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Taking on quantum computer

What if quantum computers, with their high computing power, were already available: what would happen? How would quantum computing transform communications and the way they are encrypted? Romain Alléaume, a researcher at Télécom Paris, talks to us about his research for the future of cryptography.

A hypothetical quantum computer with its high computing power would be like a sword of Damocles to current cryptography. It would be strong enough to be able to decrypt a great number of our  secure communications, in particular as they are implemented on the internet. “It poses a threat in terms of protecting secrets,” says Romain Alléaume, a researcher at Télécom Paris in quantum information and cryptography, who quickly adds that “such a computer does not yet exist.”