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A quantum network system and method based on plug-and-play MDI-QKD

A network system, plug-and-play technology, applied in quantum network system, the field of quantum network system based on plug-and-play MDI-QKD, can solve the problems of low node communication processing burden and complex central node, achieve simple configuration, Compensate for the effect of polarization drift

Active Publication Date: 2018-12-21
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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AI Technical Summary

Problems solved by technology

Therefore, the central node is quite complex, and the communication processing burden of each node is very small, only need to meet the simple communication requirements of the link

Method used

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  • A quantum network system and method based on plug-and-play MDI-QKD
  • A quantum network system and method based on plug-and-play MDI-QKD
  • A quantum network system and method based on plug-and-play MDI-QKD

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Embodiment Construction

[0041] A quantum network system based on plug-and-play MDI-QKD, such as figure 1As shown, it includes a server and a client connected to the server. The server includes a quantum switch, a Bell state measurement device and a switch assembly. In this embodiment, the switch assembly is an optical switch; the optical switch and the Bell state measurement device (BSM) are both Connect to the quantum switch through a polarization beam splitter (PBS);

[0042] The quantum switch adopts two separate layers in the design structure, including the control layer on the upper layer and the transmission layer on the lower layer. The control layer realizes bidirectional connection with the transmission layer module through the optical cross-connect network.

[0043] The control layer is composed of switching control modules, which are used to realize call connection control between multiple users, establish, maintain and tear down quantum channel links, and dynamically allocate network reso...

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Abstract

The present invention discloses a quantum network system based on plug-and-play MDI-QKD. The quantum network system comprises a server and a user terminal connected with the server. The server comprises a quantum switch, a Bell state measuring device and a switch module. The switch module and the Bell state measuring device are connected with the quantum switch through the polarization beam splitter. The client includes a plurality of Alice nodes; the quantum switch comprises a control layer and a transport layer. The transport layer comprises a quantum transmission link and an optical cross-connection network bidirectionally connected with the quantum transmission link. The control layer is located in the upper layer, the transport layer is located in the lower layer, and the control layer is bidirectionally connected with the transport layer module through the optical cross-connect network. The invention has the characteristics of simple configuration of the user node in the network,improves the security of the star topology network and increases the MDI-QKDlegal communication user.

Description

technical field [0001] The invention relates to a quantum network system and method, in particular to a quantum network system and method based on plug-and-play MDI-QKD, and belongs to the cross-technical field of classical communication and quantum communication. Background technique [0002] With the widespread popularization of the Internet, the information transmission between human beings has reached an unprecedented quantity and frequency, and various private information is increasingly exposed on the Internet. Therefore, the human demand for confidential communication has also reached an unprecedented height. . At present, the quantum key distribution system based on quantum physics theory has been able to solve the security problem of point-to-point communication, but the point-to-point communication method is still limited in terms of communication distance and communication rate. [0003] Establishing a quantum network based on multiple communication links and int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04B10/70H04B10/54H04B10/556
CPCH04B10/541H04B10/5561H04B10/70H04L9/0858
Inventor 高中玲赵生妹
Owner NANJING UNIV OF POSTS & TELECOMM
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