Coalescence of nonreciprocal exceptional points in magnetized PT-symmetric systems

Article

关键词: WAVE-GUIDES;    OPTICS;   

DOI  :  10.1103/PhysRevB.97.014428

来源: SCIE

【 摘 要 】

We study the Lorentz nonreciprocal transmission and nonreciprocal complex band structures supported in a PT-symmetric waveguide sandwiched bymagnetized layers. We found that, near the emergency and coalescence of exceptional points, nonreciprocal transmission can be significantly enhanced by the non-Hermitian properties. With the help of gain-loss balance, one-way light transmission could be achieved even in the presence of a weak magnetic field. The results may offer us insight into the interplay between Lorentz nonreciprocity and non-Hermiticity.

【 授权许可】

Free