5 papers
Theory of dynamical superradiance in organic materials
Lukas Freter, Piper Fowler-Wright, Javier Cuerda +3
We develop the theory of dynamical superradiance -- the collective exchange of energy between an ensemble of initially excited emitters and a single-mode cavity -- for organic mate…
Superfluid weight cross-over and critical temperature enhancement in singular flat bands
Guodong Jiang, Päivi Törmä, Yafis Barlas
Non-analytic Bloch eigenstates at isolated band degeneracy points exhibit singular behavior in the quantum metric. Here, a description of superfluid weight for zero-energy flat ban…
Flat-Band Lasing in Silicon Waveguide-Integrated Metasurfaces
Sioneh Eyvazi, Evgeny A. Mamonov, Rebecca Heilmann +2
Photonic flat bands are crucial for enabling strong localization of light and enhancing light-matter interactions, as well as tailoring the angular distribution of emission from ph…
T-matrix representation of optical scattering response: Suggestion for a data format
Nigar Asadova, Karim Achouri, Kristian Arjas +39
The transition matrix, frequently abbreviated as T-matrix, contains the complete information in a linear approximation of how a spatially localized object scatters an incident fiel…
Flat-band ratio and quantum metric in the superconductivity of modified Lieb lattices
Reko P. S. Penttilä, Kukka-Emilia Huhtinen, Päivi Törmä
Flat bands may offer a route to high critical temperatures of superconductivity. It has been predicted that the quantum geometry of the bands as well as the ratio of the number of…