Modulational instability and excitations in circular-symmetry exciton-polariton condensates

Haijun Chen; Zhengliang Liu; Hua Wang; Jiao Zhang

doi:10.1117/12.2619582

27 March 2022 Modulational instability and excitations in circular-symmetry exciton-polariton condensates

Haijun Chen, Zhengliang Liu, Hua Wang, Jiao Zhang

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121690C (2022) https://doi.org/10.1117/12.2619582
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

We investigate the stability and excitations of two-dimensional circular-symmetry exciton-polariton condensates. The system is described by the circular-symmetry dissipative Gross-Pitaevskii (GP) equation based on the meanfield theory. The excitation properties around the steady-state is analytically calculated by means of the standard Bogoliubov-de Gennes (BdG) approach. We discuss the stability and modulational instability conditions which are determined by the parameters of the system and the parameters that characterize the Gaussian steady-state. We find that, the square of a parameter ¯ι plays a crucial role in characterizing the stability criterion and the excitaion spectrum.

Citation Download Citation

Haijun Chen, Zhengliang Liu, Hua Wang, and Jiao Zhang "Modulational instability and excitations in circular-symmetry exciton-polariton condensates", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121690C (27 March 2022); https://doi.org/10.1117/12.2619582

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