For the recent VSC experiment by Ebbesen et al. , the typical values for these parameters are τ c ≈ 100 fs and shows the molecular phonon bath spectral density J ν (ω) (dark blue) and the effective spectral density J eff (ω) (red), which has the Brownian oscillator spectral density (Eq. 14). Later through the quantum dynamics simulations, we find that the spectral density, J eff (ω), can accelerate the state-to-state quantum transitions |ν L → |ν L and |ν R → |ν R (as indicated by the red arrows in Fig. ) when its peak frequency is in resonance with the quantum vibration frequency ω 0 , causing resonance enhancement effects. Detailed discussions can be found in the results of Fig. and Fig. .