Figure 4
From: Controllable microwave three-wave mixing via a single three-level superconducting quantum circuit

R1(f) ≡ |I21(f)I32(f)| and R2(f) ≡ |I13(f)I32(f)| versus f are plotted in (a) and (b), respectively, for the same SFQC parameters as in Fig. 2.