Gang Chen,1,2,3 Ming Gong,1 and Chuanwei Zhang1,* 1Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164 USA 2Department of Physics, Shaoxing University, Shaoxing 312000, People’s Republic of China 3State Key Laboratory of Quantum Optics and Quantum Optics Devices, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, People’s Re...