Author:
Wang 王 Chen-Guang 晨光,Yue 岳 Wen-Cheng 文诚,Tu 涂 Xuecou 学凑,Chi 迟 Tianyuan 天圆,Guo 郭 Tingting 婷婷,Lyu 吕 Yang-Yang 阳阳,Dong 董 Sining 思宁,Cao 曹 Chunhai 春海,Zhang 张 Labao 蜡宝,Jia 贾 Xiaoqing 小氢,Sun 孙 Guozhu 国柱,Kang 康 Lin 琳,Chen 陈 Jian 健,Wang 王 Yong-Lei 永磊,Wang 王 Huabing 华兵,Wu 吴 Peiheng 培亨
Abstract
Superconducting microwave resonators play a pivotal role in superconducting quantum circuits. The ability to fine-tune 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.