Light transport in PT-invariant photonic structures with hidden symmetries

TL;DR

This paper presents a recursive bosonic quantization method to design PT-symmetric photonic structures with hidden symmetries, revealing unique light transport properties and conservation laws.

Contribution

The study introduces a novel recursive quantization technique for PT photonic structures, uncovering hidden symmetries and higher order exceptional points.

Findings

Perfect state transfer occurs only for specific initial conditions.

Left and right coherent transports exhibit asymmetry in field amplitudes.

A general scheme for identifying conservation laws in PT networks is proposed.

Abstract

We introduce a recursive bosonic quantization technique for generating classical PT photonic structures that possess hidden symmetries and higher order exceptional points. We study light transport in these geometries and we demonstrate that perfect state transfer is possible only for certain initial conditions. Moreover, we show that for the same propagation direction, left and right coherent transports are not symmetric with field amplitudes following two different trajectories. A general scheme for identifying the conservation laws in such PT-symmetric photonic networks is also presented.