Exceptional-point dynamics in photonic honeycomb lattices with PT symmetry

Authors

Hamidreza Ramezani, The University of Texas Rio Grande ValleyFollow
Tsampikos Kottos, Wesleyan University
Vassilios Kovanis, Wright Patterson Air Force Base
Demetrios N. Christodoulides, University of Central Florida

Document Type

Article

Publication Date

1-2012

Abstract

We theoretically investigate the flow of electromagnetic waves in complex honeycomb photonic lattices with local PT symmetries. Such PT structure is introduced via a judicious arrangement of gain and loss across the honeycomb lattice, characterized by a gain and loss parameter γ. We found a class of conical diffraction phenomena where the formed cone is brighter and travels along the lattice with a transverse speed proportional to √γ.

Comments

© 2012 American Physical Society. Original published version available at https://doi.org/10.1103/PhysRevA.85.013818

Recommended Citation

Ramezani, Hamidreza, et al. “Exceptional-Point Dynamics in Photonic Honeycomb Lattices with PT Symmetry.” Physical Review A, vol. 85, no. 1, American Physical Society, Jan. 2012, p. 013818, doi:10.1103/PhysRevA.85.013818.

Publication Title

Physical Review A

DOI

10.1103/PhysRevA.85.013818