“…By turning E 2 on and off, we can obtain four-wave mixing (FWM) cavity mode and sixwave mixing (SWM) cavity mode [20], respectively. First, without E 2 , a FWM process satisfying the phase-matching condition k F W M = k 1 + k 3 − k 3 [21], [22] occurs in the -type three-level subsystem |0 ↔ |1 ↔ |3 . The resonant transition frequencies of |0 ↔ |1 , |1 ↔ |2 and |1 ↔ |3 are defined as 1 , 2 and 3 , respectively.…”