The recently proposed extreme-ultraviolet beams with time-varying orbital angular
momentum (OAM) realized by high-harmonic generation provide extraordinary tools for …

The orbital angular momentum (OAM) of light has important applications in a variety of fields,
including optical communication, quantum information, super-resolution microscopic …

The Berry curvature provides a powerful tool to unify several branches of science through
their geometrical aspect: topology, energy bands, spin and vector fields. While quantum …

Quantum vortices are the quantized version of classical vortices. Their center is a phase
singularity or vortex core around which the flow of particles as a whole circulates and is …

This paper introduces a distinctive perspective to describe and construct a new type of
spatiotemporal optical field. Being different from the previous traditional wave packet …

The recently proposed extreme-ultraviolet (EUV) beams with time-varying orbital angular
momentum (OAM) realized by high harmonic generation provides extraordinary tools for …