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

A quantum key distribution and network technology, which is applied in the field of star-shaped continuous variable quantum key distribution network, can solve problems such as not being an encryption algorithm, achieve large network capacity, and improve network information security.

Active Publication Date: 2021-10-01
上海循态量子科技有限公司
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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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  • Star continuous variable quantum key distribution network and its method and medium
  • Star continuous variable quantum key distribution network and its method and medium

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] The invention provides a system network construction method based on CVQKD. Because the amount of information in the network is getting bigger and bigger, people's requirements for the information security of the network are getting higher and higher at the same time, and the CVQKD system network can meet the above two conditions at the same time, so it becomes the subject of our research. First of all, the key rate of CVQKD is very high, which can provide high information transmission rate and n...

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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...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2575H04B10/50H04B10/572H04B10/70H04L9/08
CPCH04B10/25754H04B10/503H04B10/572H04B10/70H04L9/085H04L9/0852
Inventor 齐源渊黄鹏汪超
Owner 上海循态量子科技有限公司
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