title: Field test of wavelength-saving quantum key distribution network.
abstract: We propose a wavelength-saving topology of a quantum key distribution (QKD) network based on passive optical elements, and we report on the field test of this network on commercial telecom optical fiber at the frequency of 20 MHz. In this network, five nodes are supported with two wavelengths, and every two nodes can share secure keys directly at the same time. We also characterized the insertion loss and cross talk effects on the point-to-point QKD system after introducing this QKD network.
authors.affiliation: Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei 230026, China.
authors.forename: Shuang
authors.initials: S
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Zhen-Qiang
authors.initials: ZQ
authors.lastname: Yin
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhang
authors.forename: Tao
authors.initials: T
authors.lastname: Zhang
authors.forename: Hong-Wei
authors.initials: HW
authors.lastname: Li
authors.forename: Fang-Xing
authors.initials: FX
authors.lastname: Xu
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zhou
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.forename: Da-Jun
authors.initials: DJ
authors.lastname: Huang
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Zhang
authors.forename: Fang-Yi
authors.initials: FY
authors.lastname: Li
authors.forename: Dong
authors.initials: D
authors.lastname: Liu
authors.forename: Yong-Gang
authors.initials: YG
authors.lastname: Wang
authors.forename: Guang-Can
authors.initials: GC
authors.lastname: Guo
authors.forename: Zheng-Fu
authors.initials: ZF
authors.lastname: Han