Light transfer transitions beyond higher-order exceptional points in parity-time and anti-parity-time symmetric waveguide arrays

Chuanxun Du, Gang Wang, Yan Zhang +1

We propose two non-Hermitian arrays consisting of $N=2l+1$ waveguides and exhibiting parity-time ($\mathcal{P}\mathcal{T}$) or anti-$\mathcal{P}\mathcal{T}$ symmetry for investigating light transfer d…