Jiuzhang (quantum computer)

Jiuzhang is a 76-qubit photon-based quantum computer prototype developed by the University of Science and Technology of China (USTC). It is named after Jiuzhang suanshu, an ancient Chinese mathematical classic.

On 3 December 2020, USTC announced on Science that Jiuzhang has successfully conducted a Gaussian Boson sampling task in 200 seconds, where it would have taken half a billion years on the fastest classical non-quantum computer, [1] and 2.5 billion years on the Sunway TaihuLight supercomputer. [2] The Chinese team claims it to be 10 billion times faster than Google's superconductor-based Sycamore processor, and as such, becomes the second computer to attain quantum supremacy. [3]

References

Conover, Emily (2020-12-03). "The new light-based quantum computer Jiuzhang has achieved quantum supremacy". Science News. Retrieved 2020-12-19.
December 2020, Rafi Letzter-Staff Writer 07. "China claims fastest quantum computer in the world". livescience.com. Retrieved 2020-12-19.
Ball, Philip (2020-12-03). "Physicists in China challenge Google's 'quantum advantage'". Nature. 588 (7838): 380–380. doi:10.1038/d41586-020-03434-7.

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[1] Conover, Emily (2020-12-03). "The new light-based quantum computer Jiuzhang has achieved quantum supremacy". Science News. Retrieved 2020-12-19.

[2] December 2020, Rafi Letzter-Staff Writer 07. "China claims fastest quantum computer in the world". livescience.com. Retrieved 2020-12-19.

[3] Ball, Philip (2020-12-03). "Physicists in China challenge Google's 'quantum advantage'". Nature. 588 (7838): 380–380. doi:10.1038/d41586-020-03434-7.