Vortex states of photons, electrons, and other particles are non-plane-wave solutions of the
corresponding wave equation with helicoidal wave fronts. These states possess an intrinsic …

Interest in the multiple facets of optical vortices has flourished in the last three decades. This
review examines the basic research and applications of the interplay between optical …

Photons can carry angular momentum, not only due to their spin, but also due to their spatial
structure. This extra twist has been used, for example, to drive circular motion of microscopic …

Traditional photonuclear reactions primarily excite giant dipole resonances, making the
measurement of isovector giant resonances with higher multipolarities a great challenge. In …

The physics of optical vortices, also known as twisted light, is now a well-established and a
growing branch of optical physics with a number of important applications and significant …

Infrared and visible light beams carrying orbital angular momentum (OAM) are currently
thoroughly studied for their extremely broad applicative prospects, among which are …

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 …

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 propagation of light beams is well described using the paraxial approximation, where
field components along the propagation direction are usually neglected. For strongly …