Parallel real-time quantum random number generator

The quantum random number generation exploits inherent randomness of quantum mechanical processes and measurements. The real-time generation rate of quantum random numbers is usually limited by electronic bandwidth and data processing rates. Here we use a multiplexing scheme to create a fast real-ti...

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Bibliographic Details
Published in:Optics letters 2019-11, Vol.44 (22), p.5566-5569
Main Authors: Guo, Xiaomin, Cheng, Chen, Wu, Mingchuan, Gao, Qinzhong, Li, Pu, Guo, Yanqiang
Format: Article
Language:English
Subjects:
Continuity (mathematics)
Data processing
Extractors
Field programmable gate arrays
Multiplexing
Numbers
Optoelectronics
Quantum mechanics
Random numbers
Randomness
Real time
Variations
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Summary:The quantum random number generation exploits inherent randomness of quantum mechanical processes and measurements. The real-time generation rate of quantum random numbers is usually limited by electronic bandwidth and data processing rates. Here we use a multiplexing scheme to create a fast real-time quantum random number generator based on continuous variable vacuum fluctuations. Multiple sideband frequency modes of a quantum vacuum state within a homodyne detection bandwidth are concurrently extracted as the randomness source. Parallel postprocessing of raw data from three subentropy sources is realized in one field-programmable gate array (FPGA) based on Toeplitz-hashing extractors. A cumulative generation rate of 8.25 Gbps in real time is achieved. The system relies on optoelectronic components and circuits that could be integrated in a compact, economical package.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.44.005566