Parametric Amplification at Ka Band via Nonlinear Dynamics in Superconducting 3D Cavities

被引：3
作者：
Banys, D. [1 ]
McCulloch, M. A. [1 ]
Azzoni, S. [1 ]
Cooper, B. [1 ]
May, A. J. [1 ,2 ,3 ]
Melhuish, S. J. [1 ]
Piccirillo, L. [1 ,4 ]
Wenninger, J. [1 ]
机构：
[1] Univ Manchester, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England
[2] STFC Daresbury Lab, Keckwick Lane, Warrington WA4 4AD, Cheshire, England
[3] Cockcroft Inst, Keckwick Lane, Warrington WA4 4AD, Cheshire, England
[4] Univ Appl Sci VUAS, ERI, VIRAC, Inzenieru St 101, LV-3601 Ventspils, Latvia
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 2020年 / 200卷 / 5-6期
关键词：
Ka band; Parametric amplifier; Superconducting 3D cavity; Circular waveguide; AMPLIFIERS; NOISE;
D O I：
10.1007/s10909-020-02439-w
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Modern parametric amplifiers are based on lithographically produced superconducting thin-film planar transmission line structures. These paramps rely on resonant structures with embedded nonlinear elements to stimulate intermodulation with a stronger pump tone that gives rise to signal gain when certain conditions are satisfied. Such paramps have not yet been realised in superconducting 3D waveguide resonators. Possible applications of these devices include detector systems that are based on 3D waveguide such as dark matter detectors and quantum computers. Reported here are the results of an investigation of a 30.64 GHz series circular waveguide resonance machined from bulk niobium showing parametric gain of up to 2 dB in the presence of a stronger pump tone 10 kHz above in frequency. The gain is largest on abrupt jumps of the transmission spectra of the resonance, which may be a result of weak-link formation on the superconducting surfaces.
引用
收藏
页码：295 / 304
页数：10
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