Two teams of astronomers have simultaneously discovered a strange, spinning dead star that seems to defy our current ...

Orbital Angular Momentum (OAM) has been considered as a new dimension against the traditional domains based on the electric field strength of Electro-Magnetic (EM) waves. For the long distance ...

As a kind of wavefront with helical phase, orbital angular momentum (OAM) shows the great potential to enhance the security results of wireless communications due to its unique orthogonality and ...