%A Jian-Jun Zhang(张建军), Hui-Fang Wang(王慧芳), Jun-Hua Hou(候俊华) %T Enhanced second harmonic generation in a two-dimensional optical micro-cavity %0 Journal Article %D 2018 %J Chin. Phys. B %R 10.1088/1674-1056/27/3/034207 %P 34207-034207 %V 27 %N 3 %U {https://cpb.iphy.ac.cn/CN/abstract/article_120455.shtml} %8 2018-03-05 %X

We introduce a two-dimensional Bose-Einstein condensation model consisting of massive photon and photon-pair. Based on the new nonlinear model, the traditional process of second harmonics generation is reinvestigated. In order to describe the process, a new quantum phase, the harmonic phase, is introduced. The order parameter of the new physical phase is also given in this paper.