Nonlinear characteristics of Ti, Nb, and NbN superconducting resonators for parametric amplifiers
Nonlinear characteristics of Ti, Nb, and NbN superconducting resonators for parametric amplifiers
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用于参量放大器的 Ti、Nb 和 NbN 超导谐振器的非线性特性
DOI：
10.1088/1361-6668/acf0f1
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发表时间：
2023
影响因子：
3.6
通讯作者：
Zhao S
中科院分区：
文献类型：
--
作者：
Zhao S
超导谐振器和参数放大器是动力学电感探测器阵列、用于其他超导测辐射热计的频域多路复用器、基于自旋系综的存储器和电路量子电动力学演示器等科学系统中的重要组成部分。在这篇文章中，我们报道了超导钛、Nb和NbN谐振器的微波测量及其作为参数放大器的应用。这些半波谐振器是在几乎相同的溅射和光刻条件下制造的，以确保材料性能的同类比较。我们报道了在转变温度、电阻率、限速非线性响应时间、非线性耗散、非线性电感的符号以及它们与温度和共振谐波的依赖关系方面的广泛的性质和行为。我们已经成功地将Nb和NbN谐振器作为高增益参数放大器运行，实现了大于20分贝的功率放大。我们已经证明，对于半波谐振器，不仅可以在基波共振中实现放大，还可以在高次谐波共振中实现放大。此外，对于具有高转变温度的材料，例如Nb和NbN，可以在
Superconducting resonators and parametric amplifiers are important components in scientific systems such as kinetic inductance detector arrays, frequency-domain multiplexers for other superconducting bolometers, spin-ensemble based memories, and circuit quantum electrodynamics demonstrators. In this paper, we report microwave measurements of superconducting Ti, Nb, and NbN resonators and their use as parametric amplifiers. These half-wave resonators were fabricated under near identical sputtering and lithographic conditions to ensure a like-for-like comparison of material properties. We report a wide range of properties and behaviours in terms of transition temperatures, resistivities, rate-limiting nonlinear response times, nonlinear dissipation, signs of the nonlinear inductances and their dependences on temperature and resonance harmonic. We have successfully operated Nb and NbN resonators as high gain parametric amplifiers, achieving greater than 20 dB of power amplification. We have shown that for a half-wave resonator, amplification can be realised not only in the fundamental resonance but also in the higher harmonic resonances. Further, for materials with high transition temperatures, eg Nb and NbN, amplification can be achieved at
演示具有动态电感行波参量放大器预放大功能的微波 SQUID 多路复用器
影响因子：
5.7
作者：
M. Vissers;M. Malnou;Jiansong Gao;J. Hubmayr;J. Wheeler;J. Mates;B. Dober;G. Hilton;L. Vale;J. Ullom
通讯作者：
J. Ullom