期刊
APPLIED PHYSICS LETTERS
卷 120, 期 8, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0080314
关键词
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资金
- NKRDP of China [2016YFA0301801]
- NSFC [11474154, 61521001]
- PAPD
- Dengfeng Project B of Nanjing University
- Henan Provincial Science and Technology Research Project [222102520044]
We propose a fishbone-like lumped-element artificial transmission line to overcome impedance mismatch and design a broadband Josephson parametric amplifier suitable for engineering applications of superconducting circuit quantum electrodynamics.
We present a fishbone-like lumped-element artificial transmission line to overcome impedance mismatch in a reflection-type Josephson parametric amplifier between a nonlinear resonator and an external transmission line. Using this easily prepared architecture, we design and fabricate a broadband Josephson parametric amplifier, which has gain in an excess of 20 dB with a bandwidth of hundreds of MHz. Furthermore, by varying the working point of the device, the operating frequency of amplification can be tuned in a wide frequency range of 1 GHz while the amplifier operates in the mode of either three-wave mixing or four-wave mixing. Such a parametric amplifier is suitable for engineering applications of superconducting circuit quantum electrodynamics.
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