8 papers · 1 filter
Strong optical nonreciprocity in a photonic crystal composed of spinning cylinders
Hengzhi Li, Wanyue Xiao, Junho Jung +2
Moving media break time-reversal symmetry and exhibit intriguing optical nonreciprocity. This nonreciprocity is usually weak due to the much lower moving speed of media relative to…
Deep learning assisted inverse design of nonreciprocal multilayer photonic structures
Weiran Zhang, Hao Pan, Shubo Wang
Nonreciprocal structures play an important role in optical physics and applications. Conventional approaches for designing nonreciprocal optical structures rely heavily on extensiv…
Riemann-Silberstein geometric phase in 4D polarization space
Yuqiong Cheng, Yuan-Song Zeng, Wanyue Xiao +5
Geometric phase is a far-reaching concept in quantum and classical physics. The first discovered geometric phase, the Pancharatnam-Berry (PB) phase, has profoundly shaped nanophoto…
Optical force and torque on a spinning dielectric sphere
Hengzhi Li, Wanyue Xiao, Tong Fu +2
Optical force can enable precise manipulations of small particles for various applications. It is well known that an isotropic lossless dielectric sphere is only subject to forward…
Nonreciprocal optical metasurface based on spinning cylinders
Zheng Yang, Wanyue Xiao, Hengzhi Li +2
Optical systems breaking Lorentz reciprocity have attracted broad attention due to their intriguing physics and applications. Nonreciprocal metasurfaces can enable one-way light tr…
Directional sources realised by toroidal dipoles
Junho Jung, Yuqiong Cheng, Wanyue Xiao +1
Directional optical sources can give rise to the directional excitation and propagation of light. The directionality of the conventional directional dipole (CDD) sources are attrib…