BT and Toshiba Europe have installed the UK’s first industrial quantum-secure network.
The 6km link connects the National Composites Centre (NCC) research and development facility and the Centre for Modelling & Simulation (CFMS) in Bristol as part of the AQuaSeC project to demonstrate how Quantum Key Distribution (QKD) can be used to securely share encryption keys using a stream of single photons.
This replaces a ‘manual’ approach of physically transporting sensitive data on portable storage devices between the NCC and CFMS sites in Emerson’s Green and Filton in North Bristol, as well as at the University of Bristol.
Using standard optical fibre from Openreach, Toshiba’s QKD system enables the distribution of thousands of cryptographic keys per second. Its innovative multiplexing compatibility allows the data and the quantum keys to be transmitted on the same fibre, eliminating the need for costly dedicated infrastructure for key distribution.
While the first deployment covers a range of 6km, the current maximum range extends up to 120km, allowing ultra-secure data transmission across major metropolitan environments.
The network also benefits from Toshiba’s Active Stabilisation technology, which allows the system to distribute key material continuously, in even the most challenging operating conditions, without any user intervention. This avoids the need for recalibration of the system due to temperature-induced changes in the fibre lengths.
“This first industrial deployment of a quantum-secure network in the UK is a significant milestone as we move towards a quantum-ready economy. We’re excited to be working alongside our long-term partner in Toshiba, as well as the NCC and CFMS as industry-leading bodies in the UK, to demonstrate the ultra-secure nature of quantum cryptography,” said Prof. Andrew Lord, Head of Optical Technology at BT. “The power of quantum computing offers unprecedented opportunity for UK industry, but this is an essential first step to ensure its power can be harnessed in the right way and without compromising security.”
“Our solution can be implemented on standard BT fibre infrastructure and is applicable to a wide range of different applications, allowing organisations to ensure the long-term security of their data and protect it from even the most powerful computers,” said Dr. Andrew Shields, Head of Quantum Technology at Toshiba Europe Limited. “With the UK government’s assertion earlier this month that it wants to be the ‘world’s first quantum-ready economy’, quantum-secure networks are vital to it achieving this ambition, and we’re excited to be at the forefront of making this a reality.”
“Enabling higher levels of collaborative access for the distributed supply chain, this will unlock the potential for IIoT (Industrial Internet of Things) where ultra-secure transmission and sharing of data is crucial,” said Marc Funnell, Head of Digital, and Director of DETI at the NCC. “As part of Digital Engineering Technology & Innovation (DETI), a strategic programme of the West of England Combined Authority (WECA), the quantum-secure link will demonstrate the potential for the distributed offsite control of factories. Linked with 5G-Encode, this will provide access to a 5G industrial test bed at the NCC which will showcase the security, reliability and connectivity required to advance UK manufacturing.”
“As more enterprises embrace digital technologies in different ways, securing the transmission of data becomes more critical,” said Nathan Harper, Head of CFMS’ Engineering Compute Services. “CFMS is pioneering the use of digital engineering, deploying technologies such as AI or digital twins in which the secure transmission of data becomes essential. Being part of the QKD trial, sharing data using advanced encryption techniques and understanding the performance of these with our partners is therefore both exciting and very useful.”
Toshiba has multiple Proofs of Concept (PoCs) currently in operation globally – these include sites within the US and Japan, working within highly sensitive areas such as healthcare and financial services.
While this is a point to point link, researchers at the University of Bristol have demonstrated QKD over a network with multiple users.
Last month the UK government announced the creation of the National Quantum Computing Centre (NQCC) – expected to be completed in 2022 – as part of the UK’s £1 billion National Quantum Technologies Programme, as further evidence of its commitment to a quantum future.
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