Continuous variable quantum key distribution network construction method, medium, network and nodes

Abstract

The invention provides a continuous variable quantum key distribution network construction method, a medium, a network and nodes. The method comprises the following steps: step A, constructing a network topology structure through symmetric arrangement, and realizing the logical connection among various network nodes in the network; and step B, according to the logical connection, for each networknode in the network, carrying out routing distribution on different wavelengths in an optical path for transmitting quantum signal light and local oscillator light. According to the continuous variable quantum key distribution network construction method provided by the invention, quantum keys of continuous variables are adopted, so that the key rate is high, and the amount of information transmitted in unit time is also relatively large, and a large network capacity can be provided when multiple users perform key sharing at the same time.

Description

technical field [0001] The present invention relates to the field of CVQKD continuous variable technology, in particular to a method for constructing a continuous variable quantum key distribution network of Gaussian modulation coherent state, especially CVQKD continuous variable technology. Background technique [0002] With the rapid development of information technology, information security has become the focus of attention. Although the traditional classical algorithm provides a relatively safe method at present, the security of the traditional classical algorithm is based on mathematical calculation security. With the rapid development of quantum computers, it may not become a secure encryption algorithm in the future. [0003] On the other hand, the amount of information people transmit is increasing, and more and more ports are transmitted, which makes the construction of the network necessary. With the rapid development of the current Internet, many ports can send ...

AI Technical Summary

Problems solved by technology

Although the traditional classical algorithm provides a relatively safe method at present, the security of the traditional classical algorithm is based on mathematical calculation security. With the rapid development of quantum computers, it may not become a secure encryption algorithm in the future.

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