Star continuous variable quantum key distribution network and its method and medium

Abstract

The present invention provides a star-shaped continuous variable quantum key distribution network and its method and medium, comprising: step A: determining the network topology according to the number of network endpoints of the network, and selecting the adjustable wavelength of the laser source according to the network topology, To realize the logical connection among the network nodes in the network; Step B: establish the actual connection and allocate the wavelength according to the logical connection, which is used for the preparation and transmission of quantum signal light and local oscillator light. The quantum secret communication based on the quantum mechanics of the present invention has physical unconditional safety, can not only meet people's requirements for information volume, but also meet the information security of the network.

Description

technical field [0001] The invention relates to the field of network routing of quantum key distribution, in particular to a star-shaped continuous variable quantum key distribution network and its method and medium. In particular, the star-shaped continuous variable quantum key distribution network based on arrayed waveguide gratings uses adjustable laser sources to generate light of different wavelengths, and different wavelengths correspond to different channels, and uses arrayed waveguide gratings to select wavelengths, that is, to select channels for transmission , and a CVQKD network routing technology in which the local oscillator light and the signal light are transmitted in channels corresponding to the same wavelength. . 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...

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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