I'm extremely confused by what physicists mean by the spatial mode of light. I am also equally if not more confused by what the spatial mode of a massive particle is. Can anyone help me out by providing an explanation? (I'm also a visual learner, so diagrams will help)
Spatial mode of light makes no sense to me because I don't understand what its referring to!
I'm thinking that the spatial mode of a massive particle is like the eigenstate of an atom. At every energy level, there is a corresponding eigen state and this is the atom's spatial distribution. I'm guessing that taking a particle in general also has eigen states, and to distinguish them from atoms, they call them spatial modes?
I'm reading this paper:
Heaney, Libby. Teleportation of a quantum state of a spatial mode with a single massive particle. Proceedings of the 5th Conference on Theory of Quantum Computation, Communication and Cryptography. Lect. Notes Comput. Sc. 6519 pp. 175-186 (2011). doi:10.1007/978-3-642-18073-6_15, arXiv:1011.3743 [quant-ph].