量子互联网

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重大突破,美国高校首次用商用光纤实现量子传输,或迎互联网革命
Sou Hu Cai Jing· 2025-09-16 13:44
Core Insights - The University of Pennsylvania team achieved a groundbreaking advancement in quantum communication, successfully transmitting quantum signals over commercial fiber networks using standard internet IP protocols [1][3][6] - The key innovation is the compact "Q chip," which coordinates quantum and classical information, ensuring compatibility with existing network protocols and enabling automatic error correction with a transmission fidelity exceeding 97% [3][4][9] Technical Breakthrough - The testing was conducted on a one-kilometer commercial fiber network at Verizon's campus, demonstrating stable and efficient performance [1][3] - The "Q chip" is considered a foundational element for the future "quantum internet," potentially leading to transformative changes similar to the advent of the internet [3][6][14] Challenges and Solutions - Quantum networks face challenges due to the delicate nature of quantum particles, which lose their special states upon measurement [7][11] - The "Q chip" addresses these challenges by coordinating conventional light signals with quantum particles, allowing for effective communication without damaging the quantum information [7][9] Future Prospects - Currently, the network consists of a single server and node connected by one kilometer of Verizon fiber, but expanding the network is feasible by producing more chips [11][13] - A significant obstacle remains in transmitting quantum signals without disrupting entanglement, although some teams have managed to transmit "quantum keys" for secure communication [11][13]
国盾量子(688027.SH):对量子互联网等前沿科研领域暂不涉及
Ge Long Hui· 2025-09-11 10:05
(原标题:国盾量子(688027.SH):对量子互联网等前沿科研领域暂不涉及) 格隆汇9月11日丨国盾量子(688027.SH)在投资者互动平台表示,目前国盾量子等企业对于量子经典融合 等方面的关注主要在QKD(如波分复用、量子通信光芯片)等产业方向,对量子互联网等前沿科研领 域暂不涉及。 ...
国盾量子:对量子互联网等前沿科研领域暂不涉及
Ge Long Hui· 2025-09-11 09:47
格隆汇9月11日丨国盾量子(688027.SH)在投资者互动平台表示,目前国盾量子等企业对于量子经典融合 等方面的关注主要在QKD(如波分复用、量子通信光芯片)等产业方向,对量子互联网等前沿科研领 域暂不涉及。 ...
长春:降低新建商品住房贷款首付款比例|首席资讯日报
首席商业评论· 2025-08-30 03:50
Group 1 - The recruitment frenzy at Pang Dong Lai has led to a surge in interview training services, with an entry rate claimed to be 80% [2] - The summer box office for movies has surpassed 11.5 billion yuan as of August 29, 2025 [3] - Credit Suisse has raised the target price for Nongfu Spring to 55 HKD, anticipating accelerated revenue growth in the second half of the year due to low base effects [4] Group 2 - Changchun has proposed to lower the down payment ratio for new commercial housing loans from 20% to 15% for certain homebuyers [5] - Fengmao Co. has established a robotics division and is supplying transmission systems for industrial robots, indicating a focus on the robotics sector [6][7] - Bosideng has denied media reports regarding a potential acquisition of Canada Goose, clarifying that such information is untrue [8] Group 3 - Commonwealth Fusion Systems has secured $863 million in funding, led by Nvidia and Google, to advance its fusion energy demonstration system [9][10] - Dell reported a revenue of $29.8 billion for Q2 of fiscal year 2026, a 19% year-over-year increase, with AI solutions shipments exceeding the previous year's total [11] - Researchers at the University of Pennsylvania have successfully transmitted quantum signals over commercial fiber networks using current internet protocols, marking a significant step towards a quantum internet [12] Group 4 - SpaceX launched 28 Starlink satellites, bringing the total number of satellites sent into orbit since 2019 to over 8,000 [13] - Li Xiang, CEO of Li Auto, announced plans to accelerate the iteration speed of technology platforms and product updates to regain market competitiveness [14]
量子信号首次用互联网协议传输
Ke Ji Ri Bao· 2025-08-29 00:29
Core Insights - A team of engineers from the University of Pennsylvania has successfully transitioned quantum network technology from the laboratory to practical application, marking a significant step towards building a future quantum internet [1] - The core achievement is a micro "Q chip" that coordinates the transmission of quantum information with classical data, allowing quantum signals to communicate using the language of modern internet protocols [1] Group 1 - The Q chip has been demonstrated to send quantum signals over commercial fiber networks while automatically correcting noise during transmission, packaging quantum and classical data into standard internet data packets [1] - The integration of the Q chip allows for the management of quantum signals on commercial networks using the same protocols as classical internet, indicating a move towards larger-scale experiments and practical quantum internet applications [1][2] - The challenge of expanding quantum signals has been addressed by the development of the Q chip, which coordinates a mixed information flow of classical signals and quantum particles [1] Group 2 - The mechanism of the Q chip is likened to railway transport, where classical signals act as the locomotive, guiding and navigating, while quantum information is akin to sealed containers that are securely delivered [2] - The Q chip is made from silicon-based materials and manufactured using established semiconductor processes, providing a realistic foundation for large-scale production and widespread application of the technology [2] - Currently, the network connects two buildings with one server and one node, utilizing approximately one kilometer of fiber, and can be expanded by producing more chips to integrate with existing urban fiber networks [2]
2025量子互联网展望:探索算网协同新架构的白皮书深度解读
Sou Hu Cai Jing· 2025-08-26 04:27
Core Insights - A comprehensive white paper titled "2025 Quantum Internet and Computing Network Collaborative Architecture" has garnered significant attention, detailing the foundational framework of quantum information technology and its applications [1][2]. Quantum Information Technology - The report outlines three primary application areas of quantum information technology: quantum communication, quantum computing, and quantum precision measurement [1]. - In quantum communication, technologies such as Quantum Key Distribution (QKD), quantum teleportation, and Quantum Secure Direct Communication (QSDC) are elaborated [1]. - The quantum computing section reviews the development history and existing physical platforms like superconductors and ion traps, along with key quantum algorithms such as Shor's and Grover's algorithms [1]. - Quantum precision measurement is highlighted for its ability to surpass standard quantum limits, with applications in quantum clock networks and long-baseline telescopes [1]. Quantum Internet Architecture - The report discusses the multi-stage development of the quantum internet, including trusted relay networks and the evolution of quantum relays to the fourth generation [2]. - It analyzes various protocol stacks for the quantum internet, including the Van Meter and Wehner five-layer models, and introduces packet-switching technology for data transmission [2]. - An initial resource-scarce operational model for the quantum internet is proposed, featuring a centralized control system with user and main networks [2]. Quantum Computing Network Collaboration - The report focuses on three collaborative trends: quantum cloud computing, integration of quantum and supercomputing, and distributed quantum computing [3]. - It emphasizes the necessity of computing network collaboration to meet the unique demands of quantum applications [3]. - Key research directions include resource abstraction and modeling, quantum business modeling, and scheduling framework modeling [3].
2025年未来网络发展大会:量子互联网与算网协同体系架构白皮书
Sou Hu Cai Jing· 2025-08-25 08:29
Quantum Internet Overview - The white paper outlines the technical foundation, architecture design, key technologies, and the synergy between quantum computing and networking, providing a reference for the engineering realization of quantum internet [1][24]. - Quantum internet is defined as a network connecting quantum nodes to support applications that classical internet cannot achieve, currently in its early stages with immature hardware and software [4][24]. Quantum Information Technology Basics - Core concepts include quantum mechanics principles such as superposition, entanglement, quantum operations, and quantum measurement, which are essential for quantum computing and communication [1][2]. - Quantum state evolution follows the Schrödinger equation, providing theoretical support for quantum computing and communication [1]. Typical Quantum Applications - Quantum communication includes quantum key distribution (QKD), quantum teleportation, and quantum secure direct communication (QSDC), ensuring secure information transfer [2][51]. - Quantum computing utilizes quantum superposition for parallel computation, currently in the Noisy Intermediate-Scale Quantum (NISQ) stage, with key algorithms like Shor's and Grover's [2][65]. - Quantum precision measurement aims to surpass the standard quantum limit, with applications in global quantum clock networks and long-baseline telescopes [2]. Quantum Internet Architecture and Key Technologies - The architecture of quantum internet is still developing, with various stages proposed by researchers, including trusted relay and entanglement distribution [4]. - Quantum relay technology is categorized into four generations, addressing long-distance quantum signal attenuation [5][6]. Quantum Internet Protocol Stack - Different research teams propose varied protocol stacks, adapting classic internet architecture to quantum needs, with layers for physical, link, network, and application [7]. Initial Quantum Internet Operation Mode Design - A centralized control scheme is proposed for initial quantum devices, focusing on network layout and node types to manage limited resources effectively [9][10]. Quantum Application Protocol Examples - The BBM92 protocol for quantum key distribution involves a process of path selection, entanglement channel construction, and security checks to generate a secure key [12][13]. - Distributed quantum computing connects multiple quantum processors through entangled channels, overcoming limitations of single-chip systems [14]. Quantum Computing and Networking Synergy - The trend towards quantum cloud computing and integration with supercomputing highlights the need for resource modeling and scheduling frameworks to optimize quantum and classical resource allocation [15][16]. - The necessity for collaboration arises from high fidelity requirements and short coherence times in quantum applications, demanding precise communication timing [16]. Summary and Outlook - The current stage of quantum internet development faces challenges in practical quantum relay and data exchange technologies, with potential cost reductions through the reuse of classical internet infrastructure [18]. - Future directions include breakthroughs in quantum relay and error correction, as well as the development of a resource modeling and scheduling system to support large-scale quantum applications [19].
量子互联示范网来了!首期计划部署成都高新区
Sou Hu Cai Jing· 2025-06-16 20:54
Core Insights - The establishment of a quantum internet demonstration network in Chengdu aims to transition quantum technology from theoretical research to practical applications, supporting the future scalability of quantum internet systems [1][5][21] Group 1: Quantum Internet Overview - The quantum internet consists of three subnets: quantum computing network, quantum communication network, and quantum sensing network, leveraging quantum physics principles for enhanced information processing, transmission security, and precision [3] - Quantum communication networks can revolutionize information security by enabling direct transmission of classical information using quantum states and providing essential infrastructure for quantum computing and sensing networks [3][5] Group 2: Technological Developments - The launch of the world's first gallium nitride quantum light source chip represents a significant advancement in quantum information technology, enhancing the integration and reliability of quantum internet devices [6][9] - The demonstration network will utilize advanced technologies such as high-brightness entangled light sources and hollow-core fiber deployment to overcome key technical challenges [13] Group 3: Implementation Strategy - The quantum internet demonstration network will be built in phases, starting with multiple quantum nodes in Chengdu High-tech Zone, equipped with essential infrastructure for quantum business functionalities [11][12] - The network aims to facilitate collaborative transmission of classical and quantum signals, integrating with existing communication facilities [12] Group 4: Strategic Importance - The project is expected to drive local development of quantum internet components and systems, fostering an ecosystem for the quantum internet industry [15] - It will enhance Sichuan's influence in the national quantum information strategy and lay the groundwork for future quantum internet industry development [17] Group 5: Future Prospects - The establishment of the Quantum Internet Frontier Research Center aims to create a leading platform for quantum internet core device research and contribute to national strategic needs [18][19] - The center plans to develop a range of quantum internet applications, including quantum sensors and quantum computing technologies, to build a comprehensive quantum industry ecosystem [19]
汇聚网络空间蓬勃正能量 ——2025年中国网络文明大会侧记
Jing Ji Ri Bao· 2025-06-11 22:15
Group 1: Network Civilization Conference Insights - The 2025 China Network Civilization Conference emphasizes the role of the internet in promoting cultural innovation and prosperity, aiming to create a positive online environment that enhances citizens' sense of gain and happiness [1] - The conference highlights the importance of consolidating mainstream ideological discourse online and reforming governance mechanisms in cyberspace to promote socialist core values [1] Group 2: Legal Framework and Governance - The establishment of a comprehensive legal framework, including laws on cybersecurity, data security, and personal information protection, is crucial for maintaining order in cyberspace [2] - Experts stress the need for a balanced approach in legal design to ensure safety while fostering technological innovation, creating a stable legal environment for industry growth [2] Group 3: Collaborative Efforts in Network Civilization - Building a healthy and prosperous online environment requires collective efforts from various sectors, with experts suggesting that technology workers, especially in quantum information, have a significant role in safeguarding network civilization [3] - The vision for a "quantum internet" is presented as a means to create a safer and more inclusive online space, with ongoing innovation supported by national authorities [3] Group 4: Automotive Industry's Role - The automotive industry is urged to take responsibility in building a new network civilization ecosystem, focusing on data security and compliance as vehicles generate vast amounts of interaction data [4] - Companies like Chery Automobile are encouraged to innovate, self-regulate, and promote positive narratives about China to enhance the country's image globally [4] Group 5: Influence of Online Personalities - Online personalities are recognized for their potential to positively influence network civilization by disseminating legal knowledge and enhancing public safety awareness [5] - They are called upon to act as a bridge of understanding and trust among the public, especially during crises, promoting a rational and harmonious online environment [5] Group 6: Industry Initiatives for AI Development - The China Cybersecurity Association, along with over 60 internet companies, has launched an initiative to ensure the safe and reliable development of artificial intelligence, emphasizing legal compliance and ethical values [6] - The initiative aims to address new governance challenges posed by emerging technologies, advocating for international cooperation in tackling issues like cybercrime and data security [6] Group 7: Youth Engagement in Network Civilization - The scale of young internet users in China has reached 540 million, making them a vital force in promoting network civilization [7] - The "Youth Network Civilization Initiative" aims to engage young people as active participants and innovators in the online space, enhancing their digital literacy and contributing to a positive online environment [7]
全球首个氮化镓量子光源芯片发布
Zhong Guo Chan Ye Jing Ji Xin Xi Wang· 2025-05-19 21:51
Core Insights - The release of the world's first gallium nitride quantum light source chip marks a significant advancement for China in the field of quantum technology, providing essential hardware support for the development of quantum internet [1][2] - The chip, measuring only 0.14 square millimeters, achieves international advanced levels in key metrics such as emission range, brightness, and entanglement quality, demonstrating its potential despite its small size [1] - The chip overcomes technical challenges related to high-quality gallium nitride crystal film growth and scattering losses, expanding the output wavelength range from 25.6 nanometers to 100 nanometers, indicating potential for single-chip integration [1] Industry Implications - Quantum products, including the gallium nitride quantum light source chip, are expected to undergo multi-scenario technology validation by 2026, showcasing the chip's readiness for practical applications [2] - Gallium nitride's unique advantages in quantum light sources, such as high brightness and efficiency, position it well to meet the demands of quantum communication, enhancing information security to a quantum level for sensitive data transmission in sectors like finance and government [2] - The release of this chip not only represents a breakthrough for China but also offers new perspectives for global quantum technology development, with potential applications in artificial intelligence and biomedicine, addressing computational bottlenecks [2]