Field test of wavelength-saving quantum key distribution network.
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.
Wang
Shuang
S
Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei 230026, China.
Chen
Wei
W
Yin
Zhen-Qiang
ZQ
Zhang
Yang
Y
Zhang
Tao
T
Li
Hong-Wei
HW
Xu
Fang-Xing
FX
Zhou
Zheng
Z
Yang
Yang
Y
Huang
Da-Jun
DJ
Zhang
Li-Jun
LJ
Li
Fang-Yi
FY
Liu
Dong
D
Wang
Yong-Gang
YG
Guo
Guang-Can
GC
Han
Zheng-Fu
ZF