Controlled On-Chip Single-Photon Transfer Using Photonic Crystal Coupled-Cavity Waveguides

Figure 21

High 𝑄 cavity mode release and capture process. A shows the confined cavity with both barriers activated with an index of 3.3. B shows the opening of the inside cavity by index switching to 𝑛=3.4. With the second cavity’s outside barrier closed, C, the energy accumulates and is then trapped by closing the inner barrier of the second cavity in D.