Probe frequency- and field intensity-sensitive coherent control effects in an EIT-based periodic layered medium |
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| Institution: | Teh-Chau Liau 1 , Jin-Jei Wu 2 , Jianqi Shen 3,4 , and Tzong-Jer Yang 2 1 College of Engineering, Chung Hua University, Hsinchu 30012, China 2 Department of Electrical Engineering, Chung Hua University, Hsinchu 30012, China 3 Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentations, Zhejiang University, Hangzhou 310058, China 4 Joint Research Laboratory of Optics of Zhejiang Normal University and Zhejiang University, Hangzhou 310058, China |
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| Abstract: | A periodic layered medium, with unit cells consisting of a dielectric and an electromagnetically-induced transparency (EIT)-based atomic vapor, is designed for light propagation manipulation. Considering that a destructive quantum interference relevant to a two-photon resonance emerges in EIT-based atoms interacting with both control and probe fields, an EIT-based periodic layered medium exhibits a flexible frequency-sensitive optical response, where a very small variation in the probe frequency can lead to a drastic variation in reflectance and transmittance. The present EIT-based periodic layered structure can result in controllable optical processes that depend sensitively on the external control field. The tunable and sensitive optical response induced by the quantum interference of a multi-level atomic system can be applied in the fabrication of new photonic and quantum optical devices. This material will also open a good perspective for the application of such designs in several new fields, including photonic microcircuits or integrated optical circuits. |
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