This appeared last week:
UNSW researchers use silicon in quantum computing breakthrough
By Digital Nation Staff on Jan 24, 2022 7:00AM
UNSW researchers have established a viable solution for 99 percent accurate quantum computing processing using silicon.
The UNSW team, led by Professor Andrea Morello and the Netherlands’ Delft University of Technology, led by Professor Lieven Vandersypen used a method called gate set tomography to certify their quantum processors’ performance.
According to Morello, “When the errors are so rare, it becomes possible to detect them and correct them when they occur. This shows that it is possible to build quantum computers that have enough scale, and enough power, to handle meaningful computation.”
"This piece of research is an important milestone on the journey that will get us there.”
This breakthrough in the emerging technology paves the way for real world manufacturing and application of quantum chips that are compatible with current silicon chip factories.
Morello et al’s achievement comes after his previous demonstration that through isolating nuclear spins from their environments he could preserve quantum information in silicon for up to 35 seconds.
According to Morello, this is nearly a million times longer than both Google and IBM’s superconducting quantum computers whose preservation lifetime is approximately a hundred microseconds.
“In the quantum world, 35 seconds is an eternity,” he said.
However in isolating the qubits in this way, they were unable to interact with one another — which is critical in computational performance.
I pass this on in the expectation that one of my clever readers will explain to us all just why computr with 99% accuracy that seems to only operate for 35 seconds could be seen as progress!
Koala Stamp and Gold Star to the first comprehensible answer!
David.
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