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

A quantum key distribution and network node technology, applied in key distribution, can solve problems such as not being an encryption algorithm, achieve high key rate, improve network information security, and large network capacity

Inactive Publication Date: 2019-03-22
上海循态量子科技有限公司
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  • Claims
  • Application Information

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

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Embodiment Construction

[0039] 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.

[0040] 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 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/70H04L9/08
CPCH04B10/70H04L9/0852
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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