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pro vyhledávání: '"Jiang, Xunya"'
The exploration of topology in natural materials and metamaterials has garnered significant attention. Notably, the one-dimensional (1D) and two-dimensional (2D) Su-Schrieffer-Heeger (SSH) model, assessed through tight-binding approximations, has bee
Externí odkaz:
http://arxiv.org/abs/2403.11613
Autor:
Li, Yunlin, Chen, Jingguang, Qi, Xingchao, Xiong, Langlang, Wang, Xianjun, Liu, Yufu, Guan, Fang, Shi, Lei, Jiang, Xunya
The systems without symmetries, e.g. the spatial and chiral symmetries, are generally thought to be improper for topological study and no conventional integral topological invariant can be well defined. In this work, with multi-band asymmetric Rice-M
Externí odkaz:
http://arxiv.org/abs/2403.12104
Although photon spin-orbit interaction (SOI) has been extensively studied, the vortex-conversion efficiency and the enhancement of spin Hall effect in abnormal modes in SOI remain to be investigated. Using an one-dimensional (1D) photonic crystal (Ph
Externí odkaz:
http://arxiv.org/abs/2402.15722
Autor:
Liu, Yufu, Wang, Xianjun, Li, Yunlin, Zhang, Haoran, Xiong, Langlang, Qi, Xingchao, Lai, Zhen, Wang, Xuezhi, Jiang, Xunya
Although several efforts have been taken to enhance the photonic spin Hall shift in deep-subwavelength region, according to effective medium theory, the fundamental confliction between near-zero reflection coefficient and near-zero incident angle sti
Externí odkaz:
http://arxiv.org/abs/2402.12791
Corner states (CSs) in higher-order topological insulators (HOTIs) have recently been of great interest in both crystals and quasicrystals. In contrast to electronic systems, HOTIs have not been found in photonic quasicrystals (PQCs). Here, we system
Externí odkaz:
http://arxiv.org/abs/2207.12286
Rich topological phenomena, edge states and two types of corner states, are unveiled in a two-dimensional square-lattice dielectric photonic crystal without both $C_4$ and $M_{x(y)}$ symmetries. Specifically, non-trivial type-I corner states, which d
Externí odkaz:
http://arxiv.org/abs/2203.09883
Publikováno v:
In Chinese Journal of Aeronautics September 2024 37(9):463-474
Publikováno v:
Comp. Phys. Comm., Vol. 183, No. 12, 2012, pp. 2513-2518
We present a numerically stable re-formulization of the transfer matrix method (TMM). The iteration form of the traditional TMM is transformed into solving a set of linear equations. Our method gains the new ability of calculating accurate wave-funct
Externí odkaz:
http://arxiv.org/abs/1912.11672
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