Fig. 5
Tunability in Rabi splitting energy (ħΩR) with tailored dispersions. a Dispersion relations in terms of (i) ħω versus Re(k) and (ii) ħRe(ω) versus k by using the COM model with simulated parameters (see supporting information) with varied MNW diameter (D) of (from right to left, colors from dark to light) 50, 75, 100, 150, 200, 300, 400 nm, respectively, showing less profound back-bending features and smaller ħΩR with increasing diameters. Gray dashed lines: exciton resonance. b ħΩR versus D. The numerically obtained result (squared green line) coincides well with one calculated using Eq. (5) (dotted pale green line). Despite the reduced ħΩR, the strong coupling criterion is fulfilled for every diameter presented compared to the overall damping of the coupled system (gray dashed line)