Flux-driven Josephson parametric amplifiers: Hysteretic flux response and nondegenerate gain measurements

@inproceedings{Pogorzalek2016FluxdrivenJP,
  title={Flux-driven Josephson parametric amplifiers: Hysteretic flux response and nondegenerate gain measurements},
  author={Stefan Pogorzalek and K. G. Fedorov and Liang Cai Zhong and Jan G{\"o}tz and Friedrich Wulschner and Markus Fischer and Philipp Eder and Edwar Xie and Kunihiro Inomata and Tsuyoshi Yamamoto and Yasunobu Nakamura and Achim Marx and Frank Deppe and Richard Dr Gross},
  year={2016}
}
Josephson parametric amplifiers (JPA) 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, three of them exhibiting a hysteretic dependence of the resonant frequency versus the applied magnetic flux. We model the measured characteristics by numerical simulations based on the two… Expand