التفاصيل البيبلوغرافية
| العنوان: |
Non-Hermitian skin effect and nonreciprocity induced by dissipative couplings |
| المؤلفون: |
Huang, Xinyao, Li, Yaohua, Zhang, Guo-Feng, Liu, Yong-Chun |
| سنة النشر: |
2023 |
| المجموعة: |
Quantum Physics |
| مصطلحات موضوعية: |
Quantum Physics |
| الوصف: |
We study the mechanism for realizing non-Hermitian skin effect (NHSE) via dissipative couplings, in which the left-right couplings have equal strengths but the phases do not satisfy the complex conjugation. Previous realizations of NHSE typically require unequal left-right couplings or on-site gain and loss. In this work we find that when combined with the multichannel interference provided by a periodic dissipative-coherent coupling structure, the dissipative couplings can lead to unequal left-right couplings, inducing NHSE. Moreover, we show that the non-Hermiticity induced by dissipative couplings can be fully transformed into nonreciprocity-type non-Hermiticity without bringing extra gain-loss-type non-Hermiticity. Thus, this mechanism enables unidirectional energy transmission without introducing additional insertion loss. Our work opens a new avenue for the study of non-Hermitian topological effects and the design of directional optical networks. |
| نوع الوثيقة: |
Working Paper |
| URL الوصول: |
http://arxiv.org/abs/2311.03803 |
| رقم الانضمام: |
edsarx.2311.03803 |
| قاعدة البيانات: |
arXiv |