Quantum secret key distribution system and method based on vacuum state non-triggering

Abstract

The invention relates to a quantum secret key distribution system and method based on vacuum state non-triggering. A polarization beam splitter is additionally arranged at a receiving end, a deviation correction system is abandoned, the clutter degree of the system is simplified, and the production cost is reduced; an interference ring only adjusts one phase, the requirement of a DAC and an analogue amplifier which are in use is only a 10<-6> order of an existing mode, and the requirement of system design is greatly reduced. A 1*2 optical switch is used for selecting different channels to select corresponding signal states and decoy states, a vacuum state is achieved because a control signal laser does not emit light, and the structure cost of the system is reduced. In addition, the interference ring made of a planar optical waveguide is used, and the plane optical waveguide has polarization insensitivity, so that the system does not need extra polarization compensation means, the manufacturing process of the waveguide is extremely mature and can reach the submicron order, and the code rate of secret keys of the system is well increased.

Description

technical field [0001] The invention relates to the technical field of optical transmission security communication, in particular to a quantum key distribution system and method based on vacuum state non-triggering. Background technique [0002] With the widespread popularization of the Internet, information transmission among human beings has reached an unprecedented quantity and frequency, and various private information is increasingly exposed on the Internet. Therefore, human beings' demand for confidential communication has also reached an unprecedented height. The current Internet information security encryption method is called "public key" cryptography system. Its principle is to generate a public key that spreads on the network and a private key that stays inside the computer through an encryption algorithm. The two keys must match Use to achieve a complete encryption and decryption process. [0003] The encryption standard used by the modern Internet is the RSA al...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a quantum key distribution system and method based on a vacuum state without triggering, to solve the problem that the quantum key distribution system in the prior art needs to add a deviation correction system and polarization compensation technology in order to improve the key generation efficiency, so that Technical flaws that add complexity to the system and increase production costs

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