WORLD SCI-TECH R&D ›› 2022, Vol. 44 ›› Issue (1): 69-80.doi: 10.16507/j.issn.1006-6055.2022.01.002

Special Issue: 量子科技

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International Quantum Cryptography Patent Development Trend and Hot Spot Analysis

LI Feifan   

  1. Library of Beijing University of Technology, Beijing 100124, China
  • Online:2022-02-25 Published:2022-03-01

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Abstract:

With the rapid development of Internet information technology and the approaching of the quantum era, countries pay more and more attention to the research of quantum cryptography. Quantum cryptography patent data can well reflect the progress and achievements of a country in the field of quantum cryptography, and then reveal the country's scientific and technological strength and national defense capabilities. In this paper, the patent of quantum cryptography technology is deeply analyzed in order to reveal the research and development status and hotspots, technology direction layout and competition pattern. The results show that the number of patent applications for quantum cryptography technology has increased rapidly since 2011, and is still in a period of rapid growth; China is the main front of quantum cryptography research in the world, followed by the United States and Japan; The top three applicants in the world are QuantumCTek Co., Ltd, American MagiQ technology company and Japan Electric Co., Ltd. Key distribution and photon quantum communication are the hot spots in the field of global quantum cryptography; The main technical topics are quantum key distribution, quantum entanglement, quantum secure direct communication and quantum secret sharing. The analysis results can provide reference for quantum cryptography research and suggestions for the intellectual property protection of quantum cryptography in China.

Key words: Quantum Cryptography, Patented Technology, Development Trend, R&D Hotspot