Title

Exceptional-point dynamics in photonic honeycomb lattices with PT symmetry

Authors

Authors

H. Ramezani; T. Kottos; V. Kovanis;D. N. Christodoulides

Comments

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Abbreviated Journal Title

Phys. Rev. A

Keywords

NON-HERMITIAN HAMILTONIANS; SPONTANEOUS EMISSION; CONICAL DIFFRACTION; PSEUDO-HERMITICITY; REAL SPECTRA; PT-SYMMETRY; LASERS; OPTICS; Optics; Physics, Atomic, Molecular & Chemical

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 gamma. 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 root gamma.

Journal Title

Physical Review A

Volume

85

Issue/Number

1

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

6

WOS Identifier

WOS:000299264100012

ISSN

1050-2947

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