Quantum computers take key step toward curbing errors
Physicists at Google have reached what they describe as their second milestone along the path to a useful quantum computer. At a laboratory in Santa Barbara, California, they have demonstrated that they can lower the error rate of calculations by making their quantum code bigger.
The feat, reported in Nature on 22 February1, follows up on a celebrated 2019 experiment in which a Google quantum computer achieved ‘quantum advantage’ — by performing a calculation that would have taken thousands of years on an ordinary computer. Read More…