Chiral Zener tunneling in non-Hermitian frequency lattices
| العنوان: | Chiral Zener tunneling in non-Hermitian frequency lattices |
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| المؤلفون: | Lingzhi Zheng, Bing Wang, Chengzhi Qin, Lange Zhao, Shuyue Chen, Weiwei Liu, Peixiang Lu |
| المصدر: | Optics Letters. 47:4644 |
| بيانات النشر: | Optica Publishing Group, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Atomic and Molecular Physics, and Optics |
| الوصف: | A waveguide coupler under both phase and intensity modulation is proposed to generate a non-Hermitian Su–Schrieffer–Heeger lattice in frequency dimension. By varying the modulation period and phase, we can manipulate the on-site potential of the lattice and realize anisotropic coupling of the supermodes in waveguides. The artificial electric field associated with the modulation phase can also be introduced simultaneously. Zener tunneling is demonstrated in the non-Hermitian system and manifests an irreversibly unidirectional conversion between odd and even supermodes. The conversion efficiency can be optimized by varying the on-site potential of the waveguides. The study provides a versatile platform to explore non-Hermitian multiband physics in synthetic dimensions, which may find great application in chiral mode converters and couplers. |
| تدمد: | 1539-4794 0146-9592 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f05f147b7fbd413a72c44d7417536819 https://doi.org/10.1364/ol.470880 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....f05f147b7fbd413a72c44d7417536819 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15394794 01469592 |
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