The Madrid Quantum Network: A Quantum-Classical Integrated Infrastructure

Martín, Vicente; Aguado, Alejandro; Salas, Pedro J.; Sanz, A.; Brito, Juan P.; López, Diego; López, Vı́ctor; Pastor, Antonio; Folgueira, Jesús; Brunner, Hans H.; Bettelli, S.; Fung, Fred; Comandar, L. C.; Wang, D.; Poppe, Andreas; Peev, Momtchil

doi:10.1364/networks.2019.qtw3e.5

Cited by 16 publications

(14 citation statements)

References 5 publications

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“…This network connected three different sites using CV-QKD. The flexibility of this network was enhanced with the aid of an SDN technique [163], and the co-propagation of quantum and classical signals in the same optical fiber was demonstrated in [178]. In this paper, the issues of co-fiber transmission and SDN aided QKD networking will be discussed in Sections V-A and VI-A, respectively.…”

Section: ) Madrid Metropolitan Networkmentioning

confidence: 99%

“…Specifically, it is expected to have a high secret-key throughput and low latency to fulfil the demanding security requirements of users.  Compatibility: Ideally, it should support the co-fiber transmission of the quantum and classical signals [47], [127], [128], [178], [182] in order to reduce costs. The pervasive legacy networks can provide abundant fiber resources for QKD networks, hence integrating QKD with legacy networks is one of the top priorities in facilitating the deployment and increasing the popularity of QKD.…”

Section: A Trade-offs In Qkd Networkmentioning

confidence: 99%

See 1 more Smart Citation

The Evolution of Quantum Key Distribution Networks: On the Road to the Qinternet

Cao

Zhao

Qin

et al. 2022

IEEE Commun. Surv. Tutorials

204

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Section: ) Madrid Metropolitan Networkmentioning

confidence: 99%

Section: A Trade-offs In Qkd Networkmentioning

confidence: 99%

The Evolution of Quantum Key Distribution Networks: On the Road to the Qinternet

Cao

Zhao

Qin

et al. 2022

IEEE Commun. Surv. Tutorials

204

View full text Add to dashboard Cite

“…Using network slicing to control encryption is relatively novel, but nevertheless has already been considered theoretically in [10] and [11] by utilising QKD in tandem with a QRA (specifically, a QRA version of Elliptic-Curve Cryptography), and has also performed experimentally over the Bristol City 5G UK Test Network in the works of [12][13][14], by applying QKD to 5G networking. Moreover, in [15], proof-of-transit of the 5G data traffic is demonstrated, using cryptographic techniques with QKD over the Madrid Quantum Network [16] -this network has also been used to demonstrate securing the management of the SDN control plane through QKD in [17,18]. However, what differentiates our work is that we dynamically control the type of encryption -Diffie-Hellman+AES, QRA+AES, QKD+AES, or no encryption at all -to address the realistic scenario in which different data packets in a 5G network will have varying security requirements.…”

Section: Introductionmentioning

confidence: 99%

5G network slicing with QKD and quantum-safe security

Wright

White

Parker

et al. 2021

J. Opt. Commun. Netw.

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We demonstrate how the 5G network slicing model can be enhanced to address data security requirements. In this work we demonstrate two different slice configurations, with different encryption requirements, representing two diverse use-cases for 5G networking -namely, an enterprise application hosted at a metro network site, and a content delivery network. We create a modified software-defined networking (SDN) orchestrator which calculates and provisions network slices according to the requirements, including encryption backed by quantum key distribution (QKD), or other methods. Slices are automatically provisioned by SDN orchestration of network resources, allowing selection of encrypted links as appropriate, including those which use encryption with standard Diffie-Hellman key exchange, QKD or quantum-resistant algorithms (QRAs), as well as no encryption at all. We show that the set-up and tear-down times of the network slices takes of the order of 1-2 minutes, which is at least an order of magnitude improvement over manually provisioning a link today.

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“…In [20], a real-time monitoring of QKD parameters in an SDNcontrolled QKD network was used to switch the quantum channel into a different optical fibre route under a physicallayer attack mitigation experiment. In the Madrid Quantum Network, the demonstration of a dynamic Software-defined CV-QKD quantum network was undertaken using commercial optical switches [16], [17]. All of the previous mesh DV-QKD networks used trusted nodes or did not coexist quantum and classical channels in the same fibre.…”

Section: Introductionmentioning

confidence: 99%

Dynamic DV-QKD Networking in Fully-Meshed Software-Defined Optical Networks

Alia,

Tessinari,

Hugues-Salas

et al. 2021

Preprint

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We demonstrate for the first time a trusted node free fully meshed metro network with dynamic discrete-variable quantum key distribution DV-QKD networking capabilities across four optical network nodes. A QKD-aware centralised SDN controller is utilised to provide dynamicity in switching and rerouting. The feasibility of coexisting a quantum channel with carrier-grade classical optical channels over field-deployed and laboratory-based fibres is experimentally explored in terms of achievable quantum bit error rate, secret key rate as well as classical signal bit error rate. Moreover, coexistence analysis over multi-hops configuration using different switching scenarios is also presented. The secret key rate dropped 43% when coexisting one classical channel with 150 GHz spacing from the quantum channel for multiple links. This is due to the noise leakage from the Raman scattering into the 100 GHz bandwidth of the internal filter of the Bob DV-QKD unit. When coexisting four classical channels with 150 GHz spacing between quantum and the nearest classical channel, the quantum channel deteriorates faster due to the combination of Raman noise, other nonlinearities and high aggregated launch power causing the QBER value to exceed the threshold of 6% leading the SKR to reach a value of zero bps at a launch power of 7 dB per channel. Furthermore, the coexistence of a quantum channel and six classical channels through a fielddeployed fibre Test Network is examined.

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The Madrid Quantum Network: A Quantum-Classical Integrated Infrastructure

Cited by 16 publications

References 5 publications

The Evolution of Quantum Key Distribution Networks: On the Road to the Qinternet

The Evolution of Quantum Key Distribution Networks: On the Road to the Qinternet

5G network slicing with QKD and quantum-safe security

Dynamic DV-QKD Networking in Fully-Meshed Software-Defined Optical Networks

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