{
  "abstract": "We study coherent electric manipulation of magnetic-field-induced localized states at a double kink of a helical edge in a HgTe/CdHgTe quantum well. An in-plane magnetic field opens a gap in the one-dimensional edge spectrum, while changes in the edge orientation generate localized in-gap states at the kinks. We show that, for suitable geometry and magnetic-field direction, two such states form an effective lithographically defined two-level subsystem. Using an edge-state model that includes both the localized levels and the fully propagating 1D edge states outside the magnetic-field-induced gap, we calculate the electric-dipole matrix elements and solve the time-dependent problem under resonant driving. The resulting dynamics exhibits Rabi oscillations with linear frequencies of $20$--$40$~GHz for realistic parameters. We find that the propagating 1D edge states provide a leakage channel whose strength is strongly controlled by the driving amplitude: reducing the electric field suppresses leakage below the percent level while preserving GHz-scale coherent oscillations. These results establish a route from magnetic-field-induced corner-state physics to electrically driven two-level dynamics in a realistic two-dimensional topological-insulator edge geometry.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. B 114, 225414 (2026)",
  "arxiv": "2605.28499",
  "author_total": 5,
  "authors": [
    {
      "name": "D. V. Khomitsky"
    },
    {
      "name": "E. A. Lavrukhina"
    },
    {
      "name": "D. P. Krasavin"
    },
    {
      "name": "S. S. Krishtopenko"
    },
    {
      "name": "F. Teppe"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cakcw6w83ya9q.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.28499",
  "fulltext_url": null,
  "id": "cakcw6w83ya9q",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.28499",
  "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"
    ],
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.28499",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cakcw6w83ya9q.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:52Z",
      "native_id": "2605.28499",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.28499"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Electrically driven Rabi dynamics of magnetic-field-induced corner states in a two-dimensional topological insulator",
  "title_text": "Electrically driven Rabi dynamics of magnetic-field-induced corner states in a two-dimensional topological insulator",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:41Z",
  "url": "https://research.draconitic.com/paper/cakcw6w83ya9q",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/4ns8-7kd4",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}