Numerical analysis of a three-wave-mixing Josephson traveling-wave parametric amplifier with engineered dispersion loadings

被引：7

作者：

Gaydamachenko, Victor ^{[1
]}

Kissling, Christoph ^{[1
]}

Dolata, Ralf ^{[1
]}

Zorin, Alexander B. ^{[1
]}

机构：

[1] Phys Tech Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2022年 / 132卷 / 15期

关键词：

NOISE; AMPLIFICATION;

D O I：

10.1063/5.0111111

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The recently proposed Josephson traveling-wave parametric amplifier (JTWPA) based on a ladder transmission line consisting of radio-frequency superconducting quantum interference devices and exploiting three-wave mixing has great potential in achieving both a gain of 20 dB and a flat bandwidth of at least 4 GHz. To realize this concept in practical amplifiers, we model the advanced JTWPA circuit with periodic modulation of the circuit parameters (engineered dispersion loadings), which allow the basic mixing process, i.e., omega(s) = omega(p) - omega(i), where omega(s), omega(p), and omega(i) are the signal, the pump, and the idler frequencies, respectively, and efficiently suppress propagation of unwanted higher tones, including omega(2p) = 2 omega(p), omega(p+s) = omega(p) + omega(s), omega(p+i) = omega(p) + omega(i), etc. The engineered dispersion loadings allow achieving a sufficiently wide 3 dB-bandwidth from 3 to 9 GHz combined with a reasonably small ripple (+/- 2 dB) in the gain-vs-frequency dependence.

引用

页数：11

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