Trembling Motion of Exciton Polaritons Close to the Rashba-Dresselhaus Regime,Physical Review Letters

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Trembling Motion of Exciton Polaritons Close to the Rashba-Dresselhaus Regime
Physical Review Letters ( IF 8.1 ) Pub Date : 2024-09-10 , DOI: 10.1103/physrevlett.133.116903
Wen Wen ₁ , Jie Liang ₁ , Huawen Xu ₁ , Feng Jin ₁ , Yuri G. Rubo ₂ , Timothy C. H. Liew ₁ , Rui Su _{1,

1}

Affiliation

We report the experimental observation of trembling quantum motion, or Zitterbewegung, of exciton polaritons in a perovskite microcavity at room temperature. By introducing liquid-crystal molecules into the microcavity, we achieve spinor states with synthetic Rashba-Dresselhaus spin-orbit coupling and tunable energy splitting. Under a resonant excitation, the polariton fluid exhibits clear trembling motion perpendicular to its flowing direction, accompanied by a unique spin pattern resembling interlocked fingers. Furthermore, leveraging the sizable tunability of energy gaps by external electrical voltages, we observe the continuous transition of polariton Zitterbewegung from relativistic (small gaps) to nonrelativistic (large gaps) regimes. Our findings pave the way for using exciton polaritons in the emulation of relativistic quantum physics.

中文翻译：

接近 Rashba-Dresselhaus 体系的激子极化子的颤动运动

我们报告了室温下钙钛矿微腔中激子极化激元的颤动量子运动（ Zitterbewegung ）的实验观察。通过将液晶分子引入微腔，我们通过合成 Rashba-Dresselhaus 自旋轨道耦合和可调能量分裂实现了旋量态。在共振激发下，极化子流体表现出垂直于其流动方向的明显颤抖运动，并伴随着类似于互锁手指的独特旋转模式。此外，利用外部电压对能隙的巨大可调性，我们观察到极化子Zitterbewegung从相对论（小能隙）状态到非相对论（大能隙）状态的连续转变。我们的发现为使用激子极化子模拟相对论量子物理铺平了道路。

更新日期：2024-09-11

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