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Quantum computing is a field of supercomputing that utilizes quantum-mechanical phenomena such as entanglement and superposition to perform computation. The US Congress has authorized up to $1.2 billion of research funding for quantum information science, including computing. Some of the world’s largest technology companies are rapidly building prototype devices, with Google reportedly documenting the first case of a quantum computer that can beat classical computers at a specific task.
China is also developing its own quantum computers. Scientists from Hefei-based University of Science and Technology of China have independently developed the country’s first control system for future quantum computers in 2018. The country is also investing in a $10 billion national laboratory for quantum information science in Hefei, due to open next year.
Quantum simulators permit the study of quantum systems that are difficult to study in the laboratory and impossible to model with a supercomputer.
A group of Chinese scientists developed a method in simulating quantum computing. The team, led by Wu Junjie, a leading expert from the National University of Defense Technology, proposed a method to realize an efficient simulator of quantum algorithms. They applied the method to study random quantum circuits, which can quantify precisely the memory usage and the time requirements of random quantum circuits.
Wu said quantum computers’ calculation ability has outperformed all supercomputers, and achieving quantum supremacy is a milestone in quantum computing development.
Assessing this supremacy needs an efficient quantum computing simulator, which will also serve as a significant tool to accelerate scientific research on quantum computing, Liu Yong, a member of the QUANTA team, said, according to ecns.cn.
The method was demonstrated on China’s Tianhe-2 supercomputer, Wu added.
The achievement was published on the international physics journal Physical Review Letters.
Learn more about quantum simulation and other applications at the coming Quantum Tech Conference organized by iHLS on November 18, 2019 at the Lago Conference Center, Rishon LeZion.
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