From the topological spin-Hall effect to the non-Hermitian skin effect in an elliptical micropillar chain
arXiv:2103.05480 · doi:10.1021/acsphotonics.1c01425
Abstract
The topological spin-Hall effect causes different spins to propagate in opposite directions based on Hermitian physics. The non-Hermitian skin effect causes the localization of a large number of modes of a system at its edges. Here we propose a system based on exciton-polariton elliptical micropillars hosting both the effects. The polarization splitting of the elliptical micropillars gives rise to the topological spin-Hall effect in a one dimensional lattice. When a circularly polarized external incoherent laser is used to imbalance effective decay rates of the different spin polarizations, the system transits to a non-Hermitian regime showing the skin effect. These effects have implications for robust polariton transport as well as the deterministic formation of multiply charged vortices and persistent currents.
Close to the published version in ACS Photonics
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Cited by in corpus (14)
- Topological Non-Hermitian skin effect
- Non-Hermitian Chiral Skin Effect
- Generalized Quantum Geometric Tensor in a Non-Hermitian Exciton-Polariton System
- Non-Hermitian skin effect induced by Rashba-Dresselhaus spin-orbit coupling
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- Non-Hermitian topological exciton-polariton corner modes
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- Topology with memory in nonlinear driven-dissipative photonic lattices
- Spin-polarized antichiral exciton-polariton edge states
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- Spin-dependent gain and loss in photonic quantum spin Hall systems
- Non-Hermitian synthetic lattices with light-matter coupling
- Enwrapped Perylene Bisimide Enables Room Temperature Polariton Lasing and Photonic Lattices