不过，DI-QKD的实验实现面临极为严苛的技术门槛，此前相关实验演示大多局限于数米至数百米 短距离范围。 基于可扩展量子中继技术，研究团队进一步实现了两个铷原子间的远距离高保真纠缠，并在此基础 上将设备无关量子密钥分发的距离突破百公里，较国际此前最好实验水平提升两个数量级以上。 潘建伟表示，上述突破是我国继"墨子号"量子卫星之后又一里程碑式成果，标志着基于量子纠缠的 光纤量子网络正在从理论构想走向现实可能，进一步扩大了我国在该领域的国际领先优势。 （原载于《科技日报》2026-02-09 01版） 记者8日从中国科学技术大学获悉，该校潘建伟院士团队与其他团队合作，在国际上首次构建出可 扩展量子中继的基本模块，并实现了单原子节点间的远距离高保真纠缠，在此基础上首次将器件无关量 子密钥分发（DI-QKD）的传输距离突破百公里，极大推进了该技术的实用化进程。两项成果分别于北 京时间2月3日和6日发表于国际学术期刊《自然》和《科学》。 光纤的固有损耗导致量子纠缠的传输效率随距离成指数衰减，量子中继方案是解决光纤传输损耗的 有效方案。然而，近30年来始终未能解决的一项重大技术难题是：纠缠的寿命远远短于产生纠缠所需的 时 ...

Core Insights - The research team led by Academician Pan Jianwei from the University of Science and Technology of China has achieved significant breakthroughs in quantum communication technology, specifically in scalable quantum repeaters and device-independent quantum key distribution (DI-QKD) [1][2] Group 1: Quantum Repeater Technology - The team has constructed the basic module for a scalable quantum repeater and achieved long-distance high-fidelity entanglement between single atomic nodes, overcoming a major technical challenge that has persisted for nearly 30 years [1] - The entanglement lifetime achieved is 550 milliseconds, which significantly exceeds the time required to establish entanglement (450 milliseconds), enabling effective connection of entanglements and making long-distance quantum networks feasible [1] Group 2: Device-Independent Quantum Key Distribution - The DI-QKD scheme allows for secure key distribution even when quantum devices are completely untrusted, enhancing the practicality and attack resistance of quantum key distribution [2] - The research team has successfully extended the transmission distance of DI-QKD to over 100 kilometers, improving upon the previous best experimental level by more than two orders of magnitude [2] - This achievement is considered a milestone in the field, following the success of the "Mozi" quantum satellite, and signifies a shift from theoretical concepts to practical possibilities in fiber-based quantum networks [2]

Core Insights - The research team from the University of Science and Technology of China has developed a scalable quantum relay basic module and achieved long-distance high-fidelity entanglement between single atomic nodes, marking a significant advancement in the practical application of quantum key distribution (DI-QKD) technology, with transmission distances exceeding 100 kilometers [1][2] Group 1: Quantum Relay Technology - The inherent loss of optical fibers leads to an exponential decay in the efficiency of quantum entanglement transmission over distance, making quantum relay schemes an effective solution to address fiber transmission losses [1] - A major technical challenge that has persisted for nearly 30 years is that the lifetime of entanglement is significantly shorter than the time required to generate it, hindering effective entanglement connection and scalability of quantum relays [1] - The research team has developed long-lifetime trapped ion quantum storage, high-efficiency ion-photon communication interfaces, and high-fidelity single-photon entanglement protocols, achieving a significant breakthrough with an entanglement lifetime of 550 milliseconds, surpassing the 450 milliseconds required for entanglement establishment [1] Group 2: Device-Independent Quantum Key Distribution - The traditional quantum secure communication schemes require precise calibration of device parameters to ensure real-world security, while the device-independent quantum key distribution (DI-QKD) scheme overcomes this limitation, ensuring key security even with completely untrusted quantum devices [2] - The implementation of DI-QKD has faced stringent technical barriers, with previous international experiments mostly limited to short distances of a few meters to hundreds of meters [2] - Utilizing scalable quantum relay technology, the research team successfully achieved long-distance high-fidelity entanglement between two rubidium atoms, breaking the DI-QKD distance barrier of 100 kilometers, improving upon the previous best international experimental level by over two orders of magnitude [2]

Group 1: Industry Overview - The food and beverage industry has received significant attention from institutions, with multiple brokerages maintaining a positive outlook on its future performance [2] - The food and beverage sector is characterized by "low base, low holdings, and low expectations," making it highly sensitive to positive signals, with any favorable changes in supply and demand potentially catalyzing stock price increases [2] - The white liquor sector is currently at a historical low valuation, and policy-driven recovery in consumer confidence is expected to drive valuation recovery [2] Group 2: Stock Performance - Since October, 45 stocks have had their ratings upgraded by institutions, with an average increase of 6.66%, and 14 stocks have seen cumulative gains exceeding 10% [2] - GuoDun Quantum has experienced the highest increase of 58.68% since October, attributed to successful verification of key technologies for quantum secure communication networks [2] - Artis has also seen a significant rise of 58.33%, driven by strong performance in its energy storage business, with a 32% year-on-year increase in large energy storage product shipments [3] Group 3: Company Financials - Yangguang Electric's revenue for the first three quarters reached 66.402 billion, a year-on-year increase of 32.95%, with net profit growing by 56.34% [3] - Several companies, including Jiantou Energy and Shanghai Jahwa, reported net profit growth exceeding 100% year-on-year for the first three quarters, with Jiantou Energy's net profit increasing by 231.79% [3][4] - Shanghai Jahwa's net profit for the first three quarters was 4.05 billion, reflecting a year-on-year growth of 149.1% [4] Group 4: Valuation Metrics - As of November 5, 12 stocks have a rolling price-to-earnings ratio below 20, with 4 stocks having a ratio below 10, including Ningbo Bank and China Life Insurance [4]

Core Points - The company is holding its third extraordinary general meeting of shareholders in 2025 to discuss important proposals, including signing a patent implementation license contract and revising the external investment management system [1][24]. Group 1: Meeting Details - The meeting is scheduled for July 31, 2025, at 15:00, located at the Keda Guandun Quantum Technology Park in Hefei, Anhui Province [7]. - Voting will be conducted through a combination of on-site and online methods, with specific time slots for online voting [7][3]. Group 2: Proposal on Patent License Agreement - The company plans to renew a patent implementation license agreement with the University of Science and Technology of China (USTC) and sign a new agreement due to business needs [5][10]. - The first contract involves a patent for an arbitrary waveform generation system and a proprietary technology for a low-latency synchronization device, with a license period of three years and a revenue-sharing model where 30% of net sales profit will be paid to USTC [6][10][12]. - The second contract includes three patents and one proprietary technology, with a two-year license period and a one-time entry fee of 200,000 yuan, along with a 50% share of net sales profit [17][18]. Group 3: Impact and Compliance - The transactions are considered normal business operations that will enhance the company's product matrix and market competitiveness without harming the interests of the company or its shareholders [22]. - The company emphasizes that these transactions will not significantly impact its independence or create major reliance on the related party [22].

Investment Rating - The report maintains an investment rating of "Outperform the Market - A" [6] Core Insights - Quantum technology is expected to bring disruptive innovations in computing power, driving demand for quantum secure communication and post-quantum cryptography [12] - Major advancements in quantum computing have been made by leading companies, indicating a competitive landscape in the industry [13][14] - The establishment of dedicated quantum research centers by companies like NVIDIA signifies a strategic shift towards integrating quantum computing with AI [15][16] Summary by Sections 1. Industry Insights - Quantum computing is based on quantum mechanics, utilizing quantum bits for processing, which offers unparalleled information capacity and parallel processing capabilities [12] - The emergence of quantum secure communication and post-quantum cryptography is a response to the potential threats posed by quantum computing to traditional encryption methods [12] 2. Chip Developments - Microsoft launched the Majorana 1 quantum chip, while Amazon introduced the Ocelot chip, which significantly reduces error correction overhead [13] - D-Wave's Advantage2™ system marks a pivotal shift from laboratory to enterprise-level applications, featuring over 4,400 qubits [13] - IBM's roadmap includes the release of a large-scale fault-tolerant quantum computer by 2029, expected to outperform current systems by 20,000 times [13] 3. Algorithmic Advancements - D-Wave demonstrated quantum superiority by solving a magnetic material simulation problem in 20 minutes, a task that would take traditional supercomputers nearly 1 million years [14] - Google's research indicates that a million noisy qubits could crack RSA-2048 encryption in a week, significantly shortening the traditional security period [14] 4. Industry Participation - NVIDIA's establishment of the Accelerated Quantum Research Center aims to integrate quantum hardware with AI supercomputing [15] - The CEO of NVIDIA has shifted his stance on quantum computing, predicting significant advancements in the coming years [16] 5. Market Performance - The computer industry index decreased by 2.25%, underperforming compared to major indices [17] - The report highlights the need to monitor long-term trends in AI, robotics, and self-controllable industries [21]

Core Insights - The article highlights the achievements of Pan Jianwei, a leading figure in China's quantum technology, who has spearheaded significant advancements in the field, including the development of quantum satellites and secure communication systems [1][6]. Group 1: Achievements in Quantum Technology - Pan Jianwei's team is developing the world's first medium-high orbit quantum satellite, which can establish quantum key distribution between distant locations, enhancing national information security [1]. - The successful launch of the world's first quantum science experimental satellite, "Mozi," in 2016 marked China's leadership in global quantum communication research [4]. - The completion of the quantum "Beijing-Shanghai Line" provides unconditional security for financial and governmental communications, establishing a "shield" for information security [6]. Group 2: Educational and Research Contributions - Pan Jianwei returned to China after studying in Europe, motivated to establish a world-class laboratory in quantum optics and information, reflecting a commitment to national scientific advancement [2][3]. - The return of overseas students, inspired by Pan Jianwei, contributed to the establishment of a robust quantum technology research environment in China [4][3]. - The focus on nurturing innovative talent is seen as essential for maintaining competitive advantage in the quantum technology sector [6][7]. Group 3: Future Directions - The team is currently working on the "Jiuzhang 4" and "Zuchongzhi 4" quantum computing prototypes, with plans to launch multiple quantum micro-nano satellites for practical applications [6]. - The ambition is to elevate China's quantum technology to compete with the United States and Europe, contributing to national technological self-reliance [7].