Multi-type quantum terminal compatible fusion network access system and method

Abstract

The invention discloses a multi-type quantum terminal compatible fusion network access system and method. The system comprises a quantum classical network access controller and multiple quantum terminals Alice, the quantum terminal Bob, and a ROADM; each quantum terminal Alice comprises a QKD sender, an Alice quantum service gateway and an Alice service terminal; the quantum Bob comprises a QKD receiver, a Bob quantum service gateway and a Bob service terminal; a quantum signal between the quantum terminal Alice and the quantum terminal Bob dynamically accesses to a quantum channel through theconnected ROADM and the quantum secret key distribution is performed; the Alice quantum service gateway encrypts the service information of the Alice service terminal and then sends the encrypted information to the Bob quantum service gateway to decrypt, the decrypted information is sent to the Bob service terminal to realize the mutual communication of the quantum terminal Alice and the quantumterminal Bob. The quantum and the classical signals are transmitted by using different wavelengths in the same optical fiber, thereby forming a quantum classical fusion network; and the networking cost of the quantum network can be greatly reduced. The quantum channel is fast and dynamically established by using the ROADM, and the flexibility of the quantum secret key distribution network is greatly enhanced.

Description

technical field [0001] The invention relates to the technical fields of quantum information and optical communication, in particular to a fusion network access system and method compatible with multiple types of quantum terminals. Background technique [0002] Quantum Key Distribution System (Quantum Key Distribution System, QKDS) is used to share keys among legitimate communication end users to ensure communication security. Different from the traditional cryptographic technology based on the complexity of mathematical calculations, the security of QKD (Quantum Key Distribution) is based on the physical characteristics of quantum, that is, Heisenberg’s uncertainty principle and the principle of uncloning of quantum states, which have been proved to be a theoretical Absolutely secure communication system. [0003] Since Bennet et al. of IBM proposed the first quantum key distribution protocol - BB84 protocol in 1984, people have successively proposed various protocol types ...

AI Technical Summary

Problems solved by technology

[0007]1. Quantum signals need to monopolize the optical fiber link, which is costly and wastes the transmission bandwidth of optical fiber

[0008]2. The optical fiber communication links between terminals need to be planned and established in advance, causing a lot of waste when there is no actual communication

[0009]3. Quantum terminal protocol requirements are consistent; heterogeneous networks compatible with multiple types of quantum terminals are not supported

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