Device and method for generating quantum random numbers without post-processing with automatic deviation correction

Abstract

The invention discloses an automatic offset correction non-post-processing generating device and method for a quantum random number. The device comprises a quantum random number source, a sampling device and an automatic offset correction device. A quantum random number source is used for generating optical detection signals at a single-photon level, and the optical detection signals are output to the sampling device. The sampling device is used for sampling and counting the optical detection signals at the single-photon level, if the lowest order of the a count value has no offset, the random number is output; if the lowest order of the count value has offset, offset correction is performed on the quantum random number source through inputting the count value into the automatic offset correction device. The automatic offset correction device is used for performing offset calculation on the lowest order of the count value of the sampling device and performing offset correction on the quantum random number source, after sampling is performed again through the sampling device, and offset calculation is performed, if the lowest order of the count value still has the offset, offset correction is performed on the quantum random number source again, the circulation is performed until the lowest order of the count value of the sampling device has no offset, and then the random number is output. By the utilization of the automatic offset correction non-post-processing generating device and method, the high-quality high-speed real random number without post processing can be generated.

Description

technical field [0001] The invention relates to the field of encryption technology, in particular to an automatic deviation-correction non-post-processing quantum random number generation device and method. Background technique [0002] The most important feature of a random number is that the subsequent number has nothing to do with the previous number when it is generated. In many occasions, it is generated by a fixed and repeatable calculation method, called pseudo-random number. Although complex mathematical functions are used, in some encryption system applications, it has been proved that there are many ways to attack A system encrypted with pseudorandom numbers. Really critical applications must use true random numbers, and true random numbers are generated based on physical phenomena, such as throwing coins, dice, wheels, noise using electronic components, nuclear fission, etc. Such random number generators are called physics random number generator. [0003] Rand...

AI Technical Summary

Problems solved by technology

There are many ways to use optical quantum random number sources, such as the classic single photon detection scheme using two single photon detectors through a beam splitter. Due to the inconsistency of the detection efficiency of the detectors, it is very difficult to achieve unbiasedness. At the same time The random number rate generated by this scheme is very low

Other schemes have their advantages, and generally have some disadvantages, such as very low generation rate, poor quality of random number generation, or very complicated implementation, and post-processing is required

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