Coherent Microwave Emission of Gain-Driven Polaritons

By developing a gain-embedded cavity magnonics platform, we create a gain-driven polariton (GDP) that is activated by an amplified electromagnetic field. Distinct effects of gain-driven light-matter interaction, such as polariton auto-oscillations, polariton phase singularity, self-selection of a po...

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Bibliographic Details
Published in:Physical review letters 2023-04, Vol.130 (14), p.146702-146702, Article 146702
Main Authors: Yao, Bimu, Gui, Y S, Rao, J W, Zhang, Y H, Lu, Wei, Hu, C-M
Format: Article
Language:English
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Summary:By developing a gain-embedded cavity magnonics platform, we create a gain-driven polariton (GDP) that is activated by an amplified electromagnetic field. Distinct effects of gain-driven light-matter interaction, such as polariton auto-oscillations, polariton phase singularity, self-selection of a polariton bright mode, and gain-induced magnon-photon synchronization, are theoretically studied and experimentally manifested. Utilizing the gain-sustained photon coherence of the GDP, we demonstrate polariton-based coherent microwave amplification (∼40  dB) and achieve high-quality coherent microwave emission (Q>10^{9}).
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.130.146702