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Ultra-high-speed quantum random number generator and generation method based on laser phase fluctuation

A quantum random number and phase fluctuation technology, which is applied in random number generators and other directions, can solve problems such as inability to meet security requirements, and achieve the effect of increasing the generation rate

Inactive Publication Date: 2015-11-04
INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

Therefore, it cannot be used in some areas with high security requirements

Method used

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  • Ultra-high-speed quantum random number generator and generation method based on laser phase fluctuation
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  • Ultra-high-speed quantum random number generator and generation method based on laser phase fluctuation

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Embodiment

[0044] See figure 1 , the embodiment of the present invention provides an ultra-high-speed quantum random number generator based on laser phase fluctuation, including a laser light source 1, a double-beam interferometer 2, a phase control system 3, a photodetector 4 and an analog-to-digital converter 5,

[0045] The two-beam interferometer 2 includes a circulator 21, a beam splitter 22, a first mirror 24 and a second mirror 25,

[0046]The beam splitter 22 includes a first port B1 and a second port B2 arranged on the input side, and a third port B3 and a fourth port B4 arranged on the output side; the circulator 21 includes an input terminal C1, a transceiver multiplexing terminal C2 and output C3,

[0047] The phase control system 3 includes an optical power meter 31, a PID controller 32, a piezoelectric controller 33, and a piezoelectric phase shifter 34 connected in sequence, and the input end of the optical power meter 31 is connected to the first port B1 , the output te...

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Abstract

The invention discloses an ultra-high-speed quantum random number generator based on laser phase fluctuation. The ultra-high-speed quantum random number generator comprises a laser light source, a double-beam interferometer, a phase control system, a photoelectric detector and an analog-digital converter, wherein optical radiation output by the laser light source is interfered through the double-beam interferometer, one interference light path is provided with a voltage-controlled phase shifter by the double-beam interferometer; the phase control system guarantees a phase difference between the two interference light paths is kept at a preset value through the regulation of the voltage-controlled phase shifter so as to realize a purpose that the phase fluctuation of the laser light source and the output light intensity of the interferometer correspond one by one; and the photoelectric detector and the analog-digital converter output the original data of a random number, and a final quantum random number is obtained after the original data is subjected to aftertreatment. The invention also discloses an ultra-high-speed quantum random number generation method based on the laser phase fluctuation. The ultra-high-speed quantum random number generator and generation method can greatly improve a random number generation rate.

Description

technical field [0001] The invention relates to an ultra-high-speed quantum random number generation technology, in particular to an ultra-high-speed quantum random number generator based on laser phase fluctuations. Background technique [0002] Random numbers are a widely used basic resource, and a random number generator is a device used to generate random number sequences. Random number generators with good performance have extensive and important applications in many fields such as quantum communication, cryptography, gaming industry, Monte Carlo simulation, numerical calculation, random sampling, etc. [0003] According to the characteristics of random numbers, random numbers can be divided into two categories: pseudo-random numbers and true random numbers. Pseudo-random numbers are usually generated by an algorithm based on a specific initial value. For a certain algorithm and the initial value assigned to the algorithm, its random number sequence is definite, so it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F7/58
Inventor 张军聂友奇潘建伟
Owner INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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