6 papers
Spatiotemporal Vortex Rings Induced by Spatiotemporal Coupling
Zhiling Zhou, Wei Zhong, Tong Fu +4
Vortices and vortex rings are topological structures that arise in various physical systems. However, the generation of spatiotemporal vortices (STVs) and vortex rings (STVRs) has…
Real-space Hybrid Topological Singularities in Structured Elastic Waves
Tong Fu, Pengfei Zhao, Liyou Luo +5
Real-space singularities govern a broad spectrum of wave phenomena, yet they remain largely unexplored in elastic wave systems. Here, we report hybrid topological singularities tha…
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…
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…
Acoustic Pancharatnam-Berry Geometric Phase
Wanyue Xiao, Wenjian Kuang, Sibo Huang +3
Geometric phases provide a unified framework for understanding diverse phenomena in quantum and classical physics. The Pancharatnam-Berry (PB) geometric phase, arising from variati…
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…