A Review of Quantum Key Distribution Technology and Its Applications
Jingyi Chen · Theoretical and Natural Science · 2025
With the rapid development of information technology, the traditional encryption technology has gradually become fragile. Quantum key distribution (QKD) is based on the principle of quantum mechanics and has absolute security in theory, so it has attracted much attention. This paper emphasizes the importance of QKD in the field of information security. After briefly introducing the principle and practical application process of QKD technology, the differences and application scenarios of classical protocols are compared and analyzed. The applications of QKD in the fields of finance, energy and communication are summarized. In addition, it explores the potential future applications of QKD in healthcare and smart cities, providing valuable insights into the study of QKD technology and its applications.