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Coherent control of a light field with electromagnetically induced transparency in a dark state Raman coherent tripod system |
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| Authors: | Yongyao Li Huarong Zhang Yongzhu Chen |
| Affiliation: | a Department of Applied Physics, South China Agricultural University, Guangzhou 510642, China b State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China c Department of Experiment, Guangdong University of Technology, Guangzhou 510006, China d School of Electro-Mechanic Engineering, Guangdong Polytechnic Normal University, Guangzhou 510665, China |
| Abstract: | A dark state superposition is employed and formed a tripod-like system. A weak probe pulse propagates in it can experience a crossover from absorption to transparent and then to amplification, and its group velocity can be controlled in any desired speed by determining the initial states of the dark state superposition. |
| Keywords: | 32.80.Ct 42.50.Dv 42.50.Gy 42.50.Hz |
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