the population of these levels over picosecond delays, we uncover a two-stage thermalization process: an effective exciton temperature drops from 171.8 to 99.3 K within 1.2 ps through rapid intra-manifold population redistribution, followed by a slower recovery toward quasi-equilibrium mediated by exciton--environment interactions. Kullback--Leibler divergence analysis confirms the progressive transition from a non-equilibrium to a Boltzmann-distributed population. Our results establish state-resolved access to moiré exciton dynamics and provide a foundation for exploring nonequilibrium many-body phenomena in moiré quantum materials.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.07539",
  "author_total": 6,
  "authors": [
    {
      "name": "Deran Zhang"
    },
    {
      "name": "Zhexue Chen"
    },
    {
      "name": "Dongxue Chen"
    },
    {
      "name": "Tengfei Yan"
    },
    {
      "name": "Jianhua Jiang"
    },
    {
      "name": "Hui Dong"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dhxd2ydst4m25.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.07539",
  "fulltext_url": null,
  "id": "dhxd2ydst4m25",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.07539",
  "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",
      "physics.optics"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.07539",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dhxd2ydst4m25.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T18:21:30Z",
      "native_id": "2611.07539",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.07539"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Ultrafast Moiré Exciton Dynamics Revealed by Two-Dimensional Coherent Spectroscopy",
  "title_text": "Ultrafast Moiré Exciton Dynamics Revealed by Two-Dimensional Coherent Spectroscopy",
  "type": "preprint",
  "updated_at": "2026-11-08T18:20:56Z",
  "url": "https://research.draconitic.com/paper/dhxd2ydst4m25",
  "venue": "arXiv",
  "versions": []
}