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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