Electron waves that carry orbital angular momentum (OAM) are characterized ... to obtain information regarding the material’s structure. Here, we propose, design and demonstrate the performance ...

Photons can carry angular momentum ... valence electron of a trapped ion. In particular, we measure strongly modified selection rules accounting for OAM associated with the spatial structure ...

While the spin of an electron does some of the things that you would associate with a spinning ball-- you can play some tricks to convert spin angular momentum into physical rotations, and the ...

Yet all that angular momentum cannot simply be lost. It must be conserved – somewhere. Thanks to new ultrafast electron diffraction experiments, researchers at the University of Konstanz in Germany ...

The orbital angular momentum (OAM) of electromagnetic waves ... but also a higher-order twist in the envelope wavefront structure of the OAM beam in terms of a nonlinear time-dependence ...

After exhausting the available physical dimensions for multiplexed holography, researchers have found new opportunities in the orbital angular momentum (OAM) dimension of light. By sampling ...

Scientists have demonstrated for the first time how 'twisted' sound waves from a rotating source can produce negative frequencies—akin to turning back time. A team of international researchers ...