Published on: 2026-05-14
Source: People’s Republic of China in Russian –
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Hefei, May 14 /Xinhua/ — Chinese scientists have developed a prototype of a programmable quantum computer called “Zuchongzhi-4,” which has set a new world record in the field of optical and quantum information technologies, according to a research article published on Wednesday in the journal Nature.
A team of scientists from the University of Science and Technology of China (USTC) used the above-mentioned prototype to solve the problem of sampling Gaussian bosons (GBS) at a speed more than 10 to the power of 54 times exceeding the speed of the most powerful supercomputer in the world today, according to the study.
Researchers stated that this prototype for the first time enabled the manipulation and detection of quantum states involving up to 3050 photons, which turned out to be significantly higher than the indicator of 255 photons achieved during the development of the previous prototype “Czuizhan-3.”
Modern key quantum computing technologies include superconducting systems, systems with ion traps, photonic systems, and systems with a neutral atom. The prototype series “Czuqzhan” encodes quantum bits using photons and performs quantum computations through manipulating and measuring these photons.
Since its successful creation in 2020, the series of “Qizhuang” prototypes has undergone several stages of modernization and iteration, achieving “quantum superiority” and repeatedly setting world records.
USTC Professor Lu Chaoyang reported that the research group has developed a highly efficient light source based on an optical parametric generator and interferometer with spatiotemporal mixed encoding.
By combining 1024 highly efficient optical fields in a compressed state into an 8176-mode space-time system with hybrid coding, the team was able to manipulate and detect up to 3050 photons.
The prototype “Ziyuanzhan-4” represents a significant leap in terms of scale and complexity of photonic quantum processors with low losses, noted Lu Chaoyan. -0-
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