Demonstration of Real-Time Precision Optical Time Synchronization in a True Three-Node Architecture
Optics
2025-09-22 v2 Instrumentation and Detectors
Abstract
Multi-node optical clock networks will enable future studies of fundamental physics and enable applications in quantum and classical communications as well as navigation and geodesy. We implement the first ever multi-node optical clock network with real-time, relative synchronization over free-space communication channels and precision on the order of 10 fs, realized as a three-node system in a hub-and-spoke topology. In this paper we describe the system and its performance, including a new, independent, out-of-loop verification of two-way optical time synchronization.
Keywords
Cite
@article{arxiv.2312.16348,
title = {Demonstration of Real-Time Precision Optical Time Synchronization in a True Three-Node Architecture},
author = {Kyle W. Martin and Nader Zaki and Matthew S. Bigelow and Benjamin K. Stuhl and Nolan Matthews and John D. Elgin and Kimberly Frey},
journal= {arXiv preprint arXiv:2312.16348},
year = {2025}
}