Modulational instability of a resonantly polariton condensate in discrete lattices  

作　　者：漆伟 郭晓刚 董亮伟 张晓斐 Wei Qi;Xiao-Gang Guo;Liang-Wei Dong;Xiao-Fei Zhang(Department of Physics,Shaanxi University of Science and Technology,Xi'an 710021,China)

机构地区：[1]Department of Physics,Shaanxi University of Science and Technology,Xi'an 710021,China

出　　处：《Chinese Physics B》2023年第3期143-146,共4页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.11805116);the Natural Science Basic Research Plan in Shaanxi Province,China(Grant No.2023-JC-YB-037).

摘　　要：We study modulational instability of a resonantly polariton condensate in a discrete lattice.Employing a discrete gain-saturation model,we derive the dispersion relation for the modulational instability by means of the linear-stability analysis.Effects of the pumping strength,the nonlinearity,the strength of the detuning,and the coupling strength on the modulation instability are investigated.It is found that the interplay between these parameters will dramatically change the modulational instability condition.We believe that the predicted results in this work can be useful for future possible experiment of exciton-polariton condensate in lattices.

关 键 词：modulational instability polariton condensate discrete lattices 

分 类 号：O469[理学—凝聚态物理]