4 papers
Autonomous Quantum Error Correction in a Four-Photon Kerr Parametric Oscillator
Sangil Kwon, Shohei Watabe, Jaw-Shen Tsai
Autonomous quantum error correction has gained considerable attention to avoid complicated measurements and feedback. Despite its simplicity compared with the conventional measurem…
Magnetic hysteresis of a superconducting microstrip resonator with a high edge barrier
Sangil Kwon, Yong-Chao Tang, Hamid R. Mohebbi +2
We investigate the magnetic hysteresis of a superconducting microstrip resonator with a high edge barrier. We measure the magnetic hysteresis while either sweeping a magnetic field…
Engineering Nonlinear Response of Superconducting Niobium Microstrip Resonators via Aluminum Cladding
Sangil Kwon, Yong-Chao Tang, Hamid R. Mohebbi +3
In this work, we find that Al cladding on Nb microstrip resonators is an efficient way to suppress nonlinear responses induced by local Joule heating, resulting in improved microwa…
Magnetic Field Dependent Microwave Losses in Superconducting Niobium Microstrip Resonators
Sangil Kwon, Anita Fadavi Roudsari, Olaf W. B. Benningshof +8
We describe an experimental protocol to characterize magnetic field dependent microwave losses in superconducting niobium microstrip resonators. Our approach provides a unified vie…