期刊
PHYSICAL REVIEW APPLIED
卷 8, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.8.024012
关键词
-
资金
- German Research Foundation [SFB 631, FE 1564/1-1]
- EU project PROMISCE
- Elite Network of Bavaria through ExQM
- International Max Planck Research School Quantum Science and Technology,
- JST ERATO [JPMJER1601]
- JSPS KAKENHI [26220601, 15K17731]
- ImPACT Program of Council for Science
- EU project SCALEQIT
- Grants-in-Aid for Scientific Research [15K17731, 26220601] Funding Source: KAKEN
Josephson parametric amplifiers (JPAs) have become key devices in quantum science and technology with superconducting circuits. In particular, they can be utilized as quantum-limited amplifiers or as a source of squeezed microwave fields. Here, we report on the detailed measurements of five flux-driven JPAs exhibiting a hysteretic dependence of the resonant frequency on the applied magnetic flux. We model the measured characteristics by numerical simulations based on the two-dimensional potential landscape of the dc superconducting quantum interference devices, which provide the JPA nonlinearity for a nonzero screening parameter beta(L) > 0 and demonstrate excellent agreement between the numerical results and the experimental data. Furthermore, we study the nondegenerate response of different JPAs and accurately describe the experimental results with our theory.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据