China has built the world’s first dual-core quantum computer, a development that could significantly enhance efficiency. The breakthrough signaled that Chinese quantum computing technology was entering a new stage. While other quantum computers rely on high energy consumption and need to be run in temperatures close to absolute zero, the design of this computer uses neutral atoms – which consume less energy and make the machine easier to maintain.
The twin cores support parallel computing – a function compared to two brains operating together – and can divide tasks between them or correct each other’s errors. The computer, named Hanyuan-2, was developed by CAS Cold Atom Technology, a tech firm affiliated with the Chinese Academy of Sciences (CAS) and based in Wuhan, capital of Hubei province. Quantum computers perform calculations and solve complex problems using qubits – or quantum bits – a fundamental unit of information. Developers globally have struggled when attempting to handle millions of qubits, prompting some to adopt a pragmatic approach by focusing on industrial applications involving a moderate number of qubits – typically ranging from a few dozen to several hundred. Hanyuan-2 exemplifies this strategy. Equipped with 200 qubits, its core performance metrics, including qubit lifetime, had reached “world-class standards”, the report said. Unlike alternative quantum technologies that rely on ions, photons or artificial atoms, the computer uses neutral, uncharged atoms – which reduce energy consumption and help keep the operating temperature above that needed for other advanced computers.
“The Hanyuan-2 adopts a standard cabinet-style integrated design and only requires a small laser cooling system to operate,” Tang Biao, General Manager of the company, said. He added that the machine’s total power consumption was less than 7 kilowatts, meaning it could be used in ordinary conditions rather than just in ultra-low temperatures. The report said the machine had built on more than two decades of expertise in quantum technology. In November last year, the company’s previous model, the Hanyuan-1, passed a significant commercial milestone by securing the first contracts with domestic and foreign customers, the South China Morning Post reports.
