6 papers
Skyrmions in scalar fields of non-Hermitian optical microcavities: spontaneous formation, nonlinear control, and optical forces
Jan Wingenbach, Roman Lebs, Xuekai Ma +5
Topological textures of light offer powerful routes for structuring optical fields, controlling wave transport, and manipulating matter. Skyrmions, long studied as topological soli…
Universal Topology of Exceptional Points in Nonlinear Non-Hermitian Systems
N. H. Kwong, Jan Wingenbach, Laura Ares +4
Exceptional points (EPs) are non-Hermitian degeneracies where eigenvalues and eigenvectors coalesce, giving rise to unusual physical effects across scientific disciplines. The conc…
Exceptional rings in nonlinear non-Hermitian planar optical microcavities: implementation, signal enhancement, and topology
Jan Wingenbach, Laura Ares, Xuekai Ma +4
Non-Hermitian systems hosting exceptional points (EPs) exhibit signal enhancement and unconventional mode dynamics. Going beyond isolated EPs, here we report on the existence of ex…
Polarization- and wave-vector selective optical metasurface with near-field coupling
Helene Wetter, Jan Wingenbach, Falk Rehberg +3
Metasurfaces are a powerful tool for manipulating light using small structures on the nanoscale. In most meta-surfaces, near-field couplings are treated as unfavorable perturbation…
Optically and remotely controlling localization of exciton polariton condensates in a potential lattice
Qiang Ai, Jan Wingenbach, Xinmiao Yang +6
Exciton polaritons are inherently tunable systems with adjustable potential landscape. In this work we show that exciton polariton condensates can be selectively localized in a fix…
PHOENIX -- Paderborn highly optimized and energy efficient solver for two-dimensional nonlinear Schrödinger equations with integrated extensions
Jan Wingenbach, David Bauch, Xuekai Ma +3
In this work, we introduce PHOENIX, a highly optimized explicit open-source solver for two-dimensional nonlinear Schrödinger equations with extensions. The nonlinear Schrödinger…