Hwang Jongmin, Park Jiho, Kim Heewoo, Moon Han Seb
Opt Express. 2020 Nov 23;28(24):35927-35936. doi: 10.1364/OE.410142.
We investigate stimulated four-wave mixing (FWM) in the 6S-6P-8S open transition of a warm Cs atomic ensemble. Despite the absence of the two-photon cycling transition, we measure high-contrast FWM signals in the 6P-8S transition between the upper excited states according to the frequency detuning and powers of the coupling and driving lasers. The FWM light generation in the upper excited states is interpreted as the FWM phenomena induced by the driving laser of the 6S-6P transition from the cascade-type two-photon coherent atomic ensemble with the coupling and pump lasers. We believe that this work can contribute to the development of hybrid photonic quantum networks between photonic quantum states generated from different atomic systems.
我们研究了热铯原子系综6S - 6P - 8S开放跃迁中的受激四波混频（FWM）。尽管不存在双光子循环跃迁，但根据耦合激光和驱动激光的频率失谐及功率，我们在上能级激发态之间的6P - 8S跃迁中测量到了高对比度的FWM信号。上能级激发态中的FWM光产生被解释为由来自级联型双光子相干原子系综的6S - 6P跃迁的驱动激光与耦合激光和泵浦激光所诱导的FWM现象。我们相信这项工作有助于不同原子系统产生的光子量子态之间的混合光子量子网络的发展。
