Tunable superconducting resonators via on-chip control of local magnetic field  

作　　者：王晨光 岳文诚 涂学凑 迟天圆 郭婷婷 吕阳阳 董思宁 曹春海 张蜡宝 贾小氢 孙国柱 康琳 陈健 王永磊 王华兵 吴培亨 Chen-Guang Wang;Wen-Cheng Yue;Xuecou Tu;Tianyuan Chi;Tingting Guo;Yang-Yang Lyu;Sining Dong;Chunhai Cao;Labao Zhang;Xiaoqing Jia;Guozhu Sun;Lin Kang;Jian Chen;Yong-Lei Wang;Huabing Wang;Peiheng Wu(Research Institute of Superconductor Electronics,School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China;Purple Mountain Laboratories,Nanjing 211111,China;National Key Laboratory of Spintronics,Nanjing University,Suzhou 215163,China;Hefei National Laboratory,Hefei 230094,China)

机构地区：[1]Research Institute of Superconductor Electronics,School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China [2]Purple Mountain Laboratories,Nanjing 211111,China [3]National Key Laboratory of Spintronics,Nanjing University,Suzhou 215163,China [4]Hefei National Laboratory,Hefei 230094,China

出　　处：《Chinese Physics B》2024年第5期674-679,共6页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant Nos.2021YFA0718802 and 2018YFA0209002);the National Natural Science Foundation of China(Grant Nos.62274086,62288101,61971464,62101243,and 11961141002);the Excellent Young Scholar Program of Jiangsu Province,China(Grant Nos.BK20200008 and BK20200060);the Outstanding Postdoctoral Program of Jiangsu Province,China;the Fundamental Research Funds for the Central Universities;the Fund from Jiangsu Key Laboratory of Advanced Techniques for Manipulating Electromagnetic Waves。

摘　　要：Superconducting microwave resonators play a pivotal role in superconducting quantum circuits.The ability to finetune their resonant frequencies provides enhanced control and flexibility.Here,we introduce a frequency-tunable superconducting coplanar waveguide resonator.By applying electrical currents through specifically designed ground wires,we achieve the generation and control of a localized magnetic field on the central line of the resonator,enabling continuous tuning of its resonant frequency.We demonstrate a frequency tuning range of 54.85 MHz in a 6.21-GHz resonator.This integrated and tunable resonator holds great potential as a dynamically tunable filter and as a key component of communication buses and memory elements in superconducting quantum computing.

关 键 词：superconducting resonator NBN kinetic inductance tunable resonator 

分 类 号：O511[理学—低温物理] TN751.2[理学—物理]