Deterministic quantum teleportation between distant atomic objects

Abstract

Quantum teleportation is a key ingredient in quantum networks and one of the building blocks for quantum computation. Teleportation between distant material objects using light at the quantum-information carrier has been a particularly exciting goal. Here we propose and demonstrat. The deterministic continuous-variable teleportation between distant material objects. The objects are macroscopic atomic ensembles at room temperature. Entanglement required for teleportation is distributed by light propagating from one ensemble to the other. We demonstrate tha. The experimental fidelity of the quantum teleportation is higher than that achievable by any classical process. Furthermore, we demonstrat. The benefits of deterministic teleportation by teleporting a sequence of spin states evolving in time from one distant object onto another. The teleportation protocol is applicable to other important systems, such as mechanical oscillators coupled to light or cold spin ensembles coupled to microwaves. © 2013 Macmillan Publishers Limited. All rights reserved.