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 …

Research on spatially structured light has seen an explosion in activity over the past
decades, powered by technological advances for generating such light and driven by …

Structured waves are ubiquitous for all areas of wave physics, both classical and quantum,
where the wavefields are inhomogeneous and cannot be approximated by a single plane …

Among the known particles, the neutron is special because it provides experimental access
to all of the four fundamental forces and a wide range of hypothetical interactions. Despite …

Magnetic skyrmions are localized non-collinear spin textures, characterized by an integer
topological charge. Commonly observed in thin systems as two-dimensional sheets, in three …

Methods of preparation and analysis of structured waves of light, electrons, and atoms have
been advancing rapidly. Despite the proven power of neutrons for material characterization …

Methods to prepare and characterize neutron helical waves carrying orbital angular
momentum (OAM) were recently demonstrated at small-angle neutron scattering (SANS) …

We put forward a novel method for generating ultrarelativistic vortex positrons and electrons
with intrinsic orbital angular momenta (OAM) through nonlinear Breit-Wheeler (NBW) …

Slow neutrons possess several advantageous properties which make them useful probes for
a variety of exotic interactions, including some that can form at least some components of the …

The development of qualitatively new measurement capabilities is often a prerequisite for
critical scientific and technological advances. Here we introduce an unconventional …