Coherent Controlling Single Photon Asymmetric Transmission in the Atom Chirally Coupled Waveguide System*

Wei Hu,Xiao-San Ma,Bing Wang,Xian-Shan Huang,Mu-Tian Cheng

Fig. 1 (Color online) The system considered in the manuscript. $\Lambda$ system interacting with a one-dimensional waveguide. The transition between $|a\rangle$ and $|b\rangle$ chiral couples to the waveguide. The transition between $|b\rangle$ and $|c\rangle$ is resonantly driven by two coherent fields. The phase difference between the two coherent fields is $\theta$.