Can someone give me an overview of how OAM states are used in communications?
Using Orbital Angular Momentum States seems like a hot topic for communications. I read a few articles about the basic principles and experiments done in Italy that use OAM states to double the capacity of a wireless link.
Also if anybody knows where to find a good tutorial on OAM states or any other good place to look for more information, experiments, data, etc. related to this topic that would help me out a lot :).