Fabrication and characterization of ultra-low noise narrow and wide band Josephson parametric amplifiers
We have fabricated two types of lumped-element Josephson parameter amplifiers（JPAs） by using a multilayer microfabrication process involving wet etching of Al films. The first type is a narrow band JPA which shows typical gain above14 dB in a bandwidth around 35 MHz. The second type is a wideband JP...
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| Published in | Chinese physics B Vol. 26; no. 9; pp. 198 - 203 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.08.2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 |
| DOI | 10.1088/1674-1056/26/9/094203 |
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| Abstract | We have fabricated two types of lumped-element Josephson parameter amplifiers（JPAs） by using a multilayer microfabrication process involving wet etching of Al films. The first type is a narrow band JPA which shows typical gain above14 dB in a bandwidth around 35 MHz. The second type is a wideband JPA which is coupled to an input 50Ω transmission line via an impedance transformer that changes the impedance from about 15 Ω on the non-linear resonator side to 50 Ωon the input transmission line side. The wideband JPA could operate in a 200 MHz range with a gain higher than 14 d B.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. |
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| AbstractList | We have fabricated two types of lumped-element Josephson parameter amplifiers（JPAs） by using a multilayer microfabrication process involving wet etching of Al films. The first type is a narrow band JPA which shows typical gain above14 dB in a bandwidth around 35 MHz. The second type is a wideband JPA which is coupled to an input 50Ω transmission line via an impedance transformer that changes the impedance from about 15 Ω on the non-linear resonator side to 50 Ωon the input transmission line side. The wideband JPA could operate in a 200 MHz range with a gain higher than 14 d B.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. |
| Author | 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 |
| AuthorAffiliation | Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China Department of Physics, Zhejiang University, Hangzhou 310027, China School of Physics, University of Chinese Academy of Sciences, Beijing 100190, China CAS Centre for Excellence and Synergetic Innovation Centre in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China |
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| CitedBy_id | crossref_primary_10_1088_1674_1056_ac0420 crossref_primary_10_1109_TASC_2020_2985650 crossref_primary_10_1126_science_aaw1611 crossref_primary_10_7498_aps_70_20202121 crossref_primary_10_1063_5_0230973 crossref_primary_10_1088_1674_1056_ac280c crossref_primary_10_1063_5_0250918 crossref_primary_10_1088_1674_1056_abeee6 crossref_primary_10_1088_1674_1056_abc2bb crossref_primary_10_1088_1674_1056_ab4578 crossref_primary_10_1103_PhysRevLett_128_040403 crossref_primary_10_7498_aps_71_20211865 crossref_primary_10_1007_s10948_018_4959_2 crossref_primary_10_1103_PhysRevApplied_21_034055 crossref_primary_10_1088_1674_1056_ac0796 crossref_primary_10_7498_aps_67_20180845 |
| Cites_doi | 10.1063/1.3570693 10.1103/PhysRevB.83.134501 10.1103/PhysRevLett.93.207002 10.1103/PhysRevB.68.024510 10.1103/PhysRevD.26.1817 10.1038/nature09035 10.1038/nphys2385 10.1103/PhysRevLett.112.190504 10.1002/352760278X 10.1038/nphys1090 10.1103/PhysRevA.76.042319 10.1103/PhysRevA.39.2519 10.1103/RevModPhys.82.1155 10.1103/PhysRevLett.118.210504 10.1126/science.285.5430.1036 10.1364/JOSAB.4.001551 10.1063/1.4821136 10.1038/nphys1400 10.1103/PhysRevLett.111.080502 |
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| Notes | We have fabricated two types of lumped-element Josephson parameter amplifiers（JPAs） by using a multilayer microfabrication process involving wet etching of Al films. The first type is a narrow band JPA which shows typical gain above14 dB in a bandwidth around 35 MHz. The second type is a wideband JPA which is coupled to an input 50Ω transmission line via an impedance transformer that changes the impedance from about 15 Ω on the non-linear resonator side to 50 Ωon the input transmission line side. The wideband JPA could operate in a 200 MHz range with a gain higher than 14 d B.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. 11-5639/O4 Josephson parameter amplifier multilayer micro-fabrication qubit state readout |
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| References | 24 25 27 Yamamoto T (19) 2008; 93 Reed M D (8) 2010; 105 Lin Z R (16) 2013; 103 Sank D T (23) 2014 11 12 13 Song C (26) 2017 15 Reed M D (14) 2010; 105 17 18 1 Zhong Y P (10) 2013; 22 Wu Y L (22) 2013; 22 2 3 4 5 6 7 9 20 21 |
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| SubjectTerms | 制备 加工过程 宽带 湿法刻蚀 窄带 读出放大器 超低噪声 输入线路 |
| Title | Fabrication and characterization of ultra-low noise narrow and wide band Josephson parametric amplifiers |
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