Evidence of Autler-Townes splitting in high-order nonlinear processes.
We demonstrate Autler-Townes (AT) splitting of four-wave mixing in an electromagnetically induced transparency window, which results from the destructive interference between a three-photon process and a five-photon process. The primary and secondary AT splittings are achieved via induced atomic coherence in a four-level Y-type atomic system. Theoretical calculations fit well with the experimentally measured results. Such controlled multichannel splitting of nonlinear optical signals can have potential applications in optical communication and quantum information processing.
Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Labof Information Photonic Technique, Xi’an Jiaotong University, Xi’an 710049, China. ypzhang@mail.xjtu.edu.cn
Yanpeng
Y
Zhang
Zhiqiang
Z
Nie
Zhiguo
Z
Wang
Changbiao
C
Li
Feng
F
Wen
Min
M
Xiao