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    • Experimental Study of Elements of a Josephson Traveling-Wave Parametric Amplifier on SQUID Chains.

    R. A. Yusupov,L. V. Filippenko, M. Yu. Fominskiy,V. P. Koshelets

    Физика твердого тела（2022）

    Kotel’nikov Institute of Radio Engineering and Electronics

    Cited 1|Views11
    Abstract
    The issues of designing a Josephson traveling-wave parametric amplifier (JTWPA) based on a well-established technology of superconducting microcircuits with given and controlled parameters based on high-quality Nb-AlOx-Nb tunnel junctions are considered. This technology has been adapted and optimized to obtain structures with the required parameters and circuits with large number of tunnel junctions. To advance the technology, the basic elements of a promising JTWPA have been devel-oped, manufactured and studied. In direct current measurements, a number of super-conducting elements parameters were experimentally determined; these parameters are required for designing a JTWPA chips for microwave measurements. An original design of JTWPA based on a chain of SQUIDs in a coplanar line has been developed for implementation using the IRE niobium technology; the parameters of the main elements of the JTWPA have been determined. Keywords: Josephson travelling-wave parametric amplifiers (JTWPA), Josephson metamaterials (JMM), Josephson junctions (JJs), cold amplifier, coplanar lines, quantum noise, SIS, SQUIDs.
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    Josephson travelling-wave parametric amplifiers (JTWPA),Josephson metamaterials (JMM),Josephson junctions (JJs),cold amplifier,coplanar lines,quantum noise,SIS junctions,SQUID
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    Related Papers

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    Chat Paper
    【要点】：本文研究了基于成熟超导微电路技术的Josephson行波参量放大器（JTWPA）设计问题，并开发了一种基于SQUID链的新型JTWPA，实验确定了其关键参数。
    

    【方法】：利用高质Nb-AlOx-Nb隧道结技术，优化并适应了超导微电路技术，以制造出具有所需参数和大量隧道结的电路。
    

    【实验】：通过直流测量确定了超导元件的参数，这些参数对于微波测量中JTWPA芯片的设计至关重要；使用IRE铌技术，基于SQUID链的JTWPA原型被开发并确定了其主要元素的参数。实验未提及具体数据集名称。
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