Electromagnetically induced transparency at optical nanofiber–cesium vapor interface Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0304203), the National Natural Science Foundation of China (Grant Nos. 61675120, 11434007, and 61875110), Project of the National Natural Science Foundation of China for Excellent Research Team (Grant No. 61121064), the Shanxi “1331 Project” Key Subjects Construction, PCSIRT, China (Grant No. IRT 17R70), and the 111 Project, China (Grant No. D18001). |
(a) Optical nanofiber with 500-nm diameter and 5-mm length is surrounded by hot Cs atoms. (b) Schematic energy level of ladder-type EIT system. The 852-nm laser is the probe field and the 794-nm laser is the control field. Δp and Δc are the frequency detunings of the probe laser and the control laser, respectively. |