Quantum random number generator based on amplified vacuum state

Abstract

The invention provides a quantum random number generator based on an amplified vacuum state. The quantum random number generator comprises an optical path module and a circuit module. The output end of the optical path module is connected with the input end of the circuit module. The optical path module comprises a laser, a beam splitter, a balanced homodyne detector, a vacuum state generator and a light amplifier. The output end of the vacuum state generator is connected with the input end of the light amplifier. The output end of the light amplifier is connected with one input end of the beam splitter. The output end of the laser is connected with another input end of the beam splitter. The output end of the beam splitter is connected with the input end of the balanced homodyne detector. The invention further provides a corresponding method. The generator generates the quantum random number through the measured and amplified vacuum state, a pseudo noise code and original ratio specific mode is used for error removal treatment, and therefore a true random number which is higher in production speed and better in randomness is produced.

Description

technical field [0001] The invention relates to a quantum random number generator, in particular to a quantum random number generator and method based on an amplified vacuum state. Background technique [0002] With the development of computer and information technology, the security of information is becoming more and more important, and the encryption technology as a guarantee of information security is becoming more and more important. Among them, random number theory is one of the most important components of cryptography. Today, random numbers play a very important role not only in the field of cryptography, but also in other scientific research fields, such as secure communication, Monte Carlo simulation and authentication. An application case of random numbers is quantum key distribution, in which random numbers are a very important security basis. However, pseudo-random numbers are widely used now. Although these pseudo-random numbers are very important in practica...

AI Technical Summary

Problems solved by technology

[0004] At present, the bit rate of random numbers obtained by measuring vacuum state fluctuation noise is relatively low, and includes DC deviation. These factors include but are not limited to:

[0005] 1. The randomness contained in the vacuum state quantum fluctuation noise is limited;

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