此次，研究团队突破非线性晶体主流路线，创新性提出金属蒸气四波混频新方案，实现148纳米连续波 输出，并将线宽降低近6个数量级，为真空紫外波段超稳激光技术奠定基础，抢先完成关键技术突破， 领先国际同类专项研究。 记者12日从清华大学获悉，该校副教授、北京量子信息科学研究院兼聘研究员丁世谦团队攻克了核光钟 研制的"最后一个核心瓶颈"——他们在连续波真空紫外光源方面取得重大突破，成功研制出148纳米连 续波超窄线宽激光光源，首次将超稳激光技术拓展至真空紫外波段。这一突破补齐了核光钟的关键技术 短板，为精密测量领域发展开辟新路径，彰显了我国在量子科技与基础研究领域的领先实力。相关成果 当日发表于国际期刊《自然》。 该成果应用价值显著，除支撑核光钟研究外，还可作为通用平台服务原子光钟、量子信息、凝聚态谱学 等前沿领域，支撑自主导航、深空探测、高精度地质与引力探测等应用，并有望实现半导体真空紫外计 量与高端测试装备自主可控。 时间计量是基础科学的核心领域。当前，原子光钟虽精度极高，但依赖原子外层电子跃迁，易受电磁干 扰，仅能在实验室环境中运行。而核光钟通过真空紫外激光诱导原子核跃迁，具备更高精度与强抗干扰 能力，且可实现 ...

Core Insights - Researchers from the University of Trieste and the National Research Council's National Institute of Optics have developed a new ultra-fast, low-loss single-atom detection method that significantly enhances single-atom imaging capabilities [1][3] Group 1: Methodology and Innovation - The new method combines intense microsecond fluorescence pulses with rapid re-cooling, achieving clear single-atom imaging within a few microseconds while retaining over 99.5% of atoms in optical traps for repeated use [1][3] - Unlike traditional binary detection methods, this approach allows for the differentiation and counting of multiple atoms within a single "optical tweezer" without significant imaging blur, enabling precise in-situ measurements of atomic numbers [3] Group 2: Implications and Applications - This advancement is crucial for the scalable development of neutral atom quantum computing, enhancing the precision of next-generation atomic clocks, and facilitating complex many-body quantum simulations [3][4] - The research team successfully achieved single-atom imaging of the fermionic isotope Ytterbium-173, which has six internal ground state levels, laying the groundwork for quantum circuits based on "quantum multi-level" rather than traditional qubits, potentially improving quantum information storage and processing efficiency [3]

Core Insights - The total bid amount for coordinate measuring machines (CMM) in November 2025 reached 56.495 million yuan, with Hexagon leading the market, and over 60% of purchases coming from universities, indicating a strong demand in the aerospace sector as the main driver in industrial procurement [1][3]. Market Overview - In November 2025, there were 51 published bid announcements related to CMMs, with a total bid amount of 56.495 million yuan and 56 units of CMMs awarded [3]. - Hexagon dominated the market with a significant lead in the number of bids, reflecting its strong recognition and stable demand in the domestic measurement market [3]. - Other brands like Zeiss, Skan, Zhongtu Instruments, and Xi'an Edwards showed a more balanced distribution of bid numbers, indicating a diverse and active market [3]. Brand Competition - Imported brands accounted for 63% of the bid numbers, while domestic brands made up 37%, showcasing the competitive presence of domestic brands, especially in small to medium-sized projects [5]. - In terms of bid amounts, imported brands dominated with a 75% share, totaling 28.498 million yuan, while domestic brands accounted for 25%, totaling 9.4228 million yuan [7]. Procurement Analysis - Universities represented the largest share of procurement at 60%, highlighting their ongoing investment in precision measurement talent and research platforms [9]. - Industrial enterprises accounted for 24% of the procurement, primarily in the automotive, aerospace, and precision manufacturing sectors, where CMMs play a critical role in quality control and smart manufacturing [9]. Industrial Application Distribution - The aerospace sector was the leading application area, accounting for 65% of the procurement, reflecting stringent requirements for measurement accuracy and equipment reliability [12]. - The automotive industry followed with a 25% share, emphasizing the importance of high-precision measurement in vehicle and component manufacturing [12]. - The machinery and equipment manufacturing sector accounted for 10%, demonstrating the broad applicability of CMMs in enhancing quality and efficiency in traditional industries [12]. Notable Models - Hexagon's Innova S 08.10.06 model led with 10 units awarded at an average price of 1.061 million yuan, while Zeiss's models had higher average prices, indicating a premium positioning in the market [14].

Core Viewpoint - The article highlights the critical role of precision measurement in the aviation manufacturing supply chain, emphasizing the urgency and teamwork required to meet stringent delivery deadlines for essential components like heat exchangers [1][6]. Group 1: Collaborative Response - The heat exchanger is large and complex, making it challenging for a single operator to handle safely and effectively [2]. - The measurement team demonstrated efficient collaboration, with experienced members quickly forming pairs to ensure safe handling and precise positioning of the component [2][5]. - Each successful operation reflects the team's commitment to completing the task, showcasing their determination despite physical challenges [2]. Group 2: Time-Sensitive Precision - The timeline for the measurement task was extremely tight, with only a few days allocated for complex programming, precise measurement, and data analysis [3]. - The intricate design of the heat exchanger required careful planning of measurement paths to avoid interference and ensure data accuracy [3][4]. - Team members willingly extended their working hours to meet the demanding schedule, highlighting their dedication to the project [3]. Group 3: Overcoming Challenges - The heat exchanger's heavy metal structure could undergo subtle deformations due to slight temperature changes, posing a risk to measurement accuracy [4]. - Experienced engineers optimized measurement strategies to minimize clamping stress and reduce exposure time, ensuring reliable data collection [4]. - Advanced software was utilized for rigorous data compensation and analysis, reinforcing the reliability of the measurements [4]. Group 4: Team Foundation for Success - The success of the measurement task was a collective effort, showcasing the spirit of teamwork throughout the process [5]. - The team leader coordinated resources and ensured seamless workflow, while senior members provided guidance to younger staff [5]. - A shared goal fostered a strong sense of collaboration, enhancing the overall effectiveness of the team [5]. Group 5: Commitment to Precision - After several days of intense work, the measurement team successfully captured all critical dimensions of the heat exchanger, delivering reliable data [6]. - The timely issuance of the inspection report marked not just the completion of a task but also a testament to the team's professionalism and collaborative spirit [7]. - The article concludes by emphasizing the team's role as the "eyes" of production, ensuring product quality and contributing significantly to the company's development [7].