Researchers Develop Secure Multi-User Quantum Communication Network
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Revolutionary quantum breakthrough paves way for safer online communication:
The world is one step closer to having a totally secure internet and an answer to the growing threat of cyber-attacks, thanks to a team of international scientists who have created a multi-user quantum communication network which could transform how we communicate online.
The invention led by the University of Bristol, revealed today in the journal Science Advances, has the potential to serve millions of users, is understood to be the largest-ever quantum network of its kind, and could be used to secure people's online communication, particularly in these internet-led times accelerated by the COVID-19 pandemic.
By deploying a new technique, harnessing the simple laws of physics, it can make messages completely safe from interception while also overcoming major challenges which have previously limited advances in this little used but much-hyped technology.
Lead author Dr Siddarth Joshi, who headed the project at the university's Quantum Engineering Technology (QET) Labs, said: "This represents a massive breakthrough and makes the quantum internet a much more realistic proposition. Until now, building a quantum network has entailed huge cost, time, and resource, as well as often compromising on its security which defeats the whole purpose."
"Our solution is scalable, relatively cheap and, most important of all, impregnable. That means it's an exciting game changer and paves the way for much more rapid development and widespread rollout of this technology."
Journal Reference:
Siddarth Koduru Joshi, Djeylan Aktas, Soren Wengerowsky, et al. A trusted node-free eight-user metropolitan quantum communication network [open], Science Advances (DOI: 10.1126/sciadv.aba0959)
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