Broadband merged-element Josephson parametric amplifier

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-06-17 DOI:10.1063/5.0259358

Yuting Sun, Xianke Li, Qingyu Wang, Tairong Bai, Xudong Liao, Dong Lan, Jie Zhao, Yang Yu

引用次数: 0

Abstract

Broadband quantum-limited amplifiers are essential for quantum information processing, yet challenges in design and fabrication continue to hinder their widespread applications. Here, we introduce the broadband merged-element Josephson parametric amplifier in which the discrete parallel capacitor is directly integrated with the Josephson junctions. This merged-element design eliminates the shortcomings of discrete capacitors, simplifying the fabrication process, reducing the need for high-precision lithography tools and ensuring compatibility with standard superconducting qubit fabrication procedures. Experimental results demonstrate a gain of 15 dB over a 500 MHz bandwidth, a mean saturation power of −116 dBm, and near-quantum-limited noise performance. This robust readily implemented parametric amplifier holds significant promise for broader applications in superconducting quantum information and the advancement of quantum computation.

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宽带合并元件约瑟夫森参数放大器

宽带量子限制放大器对于量子信息处理至关重要，但设计和制造方面的挑战继续阻碍其广泛应用。在这里，我们介绍了宽带合并元件约瑟夫森参数放大器，其中离散并联电容器与约瑟夫森结直接集成。这种合并元件设计消除了分立电容器的缺点，简化了制造过程，减少了对高精度光刻工具的需求，并确保与标准超导量子比特制造程序的兼容性。实验结果表明，在500 MHz带宽上增益为15 dB，平均饱和功率为- 116 dBm，噪声性能接近量子限制。这种鲁棒易于实现的参数放大器在超导量子信息和量子计算的进步中具有更广泛的应用前景。

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.