A research team including renowned Chinese quantum physicist Pan Jianwei announced Friday a significant computing breakthrough, achieving quantum computational advantage.
The team established a quantum computer prototype, named "Jiuzhang," via which a maximum of 76 photons was detected. The study was published in Science magazine online.
This achievement marks that China has reached the first milestone on the path to full-scale quantum computing -- a quantum computational advantage, also known as "quantum supremacy," which indicates an overwhelming quantum computational speedup.
No traditional computer can perform the same task in a reasonable amount of time, and the speedup is unlikely to be overturned by classical algorithmic or hardware improvements, according to the team.
In the study, Gaussian boson sampling (GBS), a classical simulation algorithm, was used to provide a highly efficient way of demonstrating quantum computational speedup in solving some well-defined tasks.
The average detected photon number by the prototype is 43, while up to 76 output photon-clicks were observed.
- China releases new quantum computing software
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- China’s first homegrown quantum computer OS was unveiled in Hefei on Monday
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- After Jiuzhang, Chinese scientists expect to build universal quantum computers in ‘15 to 20 years’
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