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Jing, Bo; Wang, Xu-Jie; Yu, Yong; Sun, Peng-Fei; Jiang, Yan; Yang, Sheng-Jun; Jiang, Wen-Hao; Luo, Xi-Yu; Zhang, Jun; Jiang, Xiao; Bao, Xiao-Hui; Pan, Jian-Wei
Nature photonics, 03/2019, Letnik: 13, Številka: 3Journal Article
Quantum memory networks as an intermediate stage in the development of a quantum internet1 will enable a number of significant applications2-5. To connect and entangle remote quantum memories, it is best to use photons. In previous experiments6-13, entanglement of two memory nodes has been achieved via photon interference. Going beyond the state of the art by entangling many quantum nodes at a distance is highly sought after. Here, we report the entanglement of three remote quantum memories via three-photon interference. We employ laser-cooled atomic ensembles and make use of a ring cavity to enhance the overall efficiency of our memory–photon entanglement. By interfering three single photons from three separate set-ups, we create entanglement of three memories and three photons. Then, by measuring the photons and applying feed-forward, we achieve heralded entanglement between the three memories. Our experiment may be employed as a building block to construct larger and complex quantum networks14,15.The entanglement of three remote quantum memories based on 87Rb atoms is created via three-photon interference by enhancing the memory–photon entanglement in ring cavities, demonstrating a genuine quantum network involving more than two quantum nodes.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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