摘要
We study the four-wave mixing （FWM） in a double-Λ atomic system where two strong continuous-wave pump lasers and a weak pulsed probe laser produce an FWM generated pulse. We show that both the probe and FWM generated fields may evolve into bright and dark solitons with the same shape and the same ultraslow group velocity.
We study the four-wave mixing （FWM） in a double-Λ atomic system where two strong continuous-wave pump lasers and a weak pulsed probe laser produce an FWM generated pulse. We show that both the probe and FWM generated fields may evolve into bright and dark solitons with the same shape and the same ultraslow group velocity.
基金
Supported by the National Natural Science Foundation of China Grants Nos 60478029, 10125419, and 10575040, and the National Fundamental Research Programme of China under Grant Nos 2005CB724508 and 2001CB309310.
