Quantum world-first—researchers reveal accuracy of two-qubit calculations in sil

https://phys.org/news/2019-05-quantum-world-firstresearchers-reveal-accuracy-two-qubit.html

Quantum physicists have often said that "to build a practical Quantum Computer, one needs millions of quibits." Why? Because one way to get the qubit error rate down is to use qubits.

With this result, we don't need millions of qubits to get the error rates down!

""But for most of those important applications, millions of qubits will be needed, and you're going to have to correct quantum errors, even when they're small," Professor Dzurak says.

....

"The more accurate your qubits, the fewer you need—and therefore, the sooner we can ramp up the engineering and manufacturing to realise a full-scale quantum computer.""