4 papers
Non-Hermitian Second-Order Topological Phases and Bipolar Skin Effect in Photonic Kagome Crystals
Xiaosen Yang, Yaru Feng, Abdul Wahab +1
Non-Hermitian photonics provides a fertile platform for exploring phenomena with no Hermitian counterparts, including the non-Hermitian skin effect and exceptional points, with dir…
Multiplexed vector beam conversion via complex structured matter
Runchen Zhang, Tade Marozsak, An Aloysius Wang +9
Structured light, in which the amplitude, phase, and polarization of an optical field are deliberately tailored in space and time, has enabled unprecedented control over optical fi…
Light-induced Pairing Instability of Ultrafast Electron Beams with Space Charge Interactions
Hao Geng, Qiaofei Pan, Jian Kang +1
Ultrafast electron beams are essential for many applications, yet space-charge interactions in high-intensity beams lead to energy dissipation, coherence loss, and pulse broadening…
Floquet engineering of point-gapped topological superconductors
Xiang Ji, Hao Geng, Naeem Akhtar +1
Non-Hermitian systems exhibit two distinct topological classifications based on their gap structure: line-gap and point-gap topologies. Although point-gap topology is intrinsic to…