We demonstrate teleportation of quantum bits between two single atoms in distant laboratories. Using a time-resolved photonic Bell-state measurement, we achieve a teleportation fidelity of (88.0+/-1.5)%, largely determined by our entanglement fidelity. The low photon collection efficiency in free space is overcome by trapping each atom in an optical cavity. The resulting success probability of 0.1% is almost 5 orders of magnitude larger than in previous experiments with remote material qubits. It is mainly limited by photon propagation and detection losses and can be enhanced with a cavity-based deterministic Bell-state measurement.
@article{arxiv.1212.3127,
title = {Efficient Teleportation between Remote Single-Atom Quantum Memories},
author = {Christian Nölleke and Andreas Neuzner and Andreas Reiserer and Carolin Hahn and Gerhard Rempe and Stephan Ritter},
journal= {arXiv preprint arXiv:1212.3127},
year = {2013}
}