Realization of all-optical vortex switching in exciton-polariton condensates
arXiv:1907.03171 · doi:10.1038/s41467-020-14702-5
Abstract
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.
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Cited by in corpus (39)
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- Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature
- Quantum Vortex Formation in the "Rotating Bucket'' Experiment with Polariton Condensates
- From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain
- Optically driven rotation of exciton-polariton condensates
- All-optical control of phase singularities using strong light-matter coupling
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