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Conical Diffraction and Composite Lieb Bosons in Photonic Lattices

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

Description

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
URI: http://hdl.handle.net/1885/152410
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.116.183902

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