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Quantum metropolitan optical network based on wavelength division multiplexing
Ciurana Aguilar, Alex and Martinez Mateo, Jesus and Peev, Momtchil and Poppe, Andreas and Walenta, Nino and Zbinden, Hugo and Martín Ayuso, Vicente
Quantum metropolitan optical network based on wavelength division multiplexing.
"Optics Express", v. 22
Quantum Key Distribution (QKD) is maturing quickly. However, the current approaches to its application in optical networks make it an expensive technology. QKD networks deployed to date are designed as a collection of point-to-point, dedicated QKD links where non-neighboring nodes communicate using the trusted repeater paradigm. We propose a novel optical network model in which QKD systems share the communication infrastructure by wavelength multiplexing their quantum and classical signals. The routing is done using optical components within a metropolitan area which allows for a dynamically any-to-any communication scheme. Moreover, it resembles a commercial telecom network, takes advantage of existing infrastructure and utilizes commercial components, allowing for an easy, cost-effective and reliable deployment.
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