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Symmetry classification of temporal reciprocity in time-varying electromagnetic media
Seulong Kim, Kihong Kim
Time-varying electromagnetic media exhibit rich nonstationary wave phenomena, but the symmetry governing reversal of arbitrary temporal modulation sequences has remained unclear. W…
Statistical regimes of electromagnetic wave propagation in randomly time-varying media
Seulong Kim, Kihong Kim
Wave propagation in time-varying media enables unique control of energy transport by breaking energy conservation through temporal modulation. Among the resulting phenomena, tempor…
Deterministic time rewinding of waves in time-varying media
Seulong Kim, Kihong Kim
Temporal modulation of material parameters offers unprecedented control over wave dynamics, enabling phenomena beyond the capabilities of static systems. Here we introduce and anal…
Omnidirectional excitation of surface waves and super-Klein tunneling at the interface between two different bi-isotropic media
Seulong Kim, Kihong Kim
We study theoretically some unique characteristics of surface electromagnetic waves excited at the interface between two different kinds of general bi-isotropic media, which includ…
Invariant imbedding theory of wave propagation in arbitrarily inhomogeneous stratified bi-isotropic media
Seulong Kim, Kihong Kim
Bi-isotropic media, which include isotropic chiral media and Tellegen media as special cases, are the most general form of linear isotropic media where the electric displacement an…
Resonant absorption and amplification of circularly-polarized waves in inhomogeneous chiral media
Seulong Kim, Kihong Kim
It has been found that in the media where the dielectric permittivity or the magnetic permeability is near zero and in transition metamaterials where or changes fro…