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Control of the oscillation frequency of a vortex cluster in the trapped polariton condensate
Applied Physics Letters ( IF 4 ) Pub Date : 2024-05-13 , DOI: 10.1063/5.0199548
Kirill A. Sitnik 1 , Ivan Gnusov 1 , Mikhail Misko 1 , Julian D. Töpfer 1 , Sergey Alyatkin 1 , Pavlos G. Lagoudakis 1
Affiliation  

An optically trapped exciton–polariton condensate forms states corresponding to excited energy levels of the confining potential. Recently, it was shown that non-uniformity of the ring-shaped trapping potential leads to the simultaneous occupation of two split energy levels. This results in the formation of an oscillating vortex cluster with periodically changing signs of topological charges. Here, we experimentally demonstrate the control of the topological charge oscillation frequency by tuning the ellipticity of the excitation profile. Our observations are corroborated using the linear Schrödinger equation for a two-dimensional quantum harmonic oscillator. Our findings open a promising avenue for the investigation of optical vorticity properties and their applications in controllable settings.

中文翻译:

俘获极化子凝聚体中涡旋簇振荡频率的控制

光学捕获的激子-极化子凝聚体形成与限制势的激发能级相对应的状态。最近,研究表明环形捕获势的不均匀性导致两个分裂能级的同时占据。这导致形成具有周期性变化的拓扑电荷符号的振荡涡旋簇。在这里,我们通过实验证明了通过调整激励曲线的椭圆率来控制拓扑电荷振荡频率。我们的观察结果使用二维量子谐振子的线性薛定谔方程得到了证实。我们的研究结果为研究光学涡度特性及其在可控环境中的应用开辟了一条有希望的途径。
更新日期:2024-05-13
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