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We present a family of one-dimensional quasiperiodic crystal which simultaneously display both the fractal bandstructure typical to quasiperiodic structures and properties normally exclusive to periodic structures, including Bloch-like modes.
We demonstrate, against current knowledge, that Anderson localization can occur for wavepackets outside the spectral extent of the disordered potential, mediated by second order transitions.
We show that introducing asymmetric coupling can force all the modes of a waveguide lattice to localize, except for one topologically protected “edge-state” which becomes extended. This mode has real eigenvalues and retains topological properties.
We study the interface between two artificial gauge fields in a 2D photonic lattice, and find the analogues of Snell's law and Fresnel coefficients of such interfaces.
We show how to modify the effective Hamiltonian of a dynamic system in an almost arbitrary fashion, using periodic gauge and driving. As an example, we generalize dynamic localization and counteract disorder effects in waveguide lattices.
We show that Čerenkov radiation contains new phenomena arising from the quantum nature of charged fermions. The charge's orbital angular momentum and spin couple to the emitted photon, which scatters into preferred angles and polarizations.
We experimentally demonstrate localization of visible light in deep subwavelength disordered multilayers with ∼15 nm layer thicknesses, making it possible to sense 2 nm thickness variations in individual layers, and we demonstrate localization enhanced transmission.
We present the first study on the interplay between lattice wave dynamics and curved space. We demonstrate Bloch oscillations and dynamic localization induced by space curvature, for configurations which in flat-space show only discrete diffraction.
We experimentally demonstrate, for the first time, waveguiding using artificial gauge fields. We use a system of waveguide arrays where the gauge field, arising by tilting the waveguides, affects transversal dynamics and generates guided modes.
We resolve the controversy around total internal reflection from gain media, propose new effects of (extremely) amplified reflection from a single interface, and snow sensitivity to subwavelengtn features.
We show that a structure of alternating dielectric layers with deep subwavelength thicknesses exhibits novel transmission effects that depend on the order of the layers and on nanometer scale variations of the layer widths.
We show that disorder in dielectric structures made of multiple layers of deep subwavelength thickness can induce extremely short-ranged localization. Additionally, the disorder can convert evanescent waves into bulk localized modes, enhancing transport dramatically (*10,000).
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