Physical realization of ${\cal{PT}}$-symmetric potential scattering in a planar slab waveguide
arXiv:1706.04056 · doi:10.1088/0305-4470/38/9/L03
Abstract
A physical realization of scattering by ${\cal{PT}}$-symmetric potentials is provided: we show that the Maxwell equations for an electromagnetic wave travelling along a planar slab waveguide filled with gain and absorbing media in contiguous regions, can be approximated in a parameter range by a Schrödinger equation with a ${\cal{PT}}$-symmetric scattering potential.
6 pages, 2 figures