When quantum electrodynamics, the quantum field theory of electrons and photons, was being developed after World War II, one of the major challenges for theorists was calculating a value for the Lamb ...

Conventional metal-tip-based laser-driven electron sources are normally constrained by a trade-off between energy spread and pulse width due to optical-field-induced free electron acceleration. This ...

In a laser-plasma accelerator 1, the interaction of a high-intensity laser pulse with a plasma creates a trailing density modulation, the plasma wave, which supports electric fields several orders of ...

The ability to precisely study and manipulate electrons in electron microscopes could open new possibilities for the development of both ultrafast imaging techniques and quantum technologies. Over the ...