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
CN109067518AActive Publication Date: 2018-12-21NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF POSTS & TELECOMM
Publication Date
2018-12-21

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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.
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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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