What are the Local operations and classical communication that i keep hearing about? It arises in quantum teleporting. Though i know that to perform quantum teleporting you need a classical channel (a phone line, an e-mail, etc) and I guess that classical communication refers to that, I still don't get the thing about local operations. It seems to me that is the fact to manipulate jointly the state that you want to teleport with the particle that you have in your possession of the quantum channel, but I'd like a concrete definition. Care to explain?