Work

PT -symmetric optical lattices

Year: 2010

Type: article

Abstract: The basic properties of Floquet-Bloch (FB) modes in parity-time ($\mathcal{PT}$)-symmetric optical lattices are examined in detail. Due to the parity-time symmetry of such complex periodic potentials, the corresponding FB modes are skewed (nonorthogonal) and nonreciprocal. The conjugate pairs of these FB modes are obtained by reflecting both the spatial coordinate and the Bloch momentum number itself. The orthogonality conditions are analytically derived for a single cell, for both a finite and an infinite lattice. Some of the peculiarities associated with the diffraction dynamics in $\mathcal{PT}$ lattices such as nonreciprocity, power oscillations, and phase dislocations, are also examined.

Source: Physical Review A

DOI: 10.1103/physreva.81.063807

Authors: Konstantinos G. Makris, Ramy El-Ganainy, Demetrios N. Christodoulides, Z. H. Musslimani

Institutions: University of Central Florida, Florida State University

Language: English

Topic: Quantum Mechanics and Non-Hermitian Physics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2072774600

FWCI: 14.25

Cites: 39

Cited by: 324

Related to: 10