Peter is a degree-qualified engineer and experienced freelance journalist, specializing in science, technology and culture. He writes for a variety of publications, including the BBC, Computer Weekly, IT Pro, the Guardian and the Independent. He has worked as a technology journalist for over ten years.
Researchers have developed a new communication paradigm that can let them securely connect a PC to a quantum computer over the internet.
Some companies offer quantum computing services through the cloud, including IBM and Amazon Web Services , although the scientists argue these aren't 100% secure or scalable. Connecting a PC to a quantum computer using the new method, however, could provide a way for users to run a computation remotely but keep the structure hidden — while enabling verification of the computation by embedding hidden tests.
In blind quantum computing, the user connects to the quantum computer over the internet using a photon-detecting and reconfiguring device to steer the qubits of the quantum computer. Therefore, the input, algorithms and output effectively become concealed from the quantum computer. The remote computer and the quantum computer continually exchange information throughout the computation. Consequently, the quantum memory stores the photonic states for longer than previously required, due to the ongoing communication. Transmissions between the PC and quantum computer are also encrypted using one-time pad encryption — a highly secure form of encryption.
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