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26 April 2024 |
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Article overview
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Entangling metropolitan-distance separated quantum memories | | Xi-Yu Luo
; Yong Yu
; Jian-Long Liu
; Ming-Yang Zheng
; Chao-Yang Wang
; Bin Wang
; Jun Li
; Xiao Jiang
; Xiu-Ping Xie
; Qiang Zhang
; Xiao-Hui Bao
; Jian-Wei Pan
; | | Date: |
28 Jan 2022 | | Abstract: | Quantum internet gives the promise of getting all quantum resources
connected, and it will enable applications far beyond a localized scenario. A
prototype is a network of quantum memories that are entangled and well
separated. Previous realizations are limited in the distance. In this paper, we
report the establishment of remote entanglement between two atomic quantum
memories physically separated by 12.5 km directly in a metropolitan area. We
create atom-photon entanglement in one node and send the photon to a second
node for storage. We harness low-loss transmission through a field-deployed
fiber of 20.5 km by making use of frequency down-conversion and up-conversion.
The final memory-memory entanglement is verified to have a fidelity of 90% via
retrieving to photons. Our experiment paves the way to study quantum network
applications in a practical scenario. | | Source: | arXiv, 2201.11953 | | Services: | Forum | Review | PDF | Favorites | |
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