10 papers
Phase-Programmable Free Electron Quantum States in Synthetic Momentum Space
Alatz Alvarez-Ahedo, Miriam Lazo, Tian-Niu Xu +3
Light-electron interactions generate synthetic momentum-space dynamics that can be used to engineer free electron quantum states. Here we develop coherent control protocols in whic…
Quantum echo-enabled high harmonic generation using ultrafast electrons
Yangfan He, Chenhao Pan, Bin Zhang +1
Controlling and generating ultrafast free-electron wavepackets via laser is pivotal for photon-induced near-field electron microscopes (PINEM) and also for developing compact, cohe…
Programming Coherent and Quantum Light with a Free-Electron Wavepacket
Songyu Zhu, Yushan Zeng, Chenhao Pan +3
The pursuit of compact, programmable light sources with high coherence and spectral purity hinges on establishing a precise set of phase relationships in light-matter interactions.…
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…
Indirect multiphoton scattering between light and bulk plasmons via ultrafast free electrons
Ruoyu Chen, Jun Li, Qiaofei Pan +6
Efficient coupling between light and bulk plasmons (BPs) remains a central challenge because of their inherent mode mismatch, limited penetration depth, and pronounced resonant ene…
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.…
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…
Auger photoemission as a laser-like coherent cathode
Yushan Zeng, Bin Zhang, Kecheng Cao +2
In pursuit of quantum advancements across disciplines, a bright and coherent electron source is expected to be a cornerstone of diverse applications including electron microscopy,…
Shape-Dependence of Spontaneous Photon Emission by Quantum Electron Wavepackets and the QED Origin of Bunched Electron Beam Superradiance
Bin Zhang, Reuven Ianconescu, Aharon Friedman +4
It has been shown that the spontaneous emission rate of photons by free electrons, unlike stimulated emission, is independent of the shape or modulation of the quantum electron wav…
Free electron topological bound state induced by light beam with a twisted wavefront
Yiming Pan, Ruoyu Yin, Yongcheng Ding +3
Recent advances in ultrafast electron emission, microscopy, and diffraction have demonstrated a remarkable ability to manipulate free electrons with quantum coherence using light b…