Abstract This White Paper aims at highlighting the important benefits in the science reach of
the EIC. High luminosity operation is generally desirable, as it enables producing and …

We review basic physics and novel types of optical angular momentum. We start with a
theoretical overview of momentum and angular momentum properties of generic optical …

Both classical and quantum waves can form vortices: entities with helical phase fronts and
circulating current densities. These features determine the intrinsic orbital angular …

Solving Maxwell's equations in cylindrical coordinates yields states in quantum theory with
definite values of energy ℏω, longitudinal momentum ℏk z, and total angular momentum …

This Letter presents for the first time a scheme to generate intense high-order optical vortices
that carry orbital angular momentum in the extreme ultraviolet region based on relativistic …

We analyze the multipole excitation of atoms with twisted light, ie, by a vortex light field that
carries orbital angular momentum. A single trapped 40 Ca+ ion serves as a localized and …

Any coherent interaction of light and atoms needs to conserve energy, linear momentum and
angular momentum. What happens to an atom's angular momentum if it encounters light that …

The exchange of orbital angular momentum between a Laguerre-Gaussian beam of light
and the center-of-mass motion of an atom or molecule is well known. We show that the …

Theoretical analysis of the excitation of low-Z hydrogenlike atoms by incident twisted light is
presented. Emphasis is placed on the cross sections that describe transitions between …

Spatially-structured laser beams, eventually carrying orbital angular momentum, affect
electronic transitions of atoms and their motional states in a complex way. We present a …