Conical Diffraction and Composite Lieb Bosons in Photonic Lattices

Falko Diebel, Daniel Leykam, Sebastian Kroesen, Cornelia Denz, Anton S. Desyatnikov

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)


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.

Original languageEnglish
Article number183902
JournalPhysical Review Letters
Issue number18
Publication statusPublished - May 4 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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