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Researchers Develop Data Bus for Quantum Computer


Quantum connections.

Scientists have developed a protocol that can be used to connect quantum systems that are encoded differently.

Credit: Harald Ritsch/University of Innsbruck

Researchers at the University of Innsbruck in Austria say they have developed a technique to transfer quantum information between systems that are encoded in different ways.

Other scientists already have developed small-scale quantum processors and memories, and they have used different protocols to encode logical quantum bits (qubits).

"We have developed a protocol that allows us to merge quantum systems that are encoded differently," says University of Innsbruck researcher Hendrik Poulsen Nautrup.

The researchers proposed a method that involves locally modifying specific elements of the encoded qubits, a process known as lattice surgery, which enables them to couple systems such as quantum processors and memories.

The team says the next step is for quantum information to be teleported from the processor to the memory, and vice versa.

"Similar to a data bus in a conventional computer, scientists can use this technique to connect the components of a quantum computer," Nautrup notes.

From University of Innsbruck
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