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10 May 2007 Quantum repeaters: fundamental and future
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Abstract
An overview of the Quantum Repeater techniques based on Entanglement Distillation and Swapping is provided. Beginning with a brief history and the basic concepts of the quantum repeaters, the article primarily focuses on the communication model based on the quantum repeater techniques, which mainly consists of two fundamental modules --- the Entanglement Distillation module and the Swapping module. The realizations of Entanglement Distillation are discussed, including the Bernstein's Procrustean method, the Entanglement Concentration and the CNOT-purification method, etc. The schemes of implementing Swapping, which include the Swapping based on Bell-state measurement and the Swapping in Cavity QED, are also introduced. Then a comparison between these realizations and evaluations on them are presented. At last, the article discusses the experimental schemes of quantum repeaters at present, documents some remaining problems and emerging trends in this field.
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Yue Li, Sha Hua, Yu Liu, Jun Ye, and Quan Zhou "Quantum repeaters: fundamental and future", Proc. SPIE 6573, Quantum Information and Computation V, 65730X (10 May 2007); https://doi.org/10.1117/12.717206
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