Ultrafast intermode parametric scattering dynamics in room-temperature polariton condensates

Letter

Ultrafast intermode parametric scattering dynamics in room-temperature polariton condensates

Ziyu Ye, Fei Chen, Hang Zhou, Song Luo, Zhenrong Sun, Huailiang Xu, Hongxing Xu, Hui Li, Zhanghai Chen, and Jian Wu

Phys. Rev. B 107, L060303 – Published 10 February 2023

Abstract

Parametric scattering dynamics are general and of crucial importance for cavity exciton polaritons. Here, parametric scattering process driven by exciton polariton condensates has been revealed in a 1D ZnO microcavity between the whispering-gallery mode and quasiwhispering-gallery mode. When the occupation of the produced polariton condensate is dense enough, polariton condensates formed on quasiwhispering-gallery mode can be scattered towards the ground state of the adjacent whispering-gallery modes at higher and lower energies. By using the femtosecond angle-resolved spectroscopic imaging technique, the ultrafast dynamics of this intermode polariton parametric scattering have been explicitly observed. The scattering towards a higher mode occurs faster than that to a lower-energy mode by less than a picosecond. The revealed dynamics can not only expand the present investigations on polariton parametric scattering, but also promote the potential applications in, e.g., quantum information processing.

Received 12 October 2022
Revised 27 January 2023
Accepted 30 January 2023

DOI:https://doi.org/10.1103/PhysRevB.107.L060303

Physics Subject Headings (PhySH)

Exciton polariton

Polariton condensate

Femtosecond laser spectroscopy Photoluminescence Whispering gallery mode resonators

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Ziyu Ye^1,*, Fei Chen^1,*, Hang Zhou², Song Luo², Zhenrong Sun¹, Huailiang Xu¹, Hongxing Xu¹, Hui Li ^1,†, Zhanghai Chen^2,‡, and Jian Wu^1,3,4,5,§

¹State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
²Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005, China
³Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401121, China
⁴Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
⁵CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China

^*These authors contributed equally to this work.
^†hli@lps.ecnu.edu.cn
^‡zhanghai@xmu.edu.cn
^§jwu@phy.ecnu.edu.cn

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Issue

Vol. 107, Iss. 6 — 1 February 2023

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