US & China Are Investing Big In Quantum Computing Simulation
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Quantum computing is a field of super-computing that utilises quantum-mechanical phenomena such as entanglement and superposition to perform computation. Quantum computers perform calculations based on the probability of an object's state before it is measured, instead of just 1s or 0s, which means they have the potential to process exponentially more data compared to classical computers.
The US Congress has authorised 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 realise 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.
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