中性原子体系无缺陷原子阵列

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上海量子实验刷新世界纪录 对量子计算机研发有何意义?
Di Yi Cai Jing· 2025-08-14 14:47
Core Insights - The recent experiment by Chinese scientists has established a key technological foundation for the realization of general quantum computers, despite the fact that such computers have not yet been developed [1][2] - The research team has set a new world record for defect-free atomic arrays in neutral atom systems, assembling an array of 2024 atoms, which marks a significant leap in computational efficiency and experimental feasibility in the field of atomic quantum physics [1][5] Group 1: Significance of the Results - The "neutral atom" approach, although a latecomer compared to superconducting and photonic technologies, is seen as a crucial breakthrough for China's quantum industry [2] - Neutral atom systems are recognized for their scalability, high fidelity quantum gates, high parallelism, and arbitrary connectivity, making them a promising platform for quantum computing and simulation [2][6] Group 2: Technological Innovations - The research team utilized optical tweezers to trap neutral atoms and employed rearrangement techniques to convert a randomly filled atomic array into a defect-free array, enabling quantum logic gate operations [2][5] - The system achieved a single qubit gate fidelity of 99.97%, a two-qubit gate fidelity of 99.5%, and a detection fidelity of 99.92%, matching the highest international standards [5][7] Group 3: Future Prospects - The experiment is expected to accelerate the development of general quantum computers, with hopes that the research will become a core component of future quantum computing systems [6][8] - The Shanghai government is actively promoting the quantum computing sector, planning to establish a quantum computing industrial cluster to attract top talent and innovative companies [8]