As a new subject combining quantum physics and information technology, quantum information involves many fields, such as quantum superposition and interference, quantum teleportation, quantum key distribution, precision measurement and so on.Based on the patent data collected in patsnap, this paper analyzes the innovation in the field of global quantum information technology.The results show that the papers in the field of quantum information are a comprehensive cluster of quantum computing, quantum communication and quantum measurement; The global quantum information theory has experienced a long period of development.Quantum computing has become a research hotspot from 2010 to 2019, and its advantages have been reflected; The life cycle of quantum computing is in a growing period and is the most perfect; The United States leads the world in quantum computing research, and China is the most mature in quantum communication research; Beijing, Shanghai, Jiangsu and Guangdong are the key provinces of quantum information theory patent application in China, and universities or research institutions are the key patent applicants.
As a new subject combining quantum physics and information technology, quantum information involves many fields, such as quantum superposition and interference, quantum teleportation, quantum key distribution, precision measurement and so on.Based on the patent data collected in patsnap, this paper analyzes the innovation in the field of global quantum information technology.The results show that the papers in the field of quantum information are a comprehensive cluster of quantum computing, quantum communication and quantum measurement; The global quantum information theory has experienced a long period of development.Quantum computing has become a research hotspot from 2010 to 2019, and its advantages have been reflected; The life cycle of quantum computing is in a growing period and is the most perfect; The United States leads the world in quantum computing research, and China is the most mature in quantum communication research; Beijing, Shanghai, Jiangsu and Guangdong are the key provinces of quantum information theory patent application in China, and universities or research institutions are the key patent applicants.
Quantum technologies attracted much attention for their disruptive potential in last two decades.The article analyzes the worldwide patent landscape for quantum technologies based on data extracted from Derwent Innovation and Web of Science.The quantum technologies were grouped into three distinct technology areas of quantum computing, quantum communication and quantum sensing, to demonstrate detailed development and trends respectively.It shows that quantum technology is a highly competitive research field, and United States, China and Japan are the most prominent countries, in particular China made a great progress in recent years.United States has a significant advantage in the field of quantum computing, which is the most promising field, meanwhile China has a significant advantage in the field of quantum communication and succeeds in launching a quantum satellite.
In the early decades of the 20th century, the inception of quantum mechanics catalyzed the first quantum revolution, resulting in groundbreaking technological advances, such as nuclear energy, semiconductors, lasers, nuclear magnetic resonance, superconductivity, and global satellite positioning systems. These innovations have promoted significant progress in material civilization, fundamentally changed the way of life and societal landscape of humanity. Since the 1990s, quantum control technology has made significant strides forward, ushering in a rapid evolution of quantum technologies, notably exemplified by quantum information science. This encompasses domains such as quantum communication, quantum computing, and quantum precision measurement, offering paradigm-shifting solutions for enhancing information transmission security, accelerating computational speed, and elevating measurement precision. These advances hold the potential to provide crucial underpinning for national security and the high-quality development of the national economy. The swift progression of quantum information technology heralds the advent of the second quantum revolution. Following nearly three decades of concerted efforts, China’s quantum information technology field as a whole has achieved a leap. Specifically, China presently assumes a prominent international role in both the research and practical application of quantum communication, leading the global domain in quantum computing, and achieving international preeminence or advanced standing across various facets of quantum precision measurement. Presently, it is imperative to conduct a comprehensive assessment of the developmental priorities in the realm of quantum information in China for the forthcoming 5 to 10 years, in alignment with national strategic priorities and the evolving landscape of international competition. This will enable the proactive establishment of next-generation information technology systems that are secure, efficient, autonomous, and controllable.
随着互联网信息技术日新月异的发展以及量子时代的不断迫近，各国对量子密码及量子通信领域研究的重视程度越来越高。量子密码专利数据可以很好地反映一个国家量子密码领域的进展与成果，进而揭示国家相关的科技实力和国防力量。本文分别从专利申请时间、专利申请机构、国际专利分类表(IPC分类)三方面切入，对2000年到2017年全球四大主要量子研发地区美国、欧盟、日本和中国的专利申请情况进行详细的分析研究，归纳各国量子密码领域的研究成果并预测各国研究热点趋势。这不仅为分析国家的科技实力提供了直观详实的数据支撑，而且在全球量子科技发展的深层次探索和国家的量子战略规划等方面具有重要的参考价值。 With the rapid development of Internet based on information technology and the approach of the quantum age, countries pay more and more attention to the research of quantum cryptography and quantum communication. The quantum cryptography patent data can well reflect the pro- gress and achievement in quantum cryptography field of a country, which reveals the relevant scientific and technological strength and national defense strength of a country. This paper makes a detailed analysis of patent applications from 2000 to 2017 in four major quantum research and development regions in the world, namely the United States, the European Union, Japan and China. The analysis is carried out from three aspects of patent application time, patent application organization and patent classification number. And then the research results in quantum cryptography field of the countries above are summarized and the research trends are predicted. These provide an intuitive and detailed data support for the analysis of a country’s scientific and technological strength. Moreover, it can be an important reference for further research on developments of global quantum technology and the national quantum strategic planning.
After nearly three decades of rapid development, the quantum information technology in the theoretical and technical studies has gained remarkable achievements. This review gives a brief introduction to the development of various hot research branches of quantum information technology, including quantum cryptography, quantum communication, quantum computing, quantum simulation, quantum metrology, and fundamental theory of quantum information. In addition, this review also discusses various physical systems which have been well applied in the quantum information technology, such as atomic, molecular and optical physics, different branches in solid state physics (superconducting Josephson Junction system, semiconductor quantum dots, Nitrogen-vacancy color centers in diamond), trapped ions, and nuclear magnetic resonance system. With the investigation and accumulation of quantum information technology, the ability to control microscopic world has been significantly improved. Quantum cryptography has been close to the practical application and the long-distance quantum communication has overcome the practical obstacles in principle. Quantum simulation is close to the limit of the classical computer. Also, quantum metrology has gained rapid development. This review not only shows the situation of the international development of quantum information technology, but also highlights the achievements of China in recent years. These achievements demonstrate that China is an indispensable force in the worldwide quantum information community.
The rapid development of quantum information has brought new opportunities and challenges to modern information technologies.As one of the popular research directions in the field of quantum information, quantum networks aim to utilize the fundamental properties of quantum mechanics to achieve long-distance (secure) communications or provide computational capabilities superior to classical computing networks through distributed computing.The study of quantum networks holds great significance in advancing the practicality of quantum information.To gain a comprehensive understanding of the development trajectory of quantum networks, this study categorizes quantum networks into three types: quantum cryptography, quantum cloud computing, and quantum teleportation networks, based on different application scenarios and technical approaches.It provides comprehensive reviews of both domestic and international research progress and the challenges faced in each aspect.Furthermore, in conjunction with the practical implementation of quantum networks, the key technologies that need to be overcome in the development of quantum network systems, involving link establishment, information transmission, networking protocols, and physical hardware, are summarized.Overall, the development of quantum networks is still in the primary stage.At this stage, actively addressing challenges and seizing opportunities are of great significance to enhance the technological prowess of China.Therefore, to promote the development of 收稿日期：2023-10-11；修回日期：2023-10-30 通讯作者： * 高飞，网络与交换技术国家重点实验室(北京邮电大学)教授，研究方向为量子密码和量子算法；E-mail:
This paper summarizes systematically the basic situation of EU quantum communication technology in terms of the policy,planning,quantum communication networks and technology development process.Based on patent analysis and literature review,this paper analyzes in depth quantum communication interms of the EU patent applications,patent applicants and key technologies by means of qualitative and quantitative analysis. Finally,it forecasts the future development trends of the EU quantum communication technology.