Cavity Quantum Electrodynamics with Second-Order Topological Corner State

Abstract

Topological photonics provides a new paradigm in studying cavity quantum electrodynamics with robustness to disorder. In this work, we demonstrate the coupling between single quantum dots and the second-order topological corner state. Based on the second-order topological corner state, a topological photonic crystal cavity is designed and fabricated into GaAs slabs with quantum dots embedded. The coexistence of corner state and edge state with high quality factor close to 2000 is observed. The enhancement of photoluminescence intensity and emission rate are both observed when the quantum dot is on resonance with the corner state. This result enables the application of topology into cavity quantum electrodynamics, offering an approach to topological devices for quantum information processing.

17 pages, 3 figures

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• Topological metasurface: From passive toward active and beyond
• Nonlinear imaging of nanoscale topological corner states
• Topolectrical-circuit realization of 4D hexadecapole insulator
• Nonlinear imaging of nanoscale topological corner states
• Strong light-matter interactions between gap plasmons and two-dimensional excitons at ambient condition in a deterministic way
• Topological cavity based on slow light topological edge mode for broadband Purcell enhancement
• Higher-order topological phases in crystalline and non-crystalline systems: a review
• Observation of $\pi$ solitons in oscillating waveguide arrays
• Topological photonic crystal fibers based on second-order corner modes
• Observation of Large-Number Corner Modes in $\mathbb{Z}$-class Higher-Order Topolectrical Circuits
• Nonlinear photonic disclination states
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• Optimization and robustness of topological corner state in second-order topological photonic crystal
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• Enhanced emission from a single quantum dot in a microdisk at a deterministic diabolical point
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• Polarization-independent second-order photonic topological corner states
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• Controllable Spin-Resolved Photon Emission Enhanced by Slow-Light Mode in Photonic Crystal Waveguides on Chip