【Abstract】 As one of the key technologies for next-generation wireless communications, the security issues faced by terahertz communications have attracted increasing attention. QNSC technology has the advantages of flexible structure and support for integration with existing networks. It has great potential in realizing large-capacity and high-speed wireless secure communications. Starting from the threats such as eavesdropping and interference faced by terahertz communication links, the basic principles of QNSC technology were elaborated and the seamless integration technology of QNSC and photonic terahertz communication was introduced. Finally, the experiment verified that the net rate reached 16 Gbit/s. Terahertz secure wireless transmission.
【Key words】 Quantum noise stream encryption; photonic terahertz communication; secure communication
0 Preface
With the explosive growth in demand for wireless data transmission rates, photonic terahertz (THz, Terahertz) communication is considered to be able to greatly promote the development of data transmission rates toward Tbit/s and is one of the key technologies for the next generation of mobile communication technology. Terahertz waves have the characteristics of high frequency, short wavelength, and narrow beam. During the space transmission process, the impact of diffraction on the signal is reduced, making the signal transmission have good directivity. The energy of the terahertz signal is mainly concentrated in areas with strong directivity. On the communication link, it greatly increases the difficulty for illegal eavesdroppers to eavesdrop on terahertz signals [1]. Therefore, terahertz waves are widely considered to have broad application prospects in the field of secure and secure communications. However, research on terahertz secure communication technology in recent years has found that terahertz communication still faces security issues such as eavesdropping and attacks on information interaction [2]. Under the current development trend of ultra-large-scale computers, the limitations of secure communication technology combined with high computational complexity encryption algorithms have become increasingly obvious. Physical layer secure transmission technology combined with physical complexity has become an important technical channel to achieve terahertz secure communication. This article will summarize and analyze the current security threats faced by terahertz links, focusing on an emerging optical network physical layer security communication technology - Quantum Noise Stream Cipher (QNSC, Quantum Noise Stream Cipher), and elaborate on the details of quantum noise stream encryption. Research status and basic principles, outline the seamless integration technology of quantum noise flow encryption and photon terahertz communication, and propose a photon terahertz security based on quantum noise flow encryption