149 citations · 445 across the 19 of their papers we have counts for
9 papers · 1 filter
Arbitrary Polarization-Independent Backscattering or Reflection by Rotationally-Symmetric Reciprocal Structures
Weijin Chen, Qingdong Yang, Yuntian Chen +1
We study the backward scatterings of plane waves by reciprocal scatterers and reveal that -fold () rotation symmetry is sufficient to secure invariant backscattering for…
Ideal Kerker scattering by homogeneous spheres: the role of gain or loss
Qingdong Yang, Weijin Chen, Yuntian Chen +1
We reexamine a recent work [Phys. Rev. Lett. \textbf{125}, 073205 (2020)] that investigates how the optical gain or loss (characterized by isotropic complex refractive indexes) inf…
Scattering invariance for arbitrary polarizations protected by joint spatial-duality symmetries
Qingdong Yang, Weijin Chen, Yuntian Chen +1
We reveal how to exploit joint spatial-electromagnetic duality symmetries to obtain invariant scattering properties (including extinction, scattering, absorption) of self-dual scat…
Symmetry Protected Invariant Scattering Properties for Arbitrary Polarizations
Qingdong Yang, Weijin Chen, Yuntian Chen +1
Polarization independent Mie scattering of building blocks is foundational for constructions of optical systems with robust functionalities. Conventional studies for such polarizat…
Scattering and absorption invariance of nonmagnetic particles under duality transformations
Qingdong Yang, Weijin Chen, Yuntian Chen +1
We revisit the total scatterings (in terms of extinction, scattering and absorption cross sections) by arbitrary clusters of nonmagnetic particles that support optically-induced ma…
Evolution and global charge conservation for polarization singularities emerging from nonhermitian degeneracies
Weijin Chen, Qingdong Yang, Yuntian Chen +1
Core concepts in singular optics, especially the polarization singularity, have rapidly penetrated the surging fields of topological and nonhermitian photonics. For open photonic s…
Electromagnetic Duality Protected Scattering Properties of Nonmagnetic Particles
Qingdong Yang, Weijin Chen, Yuntian Chen +1
Optical properties of nonmagnetic structures that support artificial optically-induced magnetic responses have recently attracted surging interest. Here we conduct symmetry-dictate…
Global Mie Scattering
Weijin Chen, Qingdong Yang, Yuntian Chen +1
In various subdisciplines of optics and photonics, Mie theory has been serving as a fundamental language and play indispensable roles widely. Conventional studies related to Mie sc…
Ultrafast ratchet dynamics of skyrmion by defect engineering under gigahertz magnetic fields
Weijin Chen, Linjie Liu, Yue Zheng
The novel ratchet motion of magnetic skyrmions driven by microwave magnetic fields, with the motion direction and speed tunable by field parameters, provides a promising route to d…