原子气室中四波混频线型的实验研究

The Experimental Investigation of the Line Shape of the Four-wave Mixing in the Atomic Vapor Cell

理论上利用双边费曼图对四波混频过程进行了研究,该方法可直观清晰地展示光与原子相互作用的物理过程。计算了四波混频过程的色散性质。实验上研究了85 Rb原子D2线的四波混频线型,并且对实验结果进行了拟合,两者符合较好。对四波混频线型的研究可加深对四波混频过程的理解,从而促进四波混频过程在量子信息研究中的应用。

Theoretically, the four-wave mixing process is studied according to the double-sided Feynman diagram, which can show the physical process of the atom-light interaction clearly. And the susceptibility is calculated. The line shape of the transmission of the four-wave mixing at 8SRb D2 line is experimentally investigated, and the theoretical calculation fits well with the experimental data. The study of the line shape of the four-wave mixing process can enhance the understanding of the nonlinear process, and is helpful for the usage of four-wave mixing in the quantum information research.