Josephson parametric amplifier with third-order resonator impedance matching

IF 3.8 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2026-10-12 DOI:10.1063/5.0347297

Quan Zuo,Kaixuan Zhang,Wenqu Xu,Junliang Jiang,Tingting Guo,Shiyao Yang,Tianshi Zhou,Mingyuan Yu,Yongyang Yu,Junzhou Zhang,Binglin Li,Jiyuan Zhu,Jiazheng Pan,Jinpeng Li,Huabing Wang,Chunhai Cao,Guozhu Sun,Peiheng Wu

引用次数: 0

Abstract

We propose and realize a multi-resonator coupled impedance-matched Josephson parametric amplifier. Parallel plate capacitors serve as couplers to achieve coupling between the nonlinear resonator containing the Josephson loop and the half-wavelength resonator, and between the half-wavelength resonators themselves. By precisely designing each coupling strength, we effectively extend the amplifier's bandwidth. Through a combination of circuit-level and electromagnetic field simulations, we optimize the structural parameters of the resonators and capacitors. The two measured devices have 15 dB gain with a bandwidth of 1.3 GHz and 20 dB gain with a bandwidth of 1.1 GHz, respectively, with near-quantum-limited noise temperatures.

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具有三阶谐振器阻抗匹配的约瑟夫森参数放大器

提出并实现了一种多谐振腔耦合阻抗匹配的约瑟夫森参量放大器。并联板电容器作为耦合器，实现含约瑟夫森环的非线性谐振腔与半波长谐振腔之间以及半波长谐振腔本身之间的耦合。通过对各耦合强度的精确设计，有效地延长了放大器的带宽。通过电路级和电磁场模拟相结合的方法，优化了谐振器和电容器的结构参数。这两个被测器件的增益分别为15db，带宽为1.3 GHz，增益为20db，带宽为1.1 GHz，噪声温度接近量子限制。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.