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Cloud-Based Quantum Computing Will Allow Secure Calculation on Encrypted Bits


When quantum computers eventually reach larger scales, they’ll probably remain pretty precious resources, locked away in research institutions just like our classical supercomputers. So anyone who wants to perform quantum calculations will likely have to do it in the cloud, remotely accessing a quantum server somewhere else. A new double-blind cryptography method would ensure that these calculations remain secret. It uses the uncertain, unusual nature of quantum mechanics as a double advantage.

Imagine you’re a developer and you have some code you’d like to run on a quantum computer. And imagine there’s a quantum computer maker who says you can run your code. But you can’t trust each other — you, the developer, don’t want the computer maker to rip off your great code, and the computer builder doesn’t want you to peep its breakthrough machine. This new system can satisfy both of you.

Stefanie Barz and colleagues at the University of Vienna’s Center for Quantum Science and Technology prepared an experimental demonstration of a blind computing technique, and tested it with two well-known quantum computing algorithms.


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