The optical nonreciprocal response based on a four-mode optomechanical system
Wang Jing †
       

The transmission probabilities |T12|2 (blue dashed lines) and |T21|2 (red solid lines) versus ω/2π with ϕ = − π/2. (a) V = 0.1γm3, (b) V = 0.5 γm3, (c) V = γm3, (d) V = 12γm3. The other parameters are the same as those in Fig. 2.