物理学报2026，Vol.75Issue(17)：79-86,8.DOI:10.7498/aps.75.20260417
基于里德伯原子的长波授时信号高保真接收
High-fidelity reception of long-wave timing signals based on Rydberg atoms
摘要
Abstract
Rydberg atoms exhibit exceptional sensitivity to long-wave electric fields,presenting a promising solution to the signal degradation that plagues ground-based long-wave time-service systems in remote or weak-signal regions.However,practical Loran-C signal reception using Rydberg-atom sensors is currently limited by fidelity deterioration,primarily caused by electrostatic shielding from vapor cell walls and frequency-doubling noise.In this work,we prepare Rydberg atoms via a two-photon excitation scheme and integrate them with a modulation transfer spectroscopy(MTS)and electromagnetically induced transparency(EIT)frequency-stabilization system.By employing a parallel-plate vapor cell subjected to a strong DC bias field,we leverage the DC Stark effect to precisely control the EIT resonance frequency shift,thereby overcoming the aforementioned limitations.This approach enables high-fidelity reception of Loran-C signals,accompanied by comprehensive time-and frequency-domain analyses.Quantitative measurements demonstrate a single-pulse fidelity of 98.0％and an envelope cycle difference(ECD)of 0.08 μs.Furthermore,by extracting and comparing the phase-reversal character-istics of odd-and even-period pulse trains,we rigorously verify the phase stability of the Rydberg-atom antenna.This work provides a robust technical foundation for the reception and demodulation of long-wave time-service signals using Rydberg-atom sensors,paving the way for next-generation,high-sensitivity monitoring and evaluation systems in navigation and timing infrastructure.关键词
里德伯原子/长波授时/罗兰-C信号/量子测量Key words
Rydberg atoms/long-wave time service/Loran-C signal/quantum measurement引用本文复制引用
覃子意,侯晓凯,曹根伟,徐超,王莹,曹明涛,董瑞芳,卢晓春,张首刚..基于里德伯原子的长波授时信号高保真接收[J].物理学报,2026,75(17):79-86,8.基金项目
中国科学院青年创新促进会(批准号:2021408,2022413,2023425)、中国科学院稳定支持基础研究领域青年团队计划(批准号:YSBR-085)和陕西省技术创新引导专项基金(批准号:2024QY-SZX-19)资助的课题. Project supported by the Youth Innovation Promotion Association of the Chinese Academy of Sciences(Grant Nos.2021408,2022413,2023425),the Chinese Academy of Sciences(CAS)Program for Stable Support to Young Research Teams in Basic Research(Grant No.YSBR-085),and the Technical Innovation Guidance Special Fund of Shaanxi Province,China(Grant No.2024QY-SZX-19). （批准号:2021408,2022413,2023425）
