Photon-number distinguishable detection-based true random number generator

A technology of true random number and photon number, applied in the field of true random number generator, to achieve the effect of stable and reliable random source

Inactive Publication Date: 2011-02-23
EAST CHINA NORMAL UNIV
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Problems solved by technology

However, no matter what kind of classical system, the theoretical noise or random quantity evolves with time, and the influence of external factors on the classical system also exists, so these methods are not the best method for generating random numbers

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  • Photon-number distinguishable detection-based true random number generator
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  • Photon-number distinguishable detection-based true random number generator

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Embodiment Construction

[0019] The features of the present invention and other related features will be further described in detail below in conjunction with the accompanying drawings through embodiments, so as to facilitate the understanding of those skilled in the art:

[0020] The basic quantity of quantum mechanics is completely random due to its unpredictability, irregularity and non-repetition, so the true randomness shown in some aspects of the basic quantity of quantum mechanics can be used to generate true random numbers. As we all know, a coherent light source with a certain intensity has the characteristic of Poisson photon count statistics, and the detection of coherent light also conforms to the Poisson distribution. For example, if the light intensity is adjusted so that the average number of photons per pulse is 2, the number of photons detected each time is actually uncertain, and can be different values ​​such as 0, 1, 2, 3, etc., but according to the Poisson distribution The princip...

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Abstract

The invention discloses a photon-number distinguishable detection-based true random number generator and belongs to the class of quantum secure communication. Different photon-number incident events are combined into a 2-bit random number sequence according to the uncertainty principle of poisson distribution by using the characteristics of a photon-number distinguishable detector capable of distinguishing incident photon numbers. The true random number generator mainly comprises a photon-number distinguishable detection module, a photon-number identifying and processing module and a random number acquisition module and can generate high-speed random secret keys needed in the quantum secure communication. The true random number generator has stable and reliable random sources; the generated true random number cannot be repeated or deciphered by the random characteristics of light quanta; a complex post-processing procedure is not needed; and the true random number generator is convenient to use.

Description

technical field [0001] The invention belongs to the category of quantum security communication, and specifically refers to a true random number generator based on photon number resolvable detection, which is used to realize the generation of high-speed random keys required in quantum security communication. Background technique [0002] With the advent of the global information age, information security has become a common concern of all countries. In the quantum secure communication system, the random number plays an extremely critical role. As a mask, it is loaded on a single photon through a phase modulator, and then transmitted to the legitimate receiving end of the communication. If the random number used as the mask is not a true random number, the encoded information may be deciphered by a third-party eavesdropper, thereby threatening the security of communication. Therefore, how to generate stable and secure true random numbers has become a crucial link in quantum s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F7/58
Inventor 简轶梁焰任旻吴光武愕潘海峰曾和平
Owner EAST CHINA NORMAL UNIV
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