{
  "abstract": "Quantum Selected Configuration Interaction (QSCI) constructs a variational determinant space from measurements of a prepared electronic state, but finite-shot sampling can repeatedly observe high-probability determinants, limiting efficient discovery of configurations important for an accurate selected-CI description. We introduce rotate--sample--unrotate (RSU) determinant discovery, in which the same state is sampled in complementary orbital frames and the observed rotated determinants generate a finite set of candidates in the canonical basis. The Hamiltonian is then diagonalized in an orthonormal selected-CI space without enumerating the full determinant space. State-targeted orbital frames are constructed from an initial selected-CI wavefunction and its external residual. For excited states, we combine RSU with the generative quantum eigensolver (GQE) to prepare target-specific sampling states. Candidate GQE circuits are evaluated by classical selected-CI diagonalization in finite sampled spaces, so the quantum procedure requires only state preparation and determinant sampling. For N$_2$, exact-state controls isolate the determinant-discovery effect: at the stretched geometry, residual-natural-orbital RSU reaches chemical accuracy with 5,000 shots, compared with 20,000 shots for conventional QSCI. The improvement persists with approximate GQE-prepared states and is also observed for target excited states. These results demonstrate improved finite-shot determinant discovery in QSCI for both ground and excited states.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05941",
  "author_total": 1,
  "authors": [
    {
      "name": "Yukihiro Okuno"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/damgzs63jhp16.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05941",
  "fulltext_url": null,
  "id": "damgzs63jhp16",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05941",
  "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.str-el"
    ],
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05941",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/damgzs63jhp16.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.05941",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05941"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Rotated-Frame Determinant Discovery for Ground- and Excited-State Quantum Selected Configuration Interaction",
  "title_text": "Rotated-Frame Determinant Discovery for Ground- and Excited-State Quantum Selected Configuration Interaction",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:19Z",
  "url": "https://research.draconitic.com/paper/damgzs63jhp16",
  "venue": "arXiv",
  "versions": []
}