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Conical Diffraction and Composite Lieb Bosons in Photonic Lattices

Falko Diebel, Daniel Leykam, Sebastian Kroesen, Cornelia Denz, and Anton S. Desyatnikov
Phys. Rev. Lett. 116, 183902 – Published 4 May 2016
Physics logo See Synopsis: Three-Way Spin in Photonic Lattice
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Abstract

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.

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  • Received 13 October 2015

DOI:https://doi.org/10.1103/PhysRevLett.116.183902

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Synopsis

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Three-Way Spin in Photonic Lattice

Published 4 May 2016

An array of optical waveguides bestows light waves with three spin-like states, which are observable in cone- and vortex-shaped diffraction patterns.

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Authors & Affiliations

Falko Diebel1,*, Daniel Leykam2,3, Sebastian Kroesen1, Cornelia Denz1, and Anton S. Desyatnikov2,4

  • 1Institut für Angewandte Physik and Center for Nonlinear Science (CeNoS), Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
  • 2Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Canberra, Australian Capital Territory 0200, Australia
  • 3Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
  • 4Department of Physics, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana 010000, Kazakhstan

  • *falko.diebel@uni-muenster.de

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Issue

Vol. 116, Iss. 18 — 6 May 2016

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