Optical Control of Topological Polariton Phase in a Perovskite Lattice
arXiv:2012.05470
Abstract
Strong light-matter interaction enriches topological photonics by dressing light with matter, which provides the possibility to realize tuneable topological devices with immunity to defects. Topological exciton polaritons, half-light half-matter quasiparticles with giant optical nonlinearity represent a unique platform for active topological photonics with phase tunability. Previous demonstrations of exciton polariton topological insulators still demand cryogenic temperatures and their topological properties are usually fixed without phase tunability. Here, we experimentally demonstrate a room-temperature exciton polariton topological insulator with active phase tunability in a perovskite zigzag lattice. Polarization serves as a degree of freedom to control the reversible transition between distinct topological phases, thanks to the polarization-dependent anisotropy in halide perovskite microcavities. The topologically nontrivial polariton states localized in the edges persist in the presence of a natural defect, showing strong immunity to disorder. We further demonstrate that exciton polaritons can condense into the topological edge states under optical pumping. These results provide an ideal platform for realizing tuneable topological polaritonic devices with room-temperature operation, which can find important applications in optical control, modulation and switching.
References in corpus (22)
- Topological Insulators
- Photonic Floquet Topological Insulators
- Possible Realization of Directional Optical Waveguides in Photonic Crystals with Broken Time-Reversal Symmetry
- Experimental realisation of the topological Haldane model
- Photonic Analogue of Two-dimensional Topological Insulators and Helical One-Way Edge Transport in Bi-Anisotropic Metamaterials
- Imaging topological edge states in silicon photonics
- Topological Acoustics
- Observation of phononic helical edge states in a mechanical 'topological insulator'
- Lasing in topological edge states of a 1D lattice
- A topological quantum optics interface
- Exciton-polariton topological insulator
- Topological Phase Transition and Texture Inversion in a Tunable Topological Insulator
- Room Temperature Polariton Lasing in All-Inorganic Perovskites
- A topological source of quantum light
- Polariton Topological Insulator
- Electric Field-Tuned Topological Phase Transition in Ultra-Thin Na3Bi - Towards a Topological Transistor
- Non-linear second-order topological insulators
- Topological Polaritons and Excitons in Garden Variety Systems
- Kibble-Zurek mechanism in topologically non-trivial zigzag chains of polariton micropillars
- Room temperature Organic Exciton-Polariton Condensate in a Lattice
- Coupling between Exciton-Polariton Corner Modes through Edge States
- Active Valley-topological Plasmonic Crystal in Metagate-tuned Graphene