Field test of the wavelength-saving quantum key distribution network

Details Field test of the wavelength-saving quantum key distribution network Field test of the wavelength-saving quantum key distribution network

2012-03-20

arxiv.org/abs/1203.4321v1

Optics Letters, 35, 2454-2456(2010)

Physics

Quantum Physics

Scientific paper

10.1364/OL.35.002454

We propose a wavelength-saving topology of quantum key distribution(QKD) network based on passive optical elements, and report the field test of this network on the commercial telecom optical fiber. In this network, 5 nodes are supported with 2 wavelengths, and every two nodes can share secure keys directly at the same time. All QKD links in the network operate at the frequency of 20 MHz. We also characterized the insertion loss and crosstalk effects on the point-to-point QKD system after introducing this QKD network.

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