Ultra-broadband near-field Josephson microwave microscopy  

作　　者：Ping Zhang Yang-Yang Lyu Jingjing Lv Zihan Wei Shixian Chen Chenguang Wang Hongmei Du Dingding Li Zixi Wang Shoucheng Hou Runfeng Su Hancong Sun Yuan Du Li Du Liming Gao Yong-Lei Wang Huabing Wang Peiheng Wu 

机构地区：[1]School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China [2]Purple Mountain Laboratories,Nanjing 211111,China [3]School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《National Science Review》2025年第2期44-50,共7页国家科学评论(英文版)

基　　金：supported by the National Key Research and Development Program of China(2021YFA0718802 and 2018YFA0209002);the National Natural Science Foundation of China(61727805,62288101,62101243,62274086 and 62201396);Jiangsu Provincial Key Laboratory of Advanced Manipulating Technique of Electromagnetic Wave,China Postdoctoral Science Foundation;Jiangsu Funding Program for Excellent Postdoctoral Talent.

摘　　要：Advanced microwave technologies constitute the foundation of a wide range of modern sciences,including microwave integrated circuits,quantum computing,microwave photonics,spintronics,etc.To facilitate the design of chip-based microwave devices,there is an increasing demand for state-of-the-art microscopic techniques that are capable of characterizing near-field microwave distribution and performance.In this work,we integrate Josephson junctions onto a nanosized quartz tip,forming a highly sensitive microwave mixer on-tip.This allows us to conduct spectroscopic imaging of near-field microwave distributions with high spatial resolution.By leveraging its microwave-sensitive characteristics,our Josephson microscopy achieves a broad detecting bandwidth of≤200 GHz,as well as remarkable frequency and intensity resolutions.Near-field characterizations of microwave circuits are also conducted to demonstrate the capabilities of Josephson microscopy.Our work emphasizes the benefits of utilizing Josephson microscopy as a real-time,non-destructive technique to advance integrated microwave devices.

关 键 词：Josephson junction NANOPROBE near-field microwave frequency mixing 

分 类 号：O51[理学—低温物理]