Third harmonic-mediated amplification in TWPA

IF 1.7 4区物理与天体物理 Q3 PHYSICS, APPLIED

Japanese Journal of Applied Physics Pub Date : 2026-02-18 DOI:10.1063/5.0297569

Emil Rizvanov, Samuel Kern, P. Neilinger, M. Grajcar

引用次数: 0

Abstract

In Josephson traveling-wave parametric amplifiers, higher-order harmonics of the pump tone and its sidebands are commonly present and typically regarded as parasitic. Consequently, most design efforts have focused on suppressing these harmonics. In spite of that, motivated by transient simulations, we extend the coupled-mode theory and demonstrate that the third harmonic can enhance amplifier performance, improving both gain and bandwidth. We show that the recently developed plasma oscillation-based amplifier is particularly well-suited for exploiting this effect. Its dispersion relation enables us to observe the phenomenon in transient numerical simulations using JoSIM and WRspice. These simulations reveal the improvement of the amplifier’s performance, specifically doubling the bandwidth and increasing the gain.

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第三次谐波介导的TWPA放大

在约瑟夫森行波参数放大器中，泵浦音及其边带的高阶谐波通常存在，并且通常被认为是寄生的。因此，大多数设计工作都集中在抑制这些谐波上。尽管如此，在瞬态仿真的激励下，我们扩展了耦合模式理论，并证明了三次谐波可以提高放大器的性能，提高增益和带宽。我们表明，最近开发的基于等离子体振荡的放大器特别适合利用这种效应。它的色散关系使我们能够用JoSIM和WRspice在瞬态数值模拟中观察到这一现象。这些仿真结果表明放大器的性能得到了改善，特别是带宽增加了一倍，增益增加了一倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Japanese Journal of Applied Physics 物理-物理：应用

CiteScore

3.00

自引率

26.70%

发文量

818

审稿时长

3.5 months

期刊介绍： The Japanese Journal of Applied Physics (JJAP) is an international journal for the advancement and dissemination of knowledge in all fields of applied physics. JJAP is a sister journal of the Applied Physics Express (APEX) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP). JJAP publishes articles that significantly contribute to the advancements in the applications of physical principles as well as in the understanding of physics in view of particular applications in mind. Subjects covered by JJAP include the following fields: • Semiconductors, dielectrics, and organic materials • Photonics, quantum electronics, optics, and spectroscopy • Spintronics, superconductivity, and strongly correlated materials • Device physics including quantum information processing • Physics-based circuits and systems • Nanoscale science and technology • Crystal growth, surfaces, interfaces, thin films, and bulk materials • Plasmas, applied atomic and molecular physics, and applied nuclear physics • Device processing, fabrication and measurement technologies, and instrumentation • Cross-disciplinary areas such as bioelectronics/photonics, biosensing, environmental/energy technologies, and MEMS