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Quantum key distribution and optical communication system co-fiber transmission method and device

A technology of quantum key distribution and optical communication system, applied in the field of communication, can solve the problems of QKD system signal impact, QKD transmission capability security key code rate degradation, common fiber transmission application impact, etc.

Active Publication Date: 2019-06-18
CHINA ACADEMY OF INFORMATION & COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The change of the strong optical signal in the optical communication system will have an impact on the QKD system signal transmitted by the co-fiber, resulting in the deterioration of the QKD transmission capability and the coding rate of the security key, which will seriously affect the application of the co-fiber transmission

Method used

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  • Quantum key distribution and optical communication system co-fiber transmission method and device
  • Quantum key distribution and optical communication system co-fiber transmission method and device
  • Quantum key distribution and optical communication system co-fiber transmission method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0051] see figure 1 , figure 1 It is a schematic diagram of the co-fiber transmission process of quantum key distribution and optical communication in Embodiment 1 of this application. The specific steps are:

[0052] Step 101, the control device receives the signal parameters of the optical communication system detected and sent by the co-fiber transmission system, and initializes the working modes of the QKD system and the co-fiber transmission system according to the received signal parameters of the optical communication system and the configured mapping relationship and working parameters.

[0053] The working mode and working parameter configuration of the co-fiber transmission system and the QKD system are centrally configured by the control equipment and completed simultaneously after the signal parameter detection of the optical communication system is completed.

[0054] Step 102, the control device monitors the signal parameters of the QKD system during the co-fi...

Embodiment 2

[0062] see figure 2 , figure 2 It is a schematic diagram of the co-fiber transmission process of quantum key distribution and optical communication in Embodiment 2 of the present application. The specific steps are:

[0063] In step 201, during the working process of the co-fiber transmission, the control device receives the signal parameters of the optical communication system monitored and sent by the co-fiber transmission system.

[0064] Step 202, when the control device determines that the change of the signal parameters of the optical communication system satisfies the preset conditions, reconfigure the work of the QKD system and the co-fiber transmission system according to the monitored signal parameters of the current optical communication system and the configured mapping relationship mode and operating parameters.

[0065] In this step, it is determined that the change of the signal parameter of the optical communication system satisfies the preset condition th...

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Abstract

The invention provides a quantum key distribution and optical communication system common fiber transmission method and device. When the signal parameters, detected and sent by the common-fiber transmission system, of the optical communication system are received, the working modes and the working parameters of the QKD system and the common-fiber transmission system are initialized according to the received signal parameters of the optical communication system and the configured mapping relation; In the common-fiber transmission working process, monitoring signal parameters of the QKD system,and receiving the signal parameters, monitored by the common-fiber transmission system, of the optical communication system; When it is determined that the change of the optical power in the signal parameters of the optical communication system is greater than a first preset power threshold; and when it is determined that the current system performance cannot meet the preset performance index requirement according to the monitored signal parameters of the QKD system, the working parameters of the QKD system and the common fiber transmission system are adjusted according to the signal parameters of the current optical communication system and the configured mapping relation. Configuration and adjustment of system working modes and working parameters can be automatically achieved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a quantum key distribution and optical communication system co-fiber transmission method and device. Background technique [0002] Quantum key distribution (quantum key distribution, QKD) through the transmission and measurement of quantum states, first realizes the secure key sharing between the sender and the receiver that cannot be eavesdropped, and then combines with traditional secure communication technology to realize the encrypted transmission of classical information. [0003] Secure communication based on quantum key distribution is called quantum secure communication. As the first technology in the field of quantum communication to enter practical use, quantum secure communication has developed rapidly in terms of technology research, pilot application, and industrialization promotion in recent years. [0004] The QKD system signals include quantum state optical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04J14/02
Inventor 赖俊森李少晖吴冰冰赵文玉张海懿汤瑞汤晓华赵鑫
Owner CHINA ACADEMY OF INFORMATION & COMM
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