Field Experiment on a “Star Type” Metropolitan Quantum Key Distribution Network

Author

Chen, Wei ; Han, Zheng-Fu ; Zhang, Tao ; Wen, Hao ; Yin, Zhen-Qiang ; Xu, Fang-Xing ; Wu, Qing-Lin ; Liu, Yun ; Zhang, Yang ; Mo, Xiao-Fan ; Gui, You-Zhen ; Wei, Guo ; Guo, Guang-Can

Author_Institution

Key Lab. of Quantum Inf., Univ. of Sci. & Technol. of China (USTC), Hefei

Volume

21

Issue

9

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

575

Lastpage

577

Abstract

Quantum key distribution (QKD) networks have recently attracted growing attention. The topology of the local QKD network is the basis of the next-generation global secure communication network. In this letter, we report a realization of a wavelength-routing star type QKD network which can span a metropolis using a commercial backbone optical fiber network without trusted relays. The longest and the shortest fiber lengths between two geographically separated nodes are 42.6 and 32 km, respectively, and the maximum average quantum bit-error rate is below 8%. A novel analysis model with experimental validation is also proposed to evaluate the user´s performance in this network under the condition of maximum multiuser crosstalk.

Keywords

error statistics; optical crosstalk; optical fibre networks; quantum cryptography; telecommunication network routing; telecommunication network topology; QKD; distance 32 km; distance 42.6 km; metropolitan quantum key distribution; multiuser crosstalk; network topology; optical fiber network; quantum bit-error rate; wavelength routing; Field experiment; multiuser crosstalk analysis; quantum key distribution (QKD) network;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2009.2015058

Filename

4787043