Quantum communication system integrating receiving and transmitting

Abstract

The invention discloses a quantum communication system integrating receiving and transmitting, which utilizes a bore diameter dividing way to realize the function of integrating the receiving and transmitting of a quantum and is suitable for the field of free space quantum communication and optical communication. An optical terminal is composed of a primary telescope, a tracing reflecting mirror, a tracing light and quantum light color separation filter, a tracing module, a quantum receiving-transmitting pore diameter separation reflecting mirror, a quantum receiving processing unit and a quantum transmitting unit, wherein the tracing module controls the change of the direction of the tracing reflecting mirror through tracing the change of an imaging light spot position of lights, so as to guarantee the high-precision alignment of a transmitting end and a receiving end; and the function of integrating the receiving and transmitting of the quantum is realized through the pore diameter separation reflecting mirror, thus the design requirement for integrating the receiving and transmitting of the quantum is met.

Description

technical field [0001] The invention relates to the technical fields of quantum communication and optical communication, in particular to a quantum communication system compatible with receiving and transmitting quantum optical signals. Background technique [0002] Secure communication is a transmission method that allows both parties to communicate to exchange information in a top-secret state. Many countries attach great importance to the research of secure communication. In today's society, confidential communication is already the guarantee of information exchange among governments, banks, companies, and private protection. With the promotion of the Internet and e-commerce, the security of the confidential system is particularly important. The rapid development of computers has made the means of deciphering codes more and more sophisticated, and classical cryptography has increasingly shown its limitations. Starting from the uncertainty principle of quantum mechanics a...

AI Technical Summary

Problems solved by technology

However, due to the limitations of optical fiber materials, the loss and decoherence effects of optical fibers cannot be avoided. At present, the performance of low-loss optical fibers has approached the theoretical limit. It has become very difficult to use optical fibers to establish quantum channels at two points more than 100 kilometers apart.

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