Exceptional points in a non-Hermitian topological pump

• المؤلفون الرئيسيون: Hu, Wenchao, Wang, Hailong, Shum, Perry Ping, Chong, Yi Dong
• مؤلفون آخرون: School of Electrical and Electronic Engineering
• التنسيق: مقال
• اللغة: English
• منشور في: 2018
• الموضوعات: Classical Optics; Edge States; DRNTU::Science::Physics
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/80713; http://hdl.handle.net/10220/46593
• المؤسسة: Nanyang Technological University

We investigate the effects of non-Hermiticity on topological pumping and uncover a connection between a topological edge invariant based on topological pumping and the winding numbers of exceptional points. In Hermitian lattices, it is known that the topologically nontrivial regime of the topologica...