{
  "abstract": "Generalized contextuality is known to be required in optimal strategies for quantum state discrimination protocols. More recently, sequential discrimination tasks have been studied; n players attempt to determine in which state a qubit was prepared, in such a way that they all have a finite probability of success. We consider the extent to which contextuality plays a role in sequential versions of both unambiguous and minimum error discrimination. In the standard nonsequential case where n = 1, we use the COPE formalism to demonstrate that the presence of contextuality is guaranteed not only for the optimal measurement, but for a specific set of nonoptimal measurements as well. In the sequential case n > 1, we show that the presence of contextuality depends on which states are prepared, and on the protocol (unambiguous or minimum error) selected.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.04099",
  "author_total": 2,
  "authors": [
    {
      "name": "Nyan Raess"
    },
    {
      "name": "Farid Shahandeh"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/akne6dg8xgysk.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.04099",
  "fulltext_url": null,
  "id": "akne6dg8xgysk",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.04099",
  "language": null,
  "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",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Quantum Mechanics and Applications"
    ]
  ],
  "openalex": "W7196941248",
  "pdf_url": "https://arxiv.org/pdf/2608.04099",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/akne6dg8xgysk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2608.04099",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.04099"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Contextuality in Sequential State Discrimination",
  "title_text": "Contextuality in Sequential State Discrimination",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/akne6dg8xgysk",
  "venue": "arXiv",
  "versions": []
}