# Quantum repeaters based on atomic ensembles and linear optics

@article{Sangouard2009QuantumRB, title={Quantum repeaters based on atomic ensembles and linear optics}, author={Nicolas Sangouard and Christoph Simon and Hugues de Riedmatten and Nicolas Gisin}, journal={Reviews of Modern Physics}, year={2009}, volume={83}, pages={33-80} }

The distribution of quantum states over long distances is limited by photon loss. Straightforward amplification as in classical telecommunications is not an option in quantum communication because of the no-cloning theorem. This problem could be overcome by implementing quantum repeater protocols, which create long-distance entanglement from shorter-distance entanglement via entanglement swapping. Such protocols require the capacity to create entanglement in a heralded fashion, to store it in… Expand

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