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Communication complexity bounds from information causality

arXiv Quantum Physics
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⚡ Quantum Brief
Researchers Nikolai Miklin, Prabhav Jain, and Mariami Gachechiladze introduced a new information-theoretic framework to analyze one-way quantum communication complexity using mutual information axioms. The team derived an extended version of the information causality principle, simplifying known lower bounds for communication complexity across multiple functions while uncovering novel results. Their work demonstrates that this extended principle is at least as strong as non-trivial communication complexity in constraining quantum correlations in Bell experiments. The study establishes a fresh approach to probing quantum technology limits through information theory, bridging gaps between theoretical bounds and practical quantum systems. Published in February 2026, the findings offer a unified method to assess quantum advantages in distributed computing, advancing fundamental and applied quantum research.
Communication complexity bounds from information causality

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Quantum Physics arXiv:2602.10206 (quant-ph) [Submitted on 10 Feb 2026] Title:Communication complexity bounds from information causality Authors:Nikolai Miklin, Prabhav Jain, Mariami Gachechiladze View a PDF of the paper titled Communication complexity bounds from information causality, by Nikolai Miklin and 2 other authors View PDF HTML (experimental) Abstract:Communication complexity, which quantifies the minimum communication required for distributed computation, offers a natural setting for investigating the capabilities and limitations of quantum mechanics in information processing. We introduce an information-theoretic approach to study one-way communication complexity based solely on the axioms of mutual information. Within this framework, we derive an extended statement of the information causality principle, which recovers known lower bounds on the communication complexities for a range of functions in a simplified manner and leads to new results. We further prove that the extended information causality principle is at least as strong as the principle of non-trivial communication complexity in bounding the strength of quantum correlations attainable in Bell experiments. Our study establishes a new route for exploring the fundamental limits of quantum technologies from an information-theoretic viewpoint. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2602.10206 [quant-ph] (or arXiv:2602.10206v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.10206 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Nikolai Miklin [view email] [v1] Tue, 10 Feb 2026 19:01:02 UTC (116 KB) Full-text links: Access Paper: View a PDF of the paper titled Communication complexity bounds from information causality, by Nikolai Miklin and 2 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-02 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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Source: arXiv Quantum Physics