Figure 3

The transition frequencies in the three-level graphene system shown in Fig. 1(b). The transition frequency ω 31 (ω 32) indicates the splitting gap between levels |1〉 and |3〉 (|2〉 and |3〉).

The transition frequencies in the three-level graphene system shown in Fig. 1(b). The transition frequency ω 31 (ω 32) indicates the splitting gap between levels |1〉 and |3〉 (|2〉 and |3〉).