Coherent Control of Multi-Dressed Four-Wave Mixing Autler-Townes Splitting

Zhenkun Wu, PeiYing Li, Zhaoyang Zhang +3 more

Gaoping Huang, Jia Sun, Weikang Feng +5 more

Ma Xiaoyu, Sang Suling

Abstract We investigate the coherent control of dressing interaction in four-wave mixing (FWM) in a Y-type four-level atomic system based on the dressed states theory. We study the density matrix equation acted by two dressing fields simultaneously governing FWM signal intensity and the eigenvalues under the dressed state formalism. It is shown that the peak position and intensity of Autler–Townes splitting both originate from the dressing interaction as the detuning of the probe field is scanned. Moreover, it is observed that the interaction could be controlled by the dressing fields. Such flexibly controlled nonlinear signal has potential applications in optical communication and quantum information processing.

Zhenkun, Wu, Yi-Qi +9 more

Yanpeng Zhang, Peiying Li, Huaibin Zheng +5 more

We report an observation of the self- and external-dressed Autler-Townes (AT) splitting in six-wave mixing (SWM) within an electromagnetically induce transparency window, which demonstrates the interaction between two coexisting SWM processes. The multi-dressed states induced by the nested interactions between many dressing fields and the five-level atomic system lead to the primary, secondary and triple AT splittings in the experiment. Such controlled multi-channel splitting of nonlinear optical signals can be used in a range of applications, e.g. the wavelength-demultiplexer in optical communication and quantum information processing.

Yanpeng Zhang, Zhiqiang Nie, Min Xiao