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Hyperbolic Band Theory

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Seminar Link: Picoelectrodynamics Theory Network - YouTube Abstract Hyperbolic lattices are a new form of synthetic quantum matter in which particles effectively hop on a discrete tiling of two-dimensional hyperbolic space, a non-Euclidean space of negative curvature. Hyperbolic tilings were studied...

Topological Edge Plasmons in Quantum Many-Body Systems

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Seminar Link: Picoelectrodynamics Theory Network - YouTube Abstract We discuss how the many-body excitation spectrum of topological insulators is affected by the presence of long-range Coulomb interactions. In the one-dimensional Su-Schrieffer-Heeger model and its mirror-symmetric variant, strongly...

Topological Edge Plasmons in Quantum Many-Body Systems by Prof. Stephan Haas

News: August 26, 2022
Prof. Stephan Haas discussed how the many-body excitation spectrum of topological insulators is affected by the presence of long-range Coulomb interactions. In the one-dimensional Su-Schrieffer-Heeger model and its mirror-symmetric variant, strongly localized plasmonic excitations are observed which...

Picophotonics: Atomistic Anomalous Waves in Silicon

News: October 27, 2022
Light-matter interaction in materials is central to several photonic devices from lasers to detectors. Over the past decade, nanophotonics, the study of how light flows on the nanometer scale in engineered structures such as photonic crystals and metamaterials has led to important advances. This...

Picophotonics

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Singular evanescent wave resonances in moving media Resonators fold the path of light by reflections leading to a phase balance and thus constructive addition of propagating waves. However, the amplitude decrease of these waves due to incomplete reflection or material absorption leads to a finite...