On April 29, the special release of the major achievements of the 2024 Zhongguancun Forum was held in Beijing. "Ultra-large-scale integrated optical quantum chips" was released as one of the major achievements. What does this result mean? Let's find out.
At present, quantum computing and quantum communication in the mainland are accelerating towards practical use.
Quantum entanglement is a core resource for studying cutting-edge applications in quantum fundamental physics and quantum computing. However, the core technology related to the core of quantum computer kernels has always been an international problem.
One of the future trends in quantum computing is to realize the advantages of quantum computing on chips and solve specific practical application problems. This goal requires optical quantum computing chips to not only have strong programmability, but also the number of photons that can achieve the advantages of quantum computing. In reality, there have been many theoretical and experimental challenges in how to fabricate multiphoton and high-dimensional quantum entangled states on chips.
After six years of research, mainland scientists have finally developed the world's largest integrated scale - an optical quantum chip with up to 2,500 integrated components, and successfully realized the optical quantum computing and information processing functions based on graph theory. The related results were published in the international academic journal Nature Photonics with the title of "Graph Theory Quantum Photonics of Very Large Scale Ensemble".
"This ultra-large-scale integrated optical quantum chip makes it possible to fabricate, manipulate, measure and verify the multi-photon and high-dimensional quantum entangled states on the chip through the development of core devices such as high-performance quantum light sources, low-loss quantum circuits, and high-efficiency single-photon detectors. The first author of this achievement, Bao Jueming, told reporters.
The development of ultra-large-scale integrated optical quantum chips is of great significance to the field of integrated optical quantum chips. At the hardware level, it has wafer-level chip processing capabilities, and at the architecture level, it can make full use of the highly visual function of graphs and powerful mathematical toolkits, which can provide scalable, programmable, and highly stable quantum chip cores for the development of quantum computers.
Source: Xinhua News Agency
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