Integrated Distributed Sensing and Quantum Communication Networks  

作　　者：Yuehan Xu Tao Wang Peng Huang Guihua Zeng 

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks,Center of Quantum Sensing and Information Processing,Shanghai Jiao Tong University,Shanghai 200240,China [2]Shanghai Research Center for Quantum Sciences,Shanghai 201315,China [3]Hefei National Laboratory,Hefei 230088,China

出　　处：《Research》2025年第1期899-914,共16页研究(英文)

基　　金：supported by Innovation Program for Quantum Science and Technology(Grant No.2021ZD0300703);the National Natural Science Foundation of China(Grant No.62101320);the Shanghai Municipal Science and Technology Major Project(Grant No.2019SHZDZX01);the Hebei Provincial Science and Technology Project(Grant No.22310701D).

摘　　要：The integration of sensing and communication can achieve ubiquitous sensing while enabling ubiquitous communication.Within the gradually improving global communication,the integrated sensing and communication system based on optical fibers can accomplish various functionalities,such as urban structure imaging,seismic wave detection,and pipeline safety monitoring.With the development of quantum communication,quantum networks based on optical fiber are gradually being established.In this paper,we propose an integrated sensing and quantum network(ISAQN)scheme,which can achieve secure key distribution among multiple nodes and distributed sensing under the standard quantum limit.The continuous variables quantum key distribution protocol and the round-trip multiband structure are adopted to achieve the multinode secure key distribution.Meanwhile,the spectrum phase monitoring protocol is proposed to realize distributed sensing.It determines which node is vibrating by monitoring the frequency spectrum and restores the vibration waveform by monitoring the phase change.The scheme is experimentally demonstrated by simulating the vibration in a star structure network.Experimental results indicate that this multiuser quantum network can achieve a secret key rate of approximately 0.7 Mbits/s for each user under 10-km standard fiber transmission,and its network capacity is 8.In terms of distributed sensing,it can achieve a vibration response bandwidth ranging from 1 Hz to 2 kHz,a strain resolution of 0.50 nε/Hz,and a spatial resolution of 0.20 m under shot-noise-limited detection.The proposed ISAQN scheme enables simultaneous quantum communication and distributed sensing in a multipoint network,laying a foundation for future large-scale quantum networks and high-precision sensing networks.

关 键 词：integrated sensing quantum networks ubiquitous sensing pipeline safety monitoringwith ubiquitous communicationwithin quantum communicationquantum networks 

分 类 号：O431.2[机械工程—光学工程]