1. Ultra-broadband near-field Josephson microwave microscopy
- Author
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Zhang, Ping, Lyu, Yang-Yang, Lv, Jingjing, Wei, Zihan, Chen, Shixian, Wang, Chenguang, Du, Hongmei, Li, Dingding, Wang, Zixi, Hou, Shoucheng, Su, Runfeng, Sun, Hancong, Du, Yuan, Du, Li, Gao, Liming, Wang, Yong-Lei, Wang, Huabing, and Wu, Peiheng
- Subjects
Physics - Applied Physics ,Condensed Matter - Superconductivity - Abstract
Advanced microwave technologies constitute the foundation of a wide range of modern sciences, including 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 capable of characterizing the near-field microwave distribution and performance. In this work, we integrate Josephson junctions onto a nano-sized 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. Leveraging its microwave-sensitive characteristics, our Josephson microscope achieves a broad detecting bandwidth of up to 200 GHz with remarkable frequency and intensity sensitivities. Our work emphasizes the benefits of utilizing the Josephson microscope as a real-time, non-destructive technique to advance integrated microwave electronics.
- Published
- 2024