{
  "abstract": "The detection and quantification of quantum entanglement are central problems in quantum information science. Based on the realignment of density matrices and the vectorization of reduced density matrices, we construct a family of enhanced separability criteria for bipartite and multipartite quantum systems. Our criteria recover the previously proposed realignment-based criteria as special cases and detect more entanglement than the earlier ones. Moreover, we derive tighter lower bounds for the concurrence and the convex-roof extended negativity, criteria for detecting the genuine tripartite entanglement, and lower bounds on genuine-multipartite-entanglement concurrence. The advantages of our results are demonstrated with detailed examples.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.15664",
  "author_total": 3,
  "authors": [
    {
      "name": "Yuhang Xie"
    },
    {
      "name": "Yanjun Chu"
    },
    {
      "name": "Shao-Ming Fei"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6qbv5qf0vwwbv.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.15664",
  "fulltext_url": null,
  "id": "6qbv5qf0vwwbv",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.15664",
  "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",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7221787086",
  "pdf_url": "https://arxiv.org/pdf/2610.15664",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6qbv5qf0vwwbv.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.15664",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.15664"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Separability criteria and lower bounds of entanglement via realignment",
  "title_text": "Separability criteria and lower bounds of entanglement via realignment",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/6qbv5qf0vwwbv",
  "venue": "arXiv",
  "versions": []
}