Bistable four-wave mixing response in a semiconductor quantum dot coupled to a photonic crystal nanocavity

作者：Li, Jian Bo^*; Xiao, Si; Liang, Shan; He, Meng Dong; Luo, Jian Hua; Kim, Nam Chol; Chen, Li Qun

来源：Optics Express, 2017, 25(21): 25663-25673.

DOI：10.1364/OE.25.025662

We perform a theoretical study of the bistable four-wave mixing (FWM) response in a coupled system comprised of a semiconductor quantum dot (SQD) and a photonic crystal (PC) nanocavity in which the SQD is embedded. It is shown that the shape of the FWM spectrum can switch among single-peaked, double-peaked, triple-peaked, and four-peaked arising from the vacuum Rabi splitting and the exciton-nanocavity coupling. Especially, we map out bistability phase diagrams within a parameter subspace of the system, and find that it is easy to turn on or off the bistable FWM response by only adjusting the excitation frequency or the pumping intensity. Our results offer a feasible means for measuring the SQD-PC nanocavity coupling strength and open a new avenue to design optical switches and memories.

• 出版日期2017-10-16
• 单位中南大学; 湖南师范大学; 深圳大学