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用于超导量子比特直流特性测试的级联低通滤波器 被引量：4

Cascaded low-pass filters for the measurements of DC characteristics of superconducting qubits
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摘要 设计并制作了用于超导量子比特直流特性测试的级联低通滤波器,该滤波器由LCR滤波器和铜粉滤波器级联而成.滤波器在77K温度下的截止频率为120kHz,衰减率为-40dB/decade,10MHz以上迅速衰减至-60dB以下.频率响应优于单一的LCR滤波器或铜粉滤波器,能在低温下有效抑制高频噪声. Cascaded low-pass filters are designed and fabricated for the measurements of dc characteristics of superconducting qubits. The filters are cascaded by LCR filter and copper powder filter. At 77 K the cutoff frequency is 120 kHz and the roll-off is -40 dB/decade. We achieved an attenuation -60 dB when the frequency is above 10 MHz. The frequency response of the cascaded filters is better than single LCR filter or copper powder filter and high frequency noise can be suppressed effectively at low temperature.
作者 吴威 贾开 李铁夫 王吉林 刘建设 陈炜
机构地区 清华大学微电子学研究所
出处 《科学通报》 EI CAS CSCD 北大核心 2010年第20期1969-1973,共5页 Chinese Science Bulletin
基金 国家自然科学基金(60836001) 国家重点基础研究发展计划(2006CB921801 2006CB921106) 清华信息科学与技术国家实验室基金(042001001)资助项目
关键词 超导量子比特 低通滤波器 LCR滤波器 铜粉滤波器 频率响应 噪声 superconducting qubits, low-pass filter, LCR filter, copper powder filter, frequency response, noise
分类号 TN713.4 [电子电信—电路与系统]
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参考文献17

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共引文献2

同被引文献38

  • 1吴敬波,张彩虹,陈健,孙国柱,康琳,许伟伟,吴培亨.粉末微波滤波器的制备和特性[J].低温物理学报,2006,28(4):339-342. 被引量：3
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引证文献4

科学通报
2010年 第20期

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