Transferring the state of an information carrier from a sender to a receiver is an essential primitive in both classical and quantum communication and information processing. In a quantum process known as teleportation the unknown state of a quantum bit can be relayed to a distant party using shared entanglement and classical information. Here we present experiments in a solid-state system based on superconducting quantum circuits demonstrating the teleportation of the state of a qubit at the macroscopic scale. In our experiments teleportation is realized deterministically with high efficiency and achieves a high rate of transferred qubit states. This constitutes a significant step towards the realization of repeaters for quantum communication at microwave frequencies and broadens the tool set for quantum information processing with superconducting circuits.
@article{arxiv.1302.5621,
title = {Realization of Deterministic Quantum Teleportation with Solid State Qubits},
author = {L. Steffen and A. Fedorov and M. Oppliger and Y. Salathe and P. Kurpiers and M. Baur and G. Puebla-Hellmann and C. Eichler and A. Wallraff},
journal= {arXiv preprint arXiv:1302.5621},
year = {2013}
}