7 years, 3 months ago

Quantum won't just secure privacy, it'll change the whole internet

Data security is reliant on mathematical difficulty: put simply, it's easier to encrypt something than it is to decrypt it. This could all change: what if it were possible to send a message that wasn't protected by the limits of practical computing power, but by the laws of physics? One straight-forward way to make the internet harder to intercept would be to make fibre-optic cables harder to tap. As you can't split a photon with a prism, any attempt to intercept the signal would throw up errors or be detectable by the intended receiver. This causes headaches for researchers, but means that in a quantum internet, if someone intercepts a message, they'll introduce changes and alert the people communicating.

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