149 citations · 445 across the 19 of their papers we have counts for
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Scattering Activities Bounded by Reciprocity and Parity Conservation
Weijin Chen, Qingdong Yang, Yuntian Chen +1
Scattering activities are generally manifest through different optical responses of scattering bodies to circularly polarized light of opposite handedness. Similar to the ubiquitou…
Gauge-field description of Sagnac frequency shift and mode hybridization in a rotating cavity
Hongkang Shi, Zhongfei Xiong, Weijin Chen +3
Active optical systems can give rise to intriguing phenomena and applications that are not available in conventional passive systems. Structural rotation has been widely employed t…
Line Singularities and Hopf Indices of Electromagnetic Multipoles
Weijin Chen, Yuntian Chen, Wei Liu
Electromagnetic multipoles can be continuously mapped to tangent vectors on the momentum sphere, the topology of which guarantees the existence of isolated singularities. For pure…
Singularities and Poincaré Indexes of Electromagnetic Multipoles
Weijin Chen, Yuntian Chen, Wei Liu
Electromagnetic multipoles have been broadly adopted as a fundamental language throughout photonics, of which general features such as radiation patterns and polarization distribut…
Flat band localization due to self-trapped orbital
Zhen Ma, Wei-Jin Chen, Yuntian Chen +2
We discover a new wave localization mechanism in a periodic system without any disorder, which can produce a novel type of perfect flat band and is distinct from the known localiza…