{
  "abstract": "Spatiotemporal microwave magnetic-field imaging reveals current flow in high-frequency circuits and nonequilibrium spin dynamics, yet probes rarely combine calibrated spectral readout, optics-free operation and transient mapping at room temperature. Here ferrimagnetic order in yttrium iron garnet supports coherent coupling from a pump-induced magnon mode, converting target-field amplitude into a spectral splitting with all-microwave readout. Sampling the calibrated splitting over position and delay reconstructs spatiotemporal imaging of magnetic fields. Continuous-wave measurement reaches a sensitivity of 58 pT/$\\sqrt{\\mathrm{Hz}}$ and recovers phases across various powers. Combined with time-resolved frequency-comb spectroscopy, the method reconstructs transient fields with a 130-ns response time. Coplanar-waveguide imaging validates the magnetic selectivity of the mode-splitting readout, where measured maps agree with simulated magnetic-field distribution. In a microwave amplifier, our reconstruction resolves nonuniform switching dynamics and detects downstream field suppression from an open-contact fault. Magnonic coherent splitting provides a scalable route for optics-free imaging of spatiotemporal field evolution in functional devices.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.04618",
  "author_total": 10,
  "authors": [
    {
      "name": "C. K. Wei"
    },
    {
      "name": "Z. J. Chen"
    },
    {
      "name": "J. T. Song"
    },
    {
      "name": "S. H. Ma"
    },
    {
      "name": "W. H. Liu"
    },
    {
      "name": "J. H. Wu"
    },
    {
      "name": "Z. W. Huang"
    },
    {
      "name": "Jinwei Rao"
    },
    {
      "name": "Wei Lu"
    },
    {
      "name": "Bimu Yao"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9rymy9mpbmqzd.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.04618",
  "fulltext_url": null,
  "id": "9rymy9mpbmqzd",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.04618",
  "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"
    ],
    [
      "openalex",
      "3107|Magnetic properties of thin films"
    ]
  ],
  "openalex": "W7220702787",
  "pdf_url": "https://arxiv.org/pdf/2610.04618",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9rymy9mpbmqzd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.04618",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.04618"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Spatiotemporal imaging of microwave magnetic fields via magnonic coherent splitting",
  "title_text": "Spatiotemporal imaging of microwave magnetic fields via magnonic coherent splitting",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/9rymy9mpbmqzd",
  "venue": "arXiv",
  "versions": []
}