Nonlinear Feedback in Josephson Circuit Optimization: Application to a Kerr-Reversal JTWPA
The study introduces a method to optimize Josephson-based nonlinear microwave devices by combining linear simulation with nonlinear harmonic balance simulations. It uses an iterative feedback loop where information from nonlinear responses updates the linear optimization metric, improving accuracy when pump effects are strong. This allows for finding better operating points than simple linear methods alone.