Source: CCTV News
From the Chinese University of Science and Technology, it has been learned that Professor Pan Jianwei's team has made a major breakthrough in the direction of quantum error correction based on the superconducting quantum processor "Zhu Chongzhi 3.2", achieving the significant progress of "below the threshold, the more corrections, the more accurate", laying an important foundation for the practical application of quantum computers. The related results were published in the international academic journal "Physical Review Letters" on December 22.
In 2025, the Chinese University of Science and Technology, based on the 107-qubit "Zhu Chongzhi 3.2" quantum processor, proposed and implemented a new "fully microwave quantum state leakage suppression architecture". The performance of the "Zhu Chongzhi 3.2" processor in terms of single-qubit gate manipulation accuracy, two-qubit gate manipulation accuracy, and readout accuracy has been comprehensively improved compared to the previous generation processor. Based on the performance improvement, the research team combined the fully microwave quantum state leakage suppression architecture to achieve a surface code logical qubit with a code distance of 7. The logical error rate significantly decreases as the code distance increases, proving that the system is operating below the error correction threshold and successfully achieving the goal of "the more corrections, the more accurate".
Professor Zhu Xiaobo from the Chinese University of Science and Technology introduced that this is similar to many people voting, where only when each person's judgment is accurate can the vote be accurate. Otherwise, as the number of voters increases, the votes become more inaccurate. Therefore, ensuring that each person's accuracy exceeds a threshold allows the team's advantage to be played, meaning that as the number of qubits increases, the more corrections, the more accurate.
According to the introduction, achieving "below the threshold" quantum error correction is a core goal long pursued by the global quantum computing field, and it is also one of the key milestones in verifying whether a quantum computing system can move from a prototype to practical application. This new technical route also provides a more advantageous solution for building a million-qubit quantum computer in the future.
Original: toutiao.com/article/7586837487851504154/
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