Teleportation with identity interchange of quantum states

Abstract

We show that, beyond teleportation, it is possible to realize the interchange of states between two quantum systems once their states are simultaneously teleported from one to the other. The experimentally feasible scheme presented here, employing cavity QED phenomena, can be used to realize this ``identity interchange'' process between entangled particles as well, and even to teleport an entanglement from one particle system to another.