Latest research report: China develops Zuchongzhi-3 105 Quantum Computing prototype faster than Google

China and the United States have once again taken the lead in the quantum computer race. According to reports, research teams from Peking University, Southern University of Science and Technology, and University of Science and Technology of China have made breakthroughs in the field of quantum computing. They discovered that using Metasurface, a planar structure that controls light, can more compactly generate and manipulate entangled Photons, opening up a new pathway for the development of quantum networks.

Novel Quantum Information Processing

Quantum information processing relies on multiple Photon entanglements to process a large amount of data effectively. Generating these Photons efficiently remains a major challenge. Traditional methods involve using quantum non-linear optical processes, which are difficult to scale for a large number of Photons. If linear splitting and quantum interference are used, complex and precise setups are required, which are prone to losses and crosstalk.

Researchers have discovered a new method, in which they guide multiple Photons from different angles to a specially designed gradient metasurface, manipulating these Photons on the metasurface to generate entangled Photon states in a quantum manner. This technology can not only produce various entangled states but also merge multiple entangled Photons into larger and more complex groups, thereby encoding more quantum information in a smaller space, potentially advancing quantum computing and communication technologies.

Multiphoton Path-Polarization Entanglement Through A Single Gradient Metasurface ( Note ) The author of this work, Professor Ying Gu, calls this new approach a new perspective on quantum information processing. He said, 'It's like finding a shortcut in a maze, using a single metasurface to do the job instead of trying to manipulate complex optical setups.' The process of creating and manipulating Photon entanglement becomes simpler, suitable for creating micro-scale quantum devices that can be installed on chips, making it an excellent solution for future quantum computing and communication applications.

By using new methods, many quantum computer application scenarios may be more easily realized; metasurfaces can be used to generate entangled photons and transmit them to multiple users, thereby promoting the construction of quantum networks. In addition, metasurfaces can serve as building blocks for processing more photons, potentially advancing the development of small quantum laptops.

Zuchong No. 3 breaks Google's quantum computer computing record

Google once claimed to have taken the lead in the field of quantum computing in 2019, processing random tasks at a speed of 200 seconds, but was soon surpassed by the Chinese University in 2023 with a faster computation time of fifteen seconds.

The Zuchongzhi-3 quantum computing prototype machine developed by a Chinese team ( – 105 Qubit machine) is claimed to outperform Google's six quantum volume levels publicly announced last October, breaking the speed of quantum random circuit sampling.

Note: Multiphoton Path-Polarization Entanglement Through A Single Gradient Metasurface ( The co-authors of the research paper on multiphoton path-polarization entanglement through a single gradient metasurface ) are Qi Liu, Xuan Liu, Yu Tian, Zhaohua Tian, Guuixin Li, Xi-Feng Ren, QiHuang Kong, and Ying Gu.

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