Generating device for true random number based on phase noise

Abstract

The invention provides a generating device for true random number based on phase noise. The device comprises a laser device, a control element, a beam splitting slice, an acoustic optical modulator, a light interference element, two photovoltaic conversion elements, a frequency mixer, a filtering element and an analog-digital conversion element, wherein the laser device is used for generating a laser beam with the phase noise; the control element is used for controlling the strength of the laser; the beam splitting slice is used for dividing the laser passing by the control element into a first laser beam and a second laser beam; the acoustic optical modulator is used for moving the central frequency of the second laser beam; the light interference element is used for interfering the first laser beam and the second laser beam passing by the acoustic optical modulator, thereby acquiring the interference light; the two photovoltaic conversion elements are used for converting an optical signal into an electric signal; the frequency mixer is used for mixing the frequencies of two electric signals, thereby acquiring a frequency mixing signal; the filtering element is used for performing high frequency filtering on the frequency mixing signal, thereby acquiring an analog signal proportional to the phase noise; the analog-digital conversion element is used for converting an analog signal into a digital signal, namely, the true random number.

Description

technical field [0001] The invention relates to the field of quantum random numbers in information science quantum communication, in particular to a device for generating true random numbers based on phase noise. Background technique [0002] Random numbers play an important role in cryptography and secure communication, and are also widely used in a series of occasions such as simulation and gaming. In quantum communication, especially in quantum key distribution technology, random numbers also play a vital role. In order to achieve theoretically unconditionally secure secure communication, it is necessary to combine quantum key distribution technology and the "one-time pad" scheme, so an ideal, completely random, and sufficiently long random number sequence is required. [0003] So far, it is recognized that only certain physical processes in quantum physics can generate theoretically perfect random numbers, that is, true random numbers. Therefore, quantum random numbers...

AI Technical Summary

Problems solved by technology

[0021] However, using this method to generate quantum random numbers is easy to introduce some classical noise, such as electrical noise, fiber jitter noise, etc., which will cause some bias in the generated quantum random numbers.

Images