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arXiv 2501.07899cond-mat.mes-hallcond-mat.quant-gas
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激子振子强度饱和主导极化激元-极化激元相互作用

Excitonic oscillator-strength saturation dominates polariton-polariton interactions

Maxime Richard, Irénée Frérot, Sylvain Ravets, Jacqueline Bloch, Carlos Anton-Solanas, Ferdinand Claude, Yueguang Zhou, Martina Morassi, Aristide Lemaître, Iaco… 展开作者

Maxime Richard, Irénée Frérot, Sylvain Ravets, Jacqueline Bloch, Carlos Anton-Solanas, Ferdinand Claude, Yueguang Zhou, Martina Morassi, Aristide Lemaître, Iacopo Carusotto, and Anna Minguzzi

AI总结:

本研究通过实验测量半导体微腔中相互作用下极化激元相干流体的热集体激发色散关系,结合Bogoliubov理论对比双支结果,揭示激子振子强度饱和是极化激元-极化激元相互作用的主导微观机制,助力单光子非线性量子 regime 研究推进。

摘要:

半导体微腔中的激子极化激元表现出强两体相互作用,得益于日益精进的纳米技术,这类系统正越来越接近单光子非线性开始发挥作用的量子区域。为推动该方向的进一步发展,本工作通过实验探究了驱动极化激元-极化激元相互作用的微观机制。我们测量了在相互作用下极化激元相干流体之上热生成的集体激发的色散关系。通过同时将下、上极化激元支的测量结果与Bogoliubov理论进行对比,我们发现极化激元-极化激元相互作用主要来源于激子振子强度饱和机制。

英文摘要:

Exciton-polaritons in semiconductor microcavities exhibit large two-body interactions that, thanks to ever refined nanotechnology techniques, are getting closer and closer to the quantum regime where single-photon nonlinearities start being relevant. To foster additional progress in this direction, in this work we experimentally investigate the microscopic mechanism driving polariton-polariton interactions. We measure the dispersion relation of the collective excitations that are thermally generated on top of a coherent fluid of interacting lower-polaritons. By comparing the measurements with the Bogoliubov theory over both the lower and upper polariton branches simultaneously, we find that polariton-polariton interactions stem dominantly from a mechanism of saturation of the exciton oscillator strength.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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