Realizing long-term quantum cryptography

Mirza, Abdul; Petruccione, Francesco

doi:10.1364/josab.27.00a185

Cited by 45 publications

(25 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The QuantumCity initiative consists of a four-node network within various suburbs in the eThekwini Municipality connected together in a star-configuration [5]. The quantum links vary between 2.6 km to 27 km as illustrated in FIGURE 1.…”

Section: Quantumcity Initiativementioning

confidence: 99%

Recent Findings From The Quantum Network in Durban

Mirza¹,

Petruccione²,

Ralph³

et al. 2011

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

The QuantumCity and QuantumStadium projects are aimed at developing and examining quantum-secured communication networks in a long-term, commercial environment. Many Quantum Key Distribution (QKD) experimental setups to date have failed to provide a long-term analysis of the systems as well as report on the robustness of the devices within an industrial context. The aforementioned projects provide an insight into these characteristics respectively. The projects are hosted within the eThekwini Municipality's fibre optic network. They securely connect relevant Municipal buildings, providing the client nodes with an option of quantumsecured communication. The QuantumCity initiative has deployed QKD solutions for almost 2 years while the QuantumStadium project ran for the duration of the 2010 FIFA World Cup.

show abstract

Section: Quantumcity Initiativementioning

confidence: 99%

Recent Findings From The Quantum Network in Durban

Mirza¹,

Petruccione²,

Ralph³

et al. 2011

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

show abstract

“…Consequently previous approaches at building quantum networks have allocated additional dark fibres for quantum communication, distinct from the fibres carrying conventional data traffic. [5][6][7][8][9] The simplest configuration of a quantum network consists of three geographically separated nodes, which are linked by quantum channels. 10 This differs from simple point-to-point links consisting of only two nodes.…”

Section: Introductionmentioning

confidence: 99%

Cambridge quantum network

et al. 2019

View full text Add to dashboard Cite

Future-proofing current fibre networks with quantum key distribution (QKD) is an attractive approach to combat the ever growing breaches of data theft. To succeed, this approach must offer broadband transport of quantum keys, efficient quantum key delivery and seamless user interaction, all within the existing fibre network. However, quantum networks to date either require dark fibres and/or offer bit rates inadequate for serving a large number of users. Here we report a city wide high-speed metropolitan QKD network-the Cambridge quantum network-operating on fibres already populated with high-bandwidth data traffic. We implement a robust key delivery layer to demonstrate essential network operation, as well as enabling encryption of 100 Gigabit per second (Gbps) simultaneous data traffic with rapidly refreshed quantum keys. Network resilience against link disruption is supported by high-QKD link rates and network link redundancy. We reveal that such a metropolitan network can support tens of thousands of users with key rates in excess of 1 kilobit per second (kbps) per user. Our result hence demonstrates a clear path for implementing quantum security in metropolitan fibre networks.npj Quantum Information (2019) 5:101 ; https://doi.

show abstract

“…Even quantum computers, that will break most current public keys [3,4], cannot harm quantum encryption. Based on these intriguing quantum features, metropolitan quantum networks have been implemented around the world [5][6][7][8][9][10][11][12][13][14][15]. However, the long-haul link between metropolitan networks is currently missing [16].…”

Section: Introductionmentioning

confidence: 99%