Figure 5
From: Optomechanically-induced transparency in parity-time-symmetric microresonators
The delay or advance of the probe light in active-passive-coupled resonators, characterized by positive or negative group delays.
(a) The PT-symmetric regime with κ/γ < 1. (b) The PT-breaking regime with κ/γ ≥ 1. In these calculations we have taken Δp = 0, J/γ = 1.
