A new experiment encodes quantum information in the motion of the atoms and creates a state known as hyper-entanglement, in which two or more traits are linked among a pair of atoms.

Abstract: We compare the technique of using the orbital angular momentum (OAM) of radio waves for generating multiple channels in a radio communication scenario with traditional ...

The world standard of mass is the kilogram, whose definition is based on the mass of a metal cylinder kept in France.Previously, the standard was based upon the mass of one cubic centimeter of water ...