Clock Synchronization with Weakly Correlated Photons
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Quantum Physics arXiv:2602.18147 (quant-ph) [Submitted on 20 Feb 2026] Title:Clock Synchronization with Weakly Correlated Photons Authors:Justin Yu Xiang Peh, Darren Ming Zhi Koh, Zifang Xu, Xi Jie Yeo, Peng Kian Tan, Christian Kurtsiefer View a PDF of the paper titled Clock Synchronization with Weakly Correlated Photons, by Justin Yu Xiang Peh and 5 other authors View PDF HTML (experimental) Abstract:Clock synchronization is necessary for communication and distributed computing tasks. Previous schemes based on photon timing correlations use pulsed light or photon pairs for their strong timing correlations. In this work, we demonstrate successful synchronization of crystal clocks using weakly time-correlated photons of 180 ns coherence time from a bunched light source. A synchronization timing jitter of 10 ns is achieved over symmetric -102 dB optical channel loss between two parties, over a span of 25 hours. We also present a model that gives better estimates to the coherence peak finding success probabilities under low signal. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2602.18147 [quant-ph] (or arXiv:2602.18147v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.18147 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Christian Kurtsiefer [view email] [v1] Fri, 20 Feb 2026 11:24:19 UTC (1,243 KB) Full-text links: Access Paper: View a PDF of the paper titled Clock Synchronization with Weakly Correlated Photons, by Justin Yu Xiang Peh and 5 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?)