Microwave Transmissions through Superconducting Coplanar Waveguide Resonators with Different Coupling Configurations
ZHANG Si-Lei1,3 , LI Hai-Jie1 , WEI Lian-Fu1,2** , FANG Yu-Rong4 , WANG Yi-Wen1 , ZHOU Pin-Jia1 , WEI Qiang1 , CAO Chun-Hai4 , XIONG Xiang-Zheng3**
1 Quantum Optoelectronics Laboratory, Southwest Jiaotong University, Chengdu 6100312 State Key Laboratory of Optoelectronic Materials Technologies, Sun Yat-sen University, Guangzhou 5102753 Institute of Electromagnetic Field and Microwave Technology, Southwest Jiaotong University, Chengdu 6100314 Research Institute of Superconductor Electronics, Nanjing University, Nanjing 210093
Abstract ：We design and fabricate two types of superconducting niobium coplanar waveguide microwave resonators with different coupling capacitors on high purity Si substrates. Their microwave transmissions are measured at 20 mK. It is found that these two types of resonators possess significantly different loaded quality factors; one is 5.6× 103 and the other is 4.0× 104 . The measured data are fitted well by classical ABCD matrix approach and consequently the coupling capacitances are determined. It is found that the transmission peak deviates from the standard Lorentizian with a frequency broadening.
收稿日期: 2013-04-11
出版日期: 2013-11-21
:
84.40.Az
(Waveguides, transmission lines, striplines)
74.78.Na
(Mesoscopic and nanoscale systems)
85.25.Am
(Superconducting device characterization, design, and modeling)
引用本文:
. [J]. 中国物理快报, 2013, 30(8): 88401-088401.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/30/8/088401
或
https://cpl.iphy.ac.cn/CN/Y2013/V30/I8/88401
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2013, Vol. 30 
