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Willow chip can realize that the error rate decreases exponentially with the increase of the number of quantum bits, which solves the key challenge of quantum error correction that has been studied in the field of quantum computing for nearly 30 years. Google has tested quantum bit grids of different sizes, which can halve the error rate every time. This is called "below the threshold", which has been a difficult problem that has not been overcome since Peter Shor proposed quantum error correction in 1995.

Google recently released a new generation of quantum computing chip called Willow, which caused a great sensation in the scientific and technological circles.Google recently released a new generation of quantum computing chip called Willow, which caused a great sensation in the scientific and technological circles.

Willow completed a standard benchmark calculation in less than 5 minutes, and today's fastest supercomputer takes "10 to the 25th power" years, which is far beyond the age of the universe. This achievement not only marks the remarkable improvement of quantum computing ability, but also provides new possibilities for the practical application of quantum error correction technology.