Perturbation-driven echo-like superfluorescence in perovskite superlattices  

作　　者：Qiangqiang Wang Jiqing Tan Qi Jie Hongxing Dong Yongsheng Hu Chun Zhou Saifeng Zhang Yichi Zhong Shuang Liang Long Zhang Wei Xie Hongxing Xu 

机构地区：[1]East China Normal University,School of Physics and Electronic Science,State Key Laboratory of Precision Spectroscopy,Shanghai,China [2]Chinese Academy of Sciences,Shanghai Institute of Optics and Fine Mechanics,Key Laboratory of Materials for High-Power Laser,Shanghai,China [3]Shanghai University,Department of Physics,Shanghai,China [4]Wuhan University,School of Physics and Technology,Center for Nanoscience and Nanotechnology,Wuhan,China [5]University of Chinese Academy of Sciences,Hangzhou Institute for Advanced Study,Hangzhou,China [6]Chongqing Institute of East China Normal University,Chongqing Key Laboratory of Precision Optics,Chongqing,China

出　　处：《Advanced Photonics》2023年第5期26-32,共7页先进光子学（英文）

基　　金：supported by the Ministry of Science and Technology of China(Grant No.2021YFA1401100);the National Natural Science Foundation of China(Grant Nos.12174112,61925506,12374297,and 62305078);the Natural Science Foundation of Shanghai(Grant Nos.23ZR1419800 and 20JC1414605);Chongqing and Zhejiang Province(Nos.2023NSCQ-MSX1489 and TD2020002).

摘　　要：The collective response of macroscopic quantum states under perturbation is widely used to study quantum correlations and cooperative properties,such as defect-induced quantum vortices in Bose–Einstein condensates and the non-destructive scattering of impurities in superfluids.Superfluorescence(SF),as a collective effect rooted in dipole–dipole cooperation through virtual photon exchange,leads to the macroscopic dipole moment(MDM)in high-density dipole ensembles.However,the perturbation response of the MDM in SF systems remains unknown.Echo-like behavior is observed in a cooperative exciton ensemble under a controllable perturbation,corresponding to an initial collapse followed by a revival of the MDM.Such a dynamic response could refer to a phase transition between the macroscopic coherence regime and the incoherent classical state on a time scale of 10 ps.The echo-like behavior is absent above 100 K due to the instability of MDM in a strongly dephased exciton ensemble.Experimentally,the MDM response to perturbations is shown to be controlled by the amplitude and injection time of the perturbations.

关 键 词：SUPERFLUORESCENCE POLARITON photoluminescence EXCITON 

分 类 号：O431.2[机械工程—光学工程]