{
  "abstract": "Electrically spin-injected ensembles of InGaAs/GaAs quantum dots emit circularly polarized single photons, with the emission helicity determined by the spin polarization of the injected electrons. A ferromagnetic CoFeB spin-injection layer with perpendicular magnetic anisotropy, combined with an MgO tunnel barrier, enables spin-polarized electron injection into the quantum-dot active region, resulting in circularly polarized photon emission at zero applied magnetic field. These devices realize direct spin-charge-photon conversion in an electrically driven, microelectronics-compatible quantum light source that operates without an external pump laser. Using an extended Hanbury Brown-Twiss interferometer with four detectors and time-tagged readout, we measure time-resolved photon-number statistics that resolve up to $|2\\rangle$ Fock states within a single excitation cycle. While single-photon ($n=|1\\rangle$) emission tracks the electrical excitation pulse as expected, the two-photon ($n=|2\\rangle$) statistics exhibit pronounced fluctuations at multiple temporal positions within the pulse. These fluctuations vanish upon demagnetization of the spin-injection layer, establishing a direct link between the multi-photon emission dynamics and the spin polarization of the injected carriers. The observations indicate that spin injection controls not only the helicity of the emitted photons but also higher-order temporal correlations of the emission. The behavior is phenomenologically captured by inserting both a variable excitation mechanism and a set of multi-emitter collapse operators within a stochastic wave function evolution. The platform thus opens a route to electrically driven, spin-controlled single and multi-photon Fock-state sources and provides a testbed for spin-conditioned multi-emitter dynamics in solid-state quantum light sources.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.40593",
  "author_total": 6,
  "authors": [
    {
      "name": "Chiran Wijesundara"
    },
    {
      "name": "Vincent Iglesias-Cardinale"
    },
    {
      "name": "Yuan Lu"
    },
    {
      "name": "Herbert Fotso"
    },
    {
      "name": "Bo Xu"
    },
    {
      "name": "Tim Thomay"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bv74htz9p3q4m.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.40593",
  "fulltext_url": null,
  "id": "bv74htz9p3q4m",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.40593",
  "language": null,
  "licence": "CC0-1.0",
  "licence_label": "CC0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/publicdomain/zero/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
    ],
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.40593",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bv74htz9p3q4m.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:28Z",
      "native_id": "2610.40593",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.40593"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Probing fluctuations in photon emission statistics of spin injected quantum dots with time dependent electronic excitation",
  "title_text": "Probing fluctuations in photon emission statistics of spin injected quantum dots with time dependent electronic excitation",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:47Z",
  "url": "https://research.draconitic.com/paper/bv74htz9p3q4m",
  "venue": "arXiv",
  "versions": []
}