Surpassing the currently achievable distance of quantum key distribution based on sending-or-not-sending approach
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Quantum Physics arXiv:2602.03173 (quant-ph) [Submitted on 3 Feb 2026] Title:Surpassing the currently achievable distance of quantum key distribution based on sending-or-not-sending approach Authors:Georgi Bebrov View a PDF of the paper titled Surpassing the currently achievable distance of quantum key distribution based on sending-or-not-sending approach, by Georgi Bebrov View PDF HTML (experimental) Abstract:Protocols based on the sending-or-not-sending (SNS) principle have been intensively studied in recent years and have been shown to enable the longest transmission distances in quantum key distribution (QKD). In this work, we propose a sending-or-not-sending phase-matching QKD protocol (SNS-PM-QKD) that improves tolerance to phase mismatch, thereby extending the achievable transmission distance. We present a security analysis of SNS-PM-QKD in the asymptotic (infinite-key) regime under collective attacks. The performance of the proposed protocol is compared with that of standard phase-matching QKD, theoretical SNS-type twin-field QKD protocols (SNS-TF-QKD), and an experimental SNS-TF-QKD operated over transmission distances of up to 1002km. Our results show that SNS-PM-QKD achieves greater transmission distances than these existing protocols, highlighting its potential for long-distance quantum communication. Comments: Subjects: Quantum Physics (quant-ph) MSC classes: 81P94 (Primary) 81P45, 94B05 (Secondary) ACM classes: E.3; E.4 Cite as: arXiv:2602.03173 [quant-ph] (or arXiv:2602.03173v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.03173 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Georgi Bebrov PhD [view email] [v1] Tue, 3 Feb 2026 06:41:58 UTC (5,771 KB) Full-text links: Access Paper: View a PDF of the paper titled Surpassing the currently achievable distance of quantum key distribution based on sending-or-not-sending approach, by Georgi BebrovView 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?)