Discrete solitons in self-defocusing systems with $\mathcal{P}\mathcal{T}$-symmetric defects

Zhiqiang Chen, Jiasheng Huang, Jinglei Chai +3

We construct families of discrete solitons (DSs) in an array of self-defocusing waveguides with an embedded $\mathcal{P}\mathcal{T}$ (parity-time)-symmetric dimer, which is represented by a…