3 papers
physics.optics2025
Topologically-protected superluminal pair annihilation in photonic time crystals
Liang Zhang, Chenhao Pan, Jinze He +4
Photonic time crystals (PTCs) - dielectric media whose permittivity is periodically modulated in time - map to a Dirac equation with an imaginary mass, opening a momentum gap (k-ga…
quant-ph2025
Ultrafast Stern-Gerlach and Anomalous Bragg Diffraction Regimes of Low-energy Free Electron Interaction with Light
Yongcheng Ding, Zirui Zhao, Bin Zhang +3
Recent advances in photon-induced near-field electron microscopy (PINEM) have significantly impacted allied disciplines such as laser-driven accelerators and free electron radiatio…
physics.optics2025
Generating and Weaving Topological Event Wavepackets in Photonic Spacetime Crystals with Fully Energy-Momentum Gapped
Liang Zhang, Zirui Zhao, Qiaofei Pan +3
We propose a novel type of topological excitation topological event wavepackets (TEWs) emerging in photonic spacetime crystals (STCs) with spacetime modulated dielectric constants.…