Perfect Optical Nonreciprocity with Mechanical Driving in a Three-Mode Optomechanical System *

Li-Hua Zhao,Xian-Li Li,He-Lin Lu,Xue-Dong Tian

Fig. 1 (Color online) (a) Schematic of the nonreciprocal system. (b) Athree-mode optomechanical system with a mechanical mode interactedwith two optical modes. Two strong coupling fields (probe fields) with amplitudes $\varepsilon_{c}$ and$\varepsilon_{d}$ ($\varepsilon_{L}$ and $\varepsilon_{R}$) are used to drivethe cavity modes $c_{1}$ and $c_{2}$ respectively. Meanwhile, the mechanical mode is driven by a weak field with amplitude $\varepsilon_{B}$.