Topological photonic crystal nanocavity laser

Abstract

Topological edge states exist at the interfaces between two topologically-distinct materials. The presence and number of such modes are deterministically predicted from the bulk-band topologies, known as the bulk-edge correspondence. This principle is highly useful for predictably controlling optical modes in resonators made of photonic crystals (PhCs), leading to the recent demonstrations of micro-scale topological lasers. Meanwhile, zero-dimensional topological trapped states in the nanoscale remained unexplored, despite its importance for enhancing light-matter interactions and for wide applications including single-mode nanolasers. Here, we report a topological PhC nanocavity with a near-diffraction-limited mode volume and its application to single-mode lasing. The topological origin of the nanocavity, formed at the interface between two topologically-distinct PhCs, guarantees the existence of only one mode within its photonic bandgap. The observed lasing accompanies a high spontaneous emission coupling factor stemming from the nanoscale confinement. These results encompass a way to greatly downscale topological photonics.

arXiv comment17 pages, 6 figures

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Cited by in corpus (63)

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• Low-threshold topological nanolasers based on second-order corner state
• Lasing from multipole topological corner states
• Quantum electrodynamics in a topological waveguide
• Minireview on Disordered Optical Metasurfaces
• A brief review of topological photonics in one, two, and three dimensions
• Observation of Protected Photonic Edge States Induced By Real-Space Topological Lattice Defects
• Cavity Quantum Electrodynamics with Second-Order Topological Corner State
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• Topological Phases of Photonic Crystals under Crystalline Symmetries
• On-chip Light Trapping in Bilayer Moiré Photonic Crystal Slabs
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• Topological Photonic Tamm-States and the Su-Schrieffer-Heeger Model
• Theory of the coherence of topological lasers
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• Dynamical nonlinear higher-order non-Hermitian skin effects and topological trap-skin phase
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• Nonlinearity-induced transition in nonlinear Su-Schrieffer-Heeger model and nonlinear higher-order topological system
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• Fermi arc reconstruction in synthetic photonic lattice
• Recent advances in terahertz photonic technologies based on graphene and their applications
• Robust localized zero-energy modes from locally embedded PT-symmetric defects
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• Non-Hermitian Second-Order Topological Phases and Bipolar Skin Effect in Photonic Kagome Crystals
• Single-mode lasing based on PT-breaking of two-dimensional photonic higher-order topological insulator
• Tunable two-dimensional laser arrays with zero-phase locking
• A large-scale single-mode array laser based on a topological edge mode
• Topological Transitions with an Imaginary Aubry-Andre-Harper Potential
• Engineering Interaction Dynamics in Active Resonant Photonic Structures
• Observing 0D subwavelength-localized modes at ~100 THz protected by weak topology
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• Nonhermitian defect states from lifetime differences
• Spatial and Spectral Mode-Selection Effects in Topological Lasers with Frequency-Dependent Gain
• Quantum topology in the ultrastrong coupling regime
• Asymptotically exact photonic analogues of chiral symmetric topological tight-binding models
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• Supersymmetric non-Hermitian topological interface laser
• Linearized theory of the fluctuation dynamics in 2D topological lasers
• PC-symmetry-protected edge states in interacting driven-dissipative bosonic systems
• Topological Lasing from Thouless Pumping in Bilayer Photonic Crystal
• Edge mode bifurcations of two-dimensional topological lasers
• Topological Singularities in Metasurface Scattering Matrices: From Nodal Lines to Exceptional Lines
• Nonadiabatic nonlinear non-Hermitian quantized pumping
• Renormalization approach to the analysis and design of Hermitian and non-Hermitian interfaces
• Non-Hermitian physics and engineering in silicon photonics
• Gain engineering and atom lasing in a topological edge state in synthetic dimensions
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• Controllable Single Photon Scattering via Coupling of Driven $\Lambda$ System with Topological Waveguide
• Topological Photonics on a Small Scale
• Nanoimprinted topological laser in the visible