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Perfectly secure cloud computing possible thanks to quantum physics

As numerous companies continue their push to get us to entrust our data to the cloud, there are many still justifiably concerned about the security of cloud computing-based services. Now an international team of scientists have demonstrated that perfectly secure cloud computing is possible by combining the power of quantum computing with the security of quantum cryptography. They carried out what they claim is the first demonstration of “blind quantum computing,” in which a quantum computation was carried out with the input, computation, and output all remaining unknown to the computer, and therefore, also any eavesdroppers.

While it is expected that quantum computers will play an important role in future information processing, some believe that – like today’s supercomputers – they will be limited to a few specialized facilities around the world. While this brings to mind the quote most often attributed to IBM chairman Thomas Watson in 1943, “I think there is a world market for maybe five computers,” given the inherent difficulties in building quantum devices, there’s every chance such a scenario will eventuate – at least in the near term.
via Gizmag

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