$\mathcal{PT}$ phase control in circular multicore fibers
Optics
2016-05-04 v1 Quantum Physics
Abstract
We consider light dynamics in a circular multicore fiber with balanced gain and loss core distribution, and show that transition from unbroken to broken phases can be conveniently controlled by geometric twist of the fiber. The twist introduces Peierls' phases in the coupling constants and thus acts as an artificial gauge field. As an application, we discuss twist-induced tuning of optical transmission in a six-core fiber with one lossy core.
Keywords
Cite
@article{arxiv.1603.06922,
title = {$\mathcal{PT}$ phase control in circular multicore fibers},
author = {Stefano Longhi},
journal= {arXiv preprint arXiv:1603.06922},
year = {2016}
}
Comments
6 pages, 4 figures; to appear in Optics Letters