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We show the existence of an inherent handedness (spin) of evanescent-electromagnetic-waves which is fundamentally locked to the direction of propagation (momentum). It is universal and accompanies evanescent waves in total internal reflection, waveguides/fibers and surface-states. The hallmark of the recently discovered quantum spin hall (QSH) state of matter is the existence of electronic surface...
We report preferential emission from ZnO nanoparticles into an epsilon near zero metamaterial. The structure is designed to have the parallel component of its dielectric constant approach zero at the maximum emission wavelength of ZnO.
Directional light extraction from high-k modes in a hyperbolic metamaterial (HMM) is demonstrated by direct coupling of resonance cones from quantum dots (QDs) underneath a metal-dielectric composite to a high index bulls-eye grating structure.
We report the broadband (∼ 25 nm) control of radiative decay rate of colloidal quantum dots by exploiting the flat dispersion of a one-dimensional nonmagnetic metamaterial structure.
We propose a new approach to the broadband Purcell effect based on metamaterials with hyperbolic dispersion. Highly directional emission and dramatic reduction in spontaneous-emission lifetime due to the singularity in density-of-states leads to many interesting applications‥
We show that (meta)materials with hyperbolic dispersion exhibit a broad bandwidth singularity in the photonic density of states. As opposed to an isolated singularity found in other physical systems, with the finite density of states in its vicinity, for the systems with hyperbolic dispersion the photonic density of states diverges at every frequency over a finite bandwidth. This behavior leads to...
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