ArticleLight, science & applications2021
Quantum superposition demonstrated higher-order topological bound states in the continuum.
Article in Light, science & applications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Tunable arbitrarily located quasi-corner states in multiphase weak topological insulator.Nature communications · 2026Article
- Topology in Thermal, Particle, and Plasma Diffusion Metamaterials.Chemical reviews · 2025Review
- Construction of Topological Bound States in the Continuum Via Subsymmetry.ACS photonics · 2024Article
- Fractal photonic anomalous Floquet topological insulators to generate multiple quantum chiral edge states.Light, science & applications · 2023Article
- Two Individual Super-Bound State Modes within Band Gap with Ultra-HighSensors (Basel, Switzerland) · 2023Article
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Authors and funding
13 authors.
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Abstract
Higher-order topological insulators, as newly found non-trivial materials and structures, possess topological phases beyond the conventional bulk-boundary correspondence. In previous studies, in-gap boundary states such as the corner states were regarded as conclusive evidence for the emergence of higher-order topological insulators. Here, we present an experimental observation of a photonic higher-order topological insulator with corner states embedded into the bulk spectrum, denoted as the higher-order topological bound states in the continuum. Especially, we propose and experimentally demonstrate a new way to identify topological corner states by exciting them separately from the bulk states with photonic quantum superposition states. Our results extend the topological bound states in the continuum into higher-order cases, providing an unprecedented mechanism to achieve robust and localized states in a bulk spectrum. More importantly, our experiments exhibit the advantage of using the time evolution of quantum superposition states to identify topological corner modes, which may shed light on future exploration between quantum dynamics and higher-order topological photonics.
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