{
  "abstract": "Witnessing entanglement between electrons propagating in quantum circuits requires accessing their two-electron coherences, which encode the two-particle quantum correlations generated by Coulomb interactions. Yet, experimental reconstruction of two-electron coherence remains a major challenge. We introduce photo-assisted two-electron tomography, a quantum coherence reconstruction protocol from dc-currents and time-averaged current correlations, routinely measured in electron quantum optics experiments. Driving an energy filter with a small rf tone encodes off-diagonal coherences in the frequency domain into the dc-current response, enabling single-electron tomography without resorting to current-noise measurements. Extending it to two channels, current correlations after two photo-assisted filters reconstruct the two-electron Wigner distribution and isolate its irreducible two-body part. When applied to Coulomb-coupled quantum Hall edge channels, the protocol reveals interaction-induced energy entanglement. Signatures of this entanglement are visible through the violation of an entanglement witness based on Cauchy-Schwarz inequalities, as well as Wigner function negativities, which remain resolved above the thermal background for realistic device parameters. A generalized Franson geometry further extends the approach to intra-channel two-electron coherences. This opens a direct pathway to detect and characterize electronic entanglement in ballistic quantum circuits.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.12286",
  "author_total": 7,
  "authors": [
    {
      "name": "M. Paulet"
    },
    {
      "name": "G. Rebora"
    },
    {
      "name": "M. Bienioszek"
    },
    {
      "name": "G. Ménard"
    },
    {
      "name": "G. Fève"
    },
    {
      "name": "A. Feller"
    },
    {
      "name": "P. Degiovanni"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5phaykr1fczfj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.12286",
  "fulltext_url": null,
  "id": "5phaykr1fczfj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.12286",
  "language": "en",
  "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"
    ],
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      "arxiv",
      "quant-ph"
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      "openalex",
      "3107|Quantum and electron transport phenomena"
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  "openalex": "W7221078883",
  "pdf_url": "https://arxiv.org/pdf/2610.12286",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5phaykr1fczfj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.12286",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.12286"
    },
    {
      "first_seen": "2026-11-03T12:20:18Z",
      "native_id": "hal-05849055",
      "source": "hal",
      "url": "https://hal.science/hal-05849055v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Accessing electronic entanglement via photo-assisted two-electron tomography",
  "title_text": "Accessing electronic entanglement via photo-assisted two-electron tomography",
  "type": "preprint",
  "updated_at": "2026-11-04T12:20:49Z",
  "url": "https://research.draconitic.com/paper/5phaykr1fczfj",
  "venue": "arXiv",
  "versions": []
}