A team of Chinese scientists has developed the most powerful quantum A world computer that can perform at least one task 100 trillion times faster than the world’s fastest supercomputer.
In 2019, Google announced that it built the first machine to achieve “quantum transcendence.” It was the first to outperform the world’s best supercomputers in quantum computing. Live Science previously reported.. (IBM disputed Google’s claim at the time.) A Chinese team, primarily based at the University of Science and Technology of China in Hefei, reported that a quantum computer named Jiuzhang was 10 billion times faster than Google. did. A description of Jiuzhang and his computational feats was published in the journal on December 3rd. Science.. Assuming both claims are upheld, Jiuzhang will be the second quantum computer to achieve quantum supremacy anywhere in the world.
China has invested heavily in quantum computing, and Xi Jinping government has spent $ 10 billion in quantum information science Institute of country NDTV has reported. As Live Science reports, the country is also a world leader in quantum networks, with data encoded using quantum mechanics transmitted over long distances.
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As Live Science reports, quantum computers can take advantage of the unusual mathematics that dominate the quantum world to perform better than classic computers on certain tasks. When a traditional computer uses bits to perform calculations, the bits can have one of two states (usually represented by 1 or 0), and a qubit or qubit can have many states at the same time. Can exist at. This allows you to solve problems faster than traditional computers. However, while the theory of predicting that quantum computing will beat classical computing has existed for decades, building a practical quantum computer has proven to be much more difficult. ..
Chinese computers use optical circuits to perform calculations (limited to specific questions about the behavior of light particles). Google’s device, Sycamore, uses superconducting material on the chip, much like the basic structure of a traditional computer. Neither is particularly useful as a computer on its own, and Chinese devices have been built to solve one type of problem.
To test Jiuzhang, researchers assigned it a “Gauss Boson Sampling” (GBS) task. In this task, the computer calculates the output of a complex circuit that uses light. The output is represented as a list of numbers. (Light is made up of particles called photons, which belong to the category of particles called bosons.)
Success is measured by the number of photons detected. As an optical circuit in its own right, Jiuzhang detected up to 76 photons in a single test and an average of 43 photons in multiple tests. The calculation time to create a numerical list of each experiment run was about 200 seconds, but TaihuLight, the fastest Chinese supercomputer, took 2.5 billion years to reach the same result. This suggests that quantum computers can run GBS 100 trillion times faster than traditional supercomputers.
According to Xinhua, this does not mean that China still has a fully practical quantum computer. Chinese devices are specialized and are primarily useful as a tool for running GBS. But it’s a major milestone on the way there.
Originally published in Live Science.
China claims the fastest quantum computer in the world
Source link China claims the fastest quantum computer in the world