Cavity-induced coherence phenomena in a Josephson parametric amplifier
Ya-peng Lu,
Jia-zheng Pan,
Xing-yu Wei,
Jun-liang Jiang,
Sheng Lu,
Zi-shuo Li,
Xue-cou Tu,
Lin Kang,
Chun-hai Cao,
Hua-bing Wang,
Jian Chen,
Wei-wei Xu,
Guo-zhu Sun,
Pei-heng Wu
Affiliations
Ya-peng Lu
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Jia-zheng Pan
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Xing-yu Wei
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Jun-liang Jiang
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Sheng Lu
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Zi-shuo Li
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Xue-cou Tu
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Lin Kang
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Chun-hai Cao
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Hua-bing Wang
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Jian Chen
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Wei-wei Xu
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Guo-zhu Sun
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
Pei-heng Wu
Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China and Purple Mountain Laboratories, Nanjing 211111, China
By adjusting the frequency of the cavity, we perform a microwave reflection measurement and directly probe the coherence and interference effects in a phase-sensitive Josephson parametric amplifier. We demonstrate the shift in the peak and the dip in the reflection spectra of the amplifier, which operates in the phase-sensitive mode. The behavior of the shift can be precisely controlled by tuning the pump power, the frequency of the cavity, and the relative phase between the incident signal and pump field. Theoretical simulations are in good agreement with the experimental results. These results provide an alternative way of controlling the parametric process by adjusting the frequency of the cavity.
