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Conical Diffraction and Composite Lieb Bosons in Photonic Lattices

Diebel, Falko; Leykam, Daniel; Kroesen, S; Denz, Cornelia; Desyatnikov, Anton S


Pseudospin describes how waves are distributed between different “internal” degrees of freedom or microscopic states, such as polarizations, sublattices, or layers. Here, we experimentally demonstrate and explain wave dynamics in a photonic Lieb lattice, which hosts an integer pseudospin s=1 conical intersection. We study the most striking differences displayed by integer pseudospin states: pseudospin-dependent conical diffraction and the generation of higher charged optical vortices.

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.116.183902


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