| SPECIAL TOPIC — Exciton Physics: Fundamentals, materials and devices |
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Quench dynamics of Anderson-localized interacting exciton-polaritons |
| Zhi-Hao Sun(孙志豪)1, Yong-Jia Chong(冲勇嘉)1, Yu Guan(管煜)1, Zheng-Ye Wang(王正叶)1, Meng Chen(陈猛)1, Lei Chen(陈雷)2,†, and Xingran Xu(许星然)1,‡ |
1 School of Science, Jiangnan University, Wuxi 214122, China; 2 School of Information, Hunan University of Humanities, Science and Technology, Loudi 417000, China |
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Abstract Exciton-polaritons, formed through strong coupling between photons and excitons, exhibit unique characteristics such as an extremely small effective mass and a propensity to form Bose-Einstein condensates. The dynamics of these condensates are governed by a coupled system of equations that describe the condensate wavefunction and the excitonic reservoir density. Using imaginary-time evolution, the ground state of the condensate in a quasi-periodic potential is determined, revealing a transition from localized to delocalized states as the nonlinearity increases. After quenching the interaction strength, localized condensates with weak nonlinearity propagate without significant distortion, whereas those with strong nonlinearity exhibit breathing-like oscillations. Higher reservoir decay rates promote localization and suppress chaotic behavior, highlighting the interplay between nonlinearity and dissipation in determining the system's dynamical behavior.
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Received: 04 December 2025
Revised: 01 March 2026
Accepted manuscript online: 07 March 2026
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PACS:
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71.36.+c
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(Polaritons (including photon-phonon and photon-magnon interactions))
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05.45.-a
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(Nonlinear dynamics and chaos)
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72.15.Rn
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(Localization effects (Anderson or weak localization))
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03.65.Yz
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(Decoherence; open systems; quantum statistical methods)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 12404362), the Fundamental Research Funds for the Central Universities (Grant No. JUSRP123027), the National Natural Science Foundation of China (Grant No. 12264061), Excellent Youth Funding of Hunan Provincial Education Department (Grant No. 24B0807), and Hunan Provincial Natural Science Foundation of China (Grant No. 2025JJ70330). |
Corresponding Authors:
Lei Chen, Xingran Xu
E-mail: chenlei@alum.imr.ac.cn;thoexxr@hotmail.com
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Cite this article:
Zhi-Hao Sun(孙志豪), Yong-Jia Chong(冲勇嘉), Yu Guan(管煜), Zheng-Ye Wang(王正叶), Meng Chen(陈猛), Lei Chen(陈雷), and Xingran Xu(许星然) Quench dynamics of Anderson-localized interacting exciton-polaritons 2026 Chin. Phys. B 35 057106
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