{
  "abstract": "Symmetry breaking profoundly influences the macroscopic physical properties of materials. For instance, inversion symmetry breaking in monolayer transition metal dichalcogenides enables the emergence of chiral selection rules, featuring distinct optical chirality-selective electronic properties. Here, we demonstrate ultrafast, coherent manipulation of chirality-selective nonlinear optics in monolayer molybdenum disulfide (MoS₂) through time-reversal symmetry breaking via Floquet engineering. By using sub-bandgap, circularly polarized ultrafast optical pulses, we introduce nondegenerate, chirality-selective optical Stark and Bloch-Siegert shifts. This approach effectively lifts the energy degeneracy, leading to pronounced chirality-selective second-harmonic generation. Furthermore, we reveal that the Floquet-engineered chirality-selective states can be finely tuned using optical parameters such as intensity and chirality. Our results show a method for manipulating the energy degree of freedom, paving the way for ultrafast nonlinear photonics.",
  "abstract_shown": true,
  "affiliations": [
    "Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, China.",
    "Department of Electronics and Nanoengineering, Aalto University, FI-00076 Aalto, Finland.",
    "Beijing National Laboratory for Condensed Matter Physics; Key Laboratory for Nanoscale Physics and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.",
    "School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China.",
    "ICFO–Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain.",
    "ICREA–Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain."
  ],
  "article_type": "Research Article",
  "arxiv": null,
  "author_total": 13,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Yi Zhang",
      "orcid": "0000-0002-1704-4144"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Haijun Cao"
    },
    {
      "affs": [
        1
      ],
      "name": "Youqiang Huang",
      "orcid": "0009-0000-3809-1647"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Luojun Du",
      "orcid": "0000-0002-2420-8258"
    },
    {
      "affs": [
        1
      ],
      "name": "Nianze Shang",
      "orcid": "0000-0001-5840-1024"
    },
    {
      "affs": [
        1
      ],
      "name": "Xueyin Bai",
      "orcid": "0000-0002-2254-5701"
    },
    {
      "affs": [
        0
      ],
      "name": "Xuetao Gan",
      "orcid": "0000-0003-2469-5807"
    },
    {
      "affs": [
        0
      ],
      "name": "Dong Mao",
      "orcid": "0000-0002-5744-6316"
    },
    {
      "affs": [
        0
      ],
      "name": "Peng Li",
      "orcid": "0000-0001-8780-5554"
    },
    {
      "affs": [
        0
      ],
      "name": "Jianlin Zhao",
      "orcid": "0000-0002-4619-1215"
    },
    {
      "affs": [
        4,
        5
      ],
      "name": "F. Javier García de Abajo",
      "orcid": "0000-0002-4970-4565"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Sheng Meng",
      "orcid": "0000-0002-1553-1432"
    },
    {
      "affs": [
        1
      ],
      "name": "Zhipei Sun",
      "orcid": "0000-0002-9771-5293"
    }
  ],
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  "cited_by": 0,
  "doi": "10.1126/sciadv.aed6149",
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  "language": "eng",
  "licence": "CC-BY",
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    [
      "heading",
      "Optics"
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      "heading",
      "Physical and Materials Sciences"
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      "heading",
      "Physics"
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      "heading",
      "Research Article"
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  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13721968/pdf/?tool=EBI",
  "pmcid": "PMC13721968",
  "pmid": "42962022",
  "published": "2026-10-30",
  "publisher": "American Association for the Advancement of Science (AAAS)",
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  "subjects": [
    {
      "field": "physics",
      "origin": "heading:Optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Chirality-selective second-harmonic response with Floquet engineering",
  "title_text": "Chirality-selective second-harmonic response with Floquet engineering",
  "type": "peer-reviewed",
  "updated_at": "2026-11-03T12:22:34Z",
  "url": "https://research.draconitic.com/paper/fffs8kaqwjz1p",
  "venue": "Science Advances",
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}