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Maximal extension on converse monogamy of entanglement for tripartite pure states

Junhyeong An, Soojoon Lee
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⚡ Quantum Brief
Researchers Junhyeong An and Soojoon Lee have advanced the theory of converse monogamy of entanglement (CMoE), proving that weak entanglement between two quantum parties necessitates strong entanglement with a third under broader conditions than previously established. The study builds on Hayashi and Chen’s 2011 qualitative CMoE framework, which used bipartite entanglement hierarchies, and Singh and Datta’s 2023 distillability-based extensions under classical communication constraints. The authors demonstrate maximal extensions of CMoE, showing their results cannot be further generalized within the existing hierarchies, marking a theoretical boundary for tripartite pure states. This work deepens understanding of entanglement sharing limits, reinforcing that quantum correlations obey stricter constraints than classical ones, with implications for quantum communication and cryptography. The findings, submitted in October 2025, provide a rigorous foundation for future explorations of multipartite entanglement dynamics in quantum information science.
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Quantum Physics arXiv:2510.27264 (quant-ph) [Submitted on 31 Oct 2025] Title:Maximal extension on converse monogamy of entanglement for tripartite pure states Authors:Junhyeong An, Soojoon Lee View a PDF of the paper titled Maximal extension on converse monogamy of entanglement for tripartite pure states, by Junhyeong An and Soojoon Lee View PDF HTML (experimental) Abstract:Unlike classical correlations, entanglement cannot be freely shared among multiple parties. This unique feature of quantum systems is known as the monogamy of entanglement. While it holds for all multipartite pure states, its converse -- weak entanglement between two parties enforces strong entanglement with a third party -- occurs only under specific conditions. In particular, Hayashi and Chen [Phys. Rev. A \textbf{84}, 012325 (2011)] demonstrated a qualitative version of the converse monogamy of entanglement (CMoE) for tripartite pure states by employing a hierarchy of bipartite entanglement defined through the relations among various separability criteria, and Singh and Datta [IEEE Trans. Inf. Theory \textbf{69}, 6564 (2023)] later extended this notion of the CMoE from the viewpoint of distillability under one-way or two-way classical communication. In this work, we extend their results to the CMoE with broader conditions, and furthermore show that our extensions are maximal with respect to the hierarchies they considered. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2510.27264 [quant-ph] (or arXiv:2510.27264v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2510.27264 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Junhyeong An [view email] [v1] Fri, 31 Oct 2025 08:03:38 UTC (353 KB) Full-text links: Access Paper: View a PDF of the paper titled Maximal extension on converse monogamy of entanglement for tripartite pure states, by Junhyeong An and Soojoon LeeView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2025-10 References & Citations INSPIRE HEP NASA ADSGoogle Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv (What is alphaXiv?) Links to Code Toggle CatalyzeX Code Finder for Papers (What is CatalyzeX?) DagsHub Toggle DagsHub (What is DagsHub?) GotitPub Toggle Gotit.pub (What is GotitPub?) Huggingface Toggle Hugging Face (What is Huggingface?) Links to Code Toggle Papers with Code (What is Papers with Code?) ScienceCast Toggle ScienceCast (What is ScienceCast?) Demos Demos Replicate Toggle Replicate (What is Replicate?) Spaces Toggle Hugging Face Spaces (What is Spaces?) Spaces Toggle TXYZ.AI (What is TXYZ.AI?) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower (What are Influence Flowers?) Core recommender toggle CORE Recommender (What is CORE?) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs. Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)

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