Fabrication and characterization of ultra-low noise narrow and wide band Josephson parametric amplifiers

doi:10.1088/1674-1056/26/9/094203

中国物理B ›› 2017, Vol. 26 ›› Issue (9): 94203-094203.doi: 10.1088/1674-1056/26/9/094203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Fabrication and characterization of ultra-low noise narrow and wide band Josephson parametric amplifiers

Keqiang Huang(黄克强), Qiujiang Guo(郭秋江), Chao Song(宋超), Yarui Zheng(郑亚锐), Hui Deng(邓辉), Yulin Wu(吴玉林), Yirong Jin(金贻荣), Xiaobo Zhu(朱晓波), Dongning Zheng(郑东宁)

1 Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 Department of Physics, Zhejiang University, Hangzhou 310027, China;
3 School of Physics, University of Chinese Academy of Sciences, Beijing 100190, China;
4 CAS Centre for Excellence and Synergetic Innovation Centre in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China

收稿日期:2017-05-15 出版日期:2017-09-05 发布日期:2017-09-05
通讯作者: Xiaobo Zhu, Dongning Zheng E-mail:xbzhu16@ustc.edu.cn;dzheng@aphy.iphy.ac.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 91321208, 11374344, 11404386, 11574380, and 11674376), the Ministry of Science and Technology of China (Grant Nos. 2014CB921401 and 2016YFA0300601), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB07010300).

Fabrication and characterization of ultra-low noise narrow and wide band Josephson parametric amplifiers

Keqiang Huang(黄克强)^1,3, Qiujiang Guo(郭秋江)², Chao Song(宋超)², Yarui Zheng(郑亚锐)¹, Hui Deng(邓辉)¹, Yulin Wu(吴玉林)^1,4, Yirong Jin(金贻荣)¹, Xiaobo Zhu(朱晓波)^1,4, Dongning Zheng(郑东宁)^1,3

1 Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 Department of Physics, Zhejiang University, Hangzhou 310027, China;
3 School of Physics, University of Chinese Academy of Sciences, Beijing 100190, China;
4 CAS Centre for Excellence and Synergetic Innovation Centre in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China

Received:2017-05-15 Online:2017-09-05 Published:2017-09-05
Contact: Xiaobo Zhu, Dongning Zheng E-mail:xbzhu16@ustc.edu.cn;dzheng@aphy.iphy.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 91321208, 11374344, 11404386, 11574380, and 11674376), the Ministry of Science and Technology of China (Grant Nos. 2014CB921401 and 2016YFA0300601), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB07010300).

摘要/Abstract

摘要：

We have fabricated two types of lumped-element Josephson parameter amplifiers (JPAs) by using a multilayer micro-fabrication process involving wet etching of Al films. The first type is a narrow band JPA which shows typical gain above 14 dB in a bandwidth around 35 MHz. The second type is a wideband JPA which is coupled to an input 50 Ω transmission line via an impedance transformer that changes the impedance from about 15 Ω on the non-linear resonator side to 50 Ω on the input transmission line side. The wideband JPA could operate in a 200 MHz range with a gain higher than 14 dB. The amplifiers were used for superconducting qubit readout. The results showed that the signal to noise ratio and hence the readout fidelity were improved significantly.

关键词: Josephson parameter amplifier, multilayer micro-fabrication, qubit state readout

Abstract:

Key words: Josephson parameter amplifier, multilayer micro-fabrication, qubit state readout

中图分类号: (Quantum state engineering and measurements)

42.50.Dv

42.50.Ex (Optical implementations of quantum information processing and transfer)

黄克强, 郭秋江, 宋超, 郑亚锐, 邓辉, 吴玉林, 金贻荣, 朱晓波, 郑东宁. Fabrication and characterization of ultra-low noise narrow and wide band Josephson parametric amplifiers[J]. 中国物理B, 2017, 26(9): 94203-094203.

Keqiang Huang(黄克强), Qiujiang Guo(郭秋江), Chao Song(宋超), Yarui Zheng(郑亚锐), Hui Deng(邓辉), Yulin Wu(吴玉林), Yirong Jin(金贻荣), Xiaobo Zhu(朱晓波), Dongning Zheng(郑东宁). Fabrication and characterization of ultra-low noise narrow and wide band Josephson parametric amplifiers[J]. Chin. Phys. B, 2017, 26(9): 94203-094203.

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Fabrication and characterization of ultra-low noise narrow and wide band Josephson parametric amplifiers

Fabrication and characterization of ultra-low noise narrow and wide band Josephson parametric amplifiers

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