Quantum random number generation device and method capable of suppressing noise and generator

Abstract

The invention provides a quantum random number generation device and method capable of suppressing noise and a generator. The device comprises a light source, an interferometer, a first photoelectric detector, a second photoelectric detector, an analog-to-digital conversion module and a processor, the incident end of the interferometer is connected with the light source, the emergent end of the interferometer is connected with the first photoelectric detector and the second photoelectric detector, and the input end of the analog-to-digital conversion module is connected with the first photoelectric detector and the second photoelectric detector, the output end of the analog-to-digital conversion module is connected with the processor. In the invention, a scheme of double photoelectric detectors is adopted, signal light output by a laser is divided into two beams, and the two beams are respectively detected by a first photoelectric detector and a second photoelectric detector. Due to the fact that noise interference received by detection of the first photoelectric detector and the second photoelectric detector is consistent, the same noise part is removed in a subtraction mode, noise is restrained, and influences caused by detection errors of signal light are reduced.

Description

technical field [0001] The embodiments of the present application relate to the technical field of quantum random numbers, and in particular to a noise-suppressing quantum random number generation device, method, and generator. Background technique [0002] With the development of global informatization, information security in communication has been paid more and more attention by people. Information security often involves the encryption of information by keys, and the basis of keys is random numbers. Based on the quantum random number of quantum mechanics, the randomness of the random number is ensured due to the uncertainty principle of quantum mechanics. Therefore, the quantum random number generator is an important development direction of random numbers. [0003] In related technologies, the quantum random number generator usually adopts such as figure 1 device shown. In the quantum random number generator, the signal light output by the light source 101 is interf...

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Problems solved by technology

[0005] This application provides a quantum random number generation device, method and generator for suppressing noise, which can be used to solve the problem that the photodetector of the quantum random number generator in the related art will receive noise interference, resulting in the detection of signal light. Errors, which in turn affect the generation of random numbers

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