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首页> 外文期刊>Applied Physics Letters >Traveling wave parametric amplifier with Josephson junctions using minimal resonator phase matching
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Traveling wave parametric amplifier with Josephson junctions using minimal resonator phase matching

机译：具有最小谐振器相位匹配的带有约瑟夫森结的行波参数放大器

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摘要

Josephson parametric amplifiers have become a critical tool in superconducting device physics due to their high gain and quantum-limited noise. Traveling wave parametric amplifiers (TWPAs) promise similar noise performance, while allowing for significant increases in both bandwidth and dynamic range. We present a TWPA device based on an LC-ladder transmission line of Josephson junctions and parallel plate capacitors using low-loss amorphous silicon dielectric. Crucially, we have inserted λ/4 resonators at regular intervals along the transmission line in order to maintain the phase matching condition between pump, signal, and idler and increase gain. We achieve an average gain of 12 dB across a 4 GHz span, along with an average saturation power of -92 dBm with noise approaching the quantum limit.
机译：约瑟夫参量放大器因其高增益和量子受限的噪声而已成为超导器件物理学中的关键工具。行波参量放大器（TWPA）保证了相似的噪声性能，同时允许带宽和动态范围的显着增加。我们提出了一种基于约瑟夫逊结的LC梯形传输线和使用低损耗非晶硅电介质的平行板电容器的TWPA器件。至关重要的是，我们沿着传输线以规则的间隔插入了λ/ 4谐振器，以维持泵，信号和惰轮之间的相位匹配条件并增加增益。我们在4 GHz跨度上实现了12 dB的平均增益，以及-92 dBm的平均饱和功率，并且噪声接近量子极限。

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  • 来源
    《Applied Physics Letters》 |2015年第24期|242601.1-242601.5|共5页
  • 作者

    T. C. White; J. Y. Mutus; I.-C. Hoi; R. Barends; B. Campbell; Yu Chen; Z. Chen; B. Chiaro; A. Dunsworth; E. Jeffrey; J. Kelly; A. Megrant; C. Neill; P. J. J. OMalley; P. Roushan; D. Sank; A. Vainsencher; J. Wenner; S. Chaudhuri; J. Gao; John M. Martinis;

  • 作者单位

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA,Google, Santa Barbara, California 93117, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA,Google, Santa Barbara, California 93117, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA,Google, Santa Barbara, California 93117, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA,Google, Santa Barbara, California 93117, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA,Department of Materials, University of California, Santa Barbara, California 93106, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA,Google, Santa Barbara, California 93117, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA,Google, Santa Barbara, California 93117, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA;

    Department of Physics, Stanford University, Stanford, California 94305, USA;

    National Institute of Standards and Technology, Boulder, Colorado 80305, USA;

    Department of Physics, University of California, Santa Barbara, California 93106-9530, USA,Google, Santa Barbara, California 93117, USA;

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