Australian scientists were able to reduce the level of errors in the work of semiconductor qubits, the elementary cells of a quantum computer, to a level of 0.04%.

This opens the way to creating universal computing machines, says physicists in the journal Nature Electronics.

“We are very grateful to our theoretical colleagues from the University of Sydney, whose ideas helped us to figure out what types of errors occurred in our silicon qubits. Thanks to this, we were able to achieve work accuracy of 99.957%, which is still a world record for devices of this type,” said Andrew Dzurak from the University of New South Wales (Australia).

Dzurak and his university colleagues have for several years been developing the components necessary to build a full-fledged solid-state quantum computer. So, in 2010, they created a quantum single-electron transistor, and in 2012, a high-grade silicon qubit based on the phosphorus-31 atom.

In 2013, they collected a new version of the qubit, which allowed reading data from it with almost 100% accuracy and remained stable for a very long time. In October 2015, Dzurak and his team took the first step towards creating the first silicon quantum computer by combining two qubits into a module that performs the logical OR operation.

Recall that the emergence of quantum computers will become a real threat to cryptocurrencies and cryptography used in blockchain systems, said several top managers of the technology giant IBM.

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