Field Experimental "Star Type" Metropolitan Quantum Key Distribution Network

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dc.creatorChen, Wei
dc.creatorHan, Zheng-F
dc.creatorZhang, Tao
dc.creatorWen, Hao
dc.creatorYin, Zhen-Q
dc.creatorXu, Fang-X
dc.creatorWu, Qing-L
dc.creatorYun-Liu
dc.creatorZhang, Yang
dc.creatorMo, Xiao-F
dc.creatorGui, You-Z
dc.creatorWei, Guo
dc.creatorGuo, Guang-C
dc.date2007-08-27
dc.date.accessioned2026-07-07T13:09:08Z
dc.date.available2026-07-07T13:09:08Z
dc.descriptionQuantum key distribution (QKD) network has recently attracted growing attentions. Due to the special characteristics of quantum information, to build a full-connectivity QKD network without trusted relays is a stimulating challenge. In this letter, we report on the first realization of QKD network without trusted relays which covers metropolis in the commercial backbone optical fiber networks. The star topology four-user QKD network automatically addresses the quantum signal with a quantum router (QR) and every user in the network can receive and distribute quantum keys to any others simultaneously. The longest and the shortest length of fibers between two geographically separated nodes are 42.6km and 32km respectively, and the maximum average quantum bit error rate (QBER) is below 8%. This result opens a new possibility for the use of QKD into existing network.
dc.description3 pages, 3 figures, 2 tables
dc.identifierhttps://arxiv.org/abs/0708.3546
dc.identifierhttp://arxiv.org/abs/0708.3546
dc.identifierIEEE Photonics Technology Letters, 21, 575 (2009)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/228638
dc.subjectQuantum Physics
dc.titleField Experimental "Star Type" Metropolitan Quantum Key Distribution Network
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