Realization of all-optical vortex switching in exciton-polariton condensates.,Nature Communications

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Realization of all-optical vortex switching in exciton-polariton condensates.
Nature Communications ( IF 14.7 ) Pub Date : 2020-02-14 , DOI: 10.1038/s41467-020-14702-5
Xuekai Ma ₁ , Bernd Berger ₂ , Marc Aßmann ₂ , Rodislav Driben ₁ , Torsten Meier ₁ , Christian Schneider ₃ , Sven Höfling _{3,

4} , Stefan Schumacher _{1,

5}

Affiliation

Vortices are topological objects representing the circular motion of a fluid. With their additional degree of freedom, the vorticity, they have been widely investigated in many physical systems and different materials for fundamental interest and for applications in data storage and information processing. Vortices have also been observed in non-equilibrium exciton-polariton condensates in planar semiconductor microcavities. There they appear spontaneously or can be created and pinned in space using ring-shaped optical excitation profiles. However, using the vortex state for information processing not only requires creation of a vortex but also efficient control over the vortex after its creation. Here we demonstrate a simple approach to control and switch a localized polariton vortex between opposite states. In our scheme, both the optical control of vorticity and its detection through the orbital angular momentum of the emitted light are implemented in a robust and practical manner.

中文翻译：

激子-极化子凝聚物中全光涡旋切换的实现。

涡流是代表流体圆周运动的拓扑对象。由于它们具有额外的自由度，涡度，它们已经在许多物理系统和不同的材料中得到了广泛的研究，以实现基本的应用以及在数据存储和信息处理中的应用。在平面半导体微腔中的非平衡激子-极化子冷凝物中也观察到涡旋。它们在那里自发出现，或者可以使用环形光学激发轮廓在空间中创建和固定。但是，使用涡流状态进行信息处理不仅需要创建涡流，还需要在涡流创建后对其进行有效控制。在这里，我们演示了一种在相反状态之间控制和切换局部极化子涡流的简单方法。在我们的方案中

更新日期：2020-02-14

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