Entire space-time quantum and laser communication system

• Main Authors: ZHANG WENRUI, WANG LIUJUN, YANG WENHAI, GUO JINGZHONG, SONG XUERUI, DIAO WENTING, CAI CHUNXIAO
• Format: Patent
• Language: Chinese; English
• Published: 04.01.2019
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MULTIPLEX COMMUNICATION; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses an entire space-time quantum and laser communication system. First-order wavelength division multiplexing of n channels of quantum signals and first-order wavelength division multiplexing of n channels of classical laser signals are realized through a dense wavelength division multiplexing device. Finally, second-order wavelength division multiplexing of quantum signals, classical signals and clock signals (synchronous optical signals) is realized through a sparse wavelength division multiplexing device, and the problem about fast simultaneous transmission of classicallaser communication and quantum communication in different channels in a free space is solved. The communication capacity of a free space in the quantum key distribution process is improved. The multiplexing of classical channels and quantum channels is realized. The capacity of channels is expanded. The transmission rate is improved. Entire space-time large-capacity quantum and laser communication is realized. 本发明公开了种全时空