{
  "abstract": "High-order coherent-state modulation and collective midpoint measurements enable multi-ebit entanglement distribution between cavity-coupled atomic memories. An SRM-inspired 16-QAM receiver achieves $1.75$ ebits per network mode use at $0.5$~dB end-to-end loss, exceeding single-qubit-per-mode benchmarks by $5.8$~dB and lying $3.8$~dB below the half-link capacity bound. The advantage persists for per-interface loss below $0.2$~dB and calibrated phase errors below $0.2π$. For 4-QAM, an optimized POVM with twice as many outcomes raises the achievable rate by $4.0\\%$, revealing measurement-design headroom.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.38804",
  "author_total": 3,
  "authors": [
    {
      "name": "Chaohan Cui"
    },
    {
      "name": "Prajit Dhara"
    },
    {
      "name": "Saikat Guha"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/124h0rvwsgdd3.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.38804",
  "fulltext_url": null,
  "id": "124h0rvwsgdd3",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.38804",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7215121463",
  "pdf_url": "https://arxiv.org/pdf/2609.38804",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/124h0rvwsgdd3.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:26:03Z",
      "native_id": "2609.38804",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.38804"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Entangling Atomic Quantum Memories Using High-Order Modulated Coherent States",
  "title_text": "Entangling Atomic Quantum Memories Using High-Order Modulated Coherent States",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:03Z",
  "url": "https://research.draconitic.com/paper/124h0rvwsgdd3",
  "venue": "arXiv",
  "versions": []
}