Ultra-broadband near-field Josephson microwave microscopy

• DOI: 10.48550/arxiv.2401.12545
• Publication Date: 2024-01-01
• Authors: 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
• Keywords: Microwave Imaging

Advanced microwave technologies constitute the foundation of a wide range modern sciences, including quantum computing, photonics, spintronics, etc. To facilitate design chip-based devices, there is an increasing demand for state-of-the-art microscopic techniques capable characterizing near-field distribution and performance. In this work, we integrate Josephson junctions onto nano-sized quartz tip, forming highly sensitive mixer on-tip. This allows us to conduct spectroscopic imaging distributions with high spatial resolution. Leveraging its microwave-sensitive characteristics, our microscope achieves broad detecting bandwidth up 200 GHz remarkable frequency intensity sensitivities. Our work emphasizes benefits utilizing as real-time, non-destructive technique advance integrated electronics.