scholarly journals Symmetry of Information and Bounds on Nonuniform Randomness Extraction via Kolmogorov Extractors

2011 ◽  
Author(s):  
Marius Zimand
Keyword(s):  
Randomness Extraction ◽  
Symmetry Of Information

scholarly journals Device-independent randomness extraction for arbitrarily weak min-entropy source

2014 ◽  
Author(s):  
Jan Bouda ◽  
Marcin Pawłowski ◽  
Matej Pivoluska ◽  
Martin Plesch
Keyword(s):  
Randomness Extraction ◽  
Entropy Source

scholarly journals Randomness Extraction from Bell Violation with Continuous Parametric Down-Conversion

2018 ◽  
Vol 121 (15) ◽  
Author(s):  
Lijiong Shen ◽  
Jianwei Lee ◽  
Le Phuc Thinh ◽  
Jean-Daniel Bancal ◽  
Alessandro Cerè ◽  
...  
Keyword(s):  
Bell Violation ◽  
Parametric Down Conversion ◽  
Randomness Extraction ◽  
Down Conversion

scholarly journals Quantum randomness extraction for various levels of characterization of the devices

2014 ◽  
Vol 47 (42) ◽  
pp. 424028 ◽  
Author(s):  
Yun Zhi Law ◽  
Le Phuc Thinh ◽  
Jean-Daniel Bancal ◽  
Valerio Scarani
Keyword(s):  
Quantum Randomness ◽  
Randomness Extraction

Randomness extraction from a chaotic laser diode with dispersive self-injection

2016 ◽  
Author(s):  
Song-Sui Li ◽  
Xiao-Zhou Li ◽  
Jun-Ping Zhuang ◽  
Sze-Chun Chan
Keyword(s):  
Laser Diode ◽  
Chaotic Laser ◽  
Randomness Extraction

scholarly journals Enhancing Extractable Quantum Entropy in Vacuum-Based Quantum Random Number Generator

2018 ◽  
Author(s):  
Xiaomin Guo ◽  
Ripeng Liu ◽  
Pu Li ◽  
Chen Cheng ◽  
Mingchuan Wu ◽  
...  
Keyword(s):  
Random Number ◽  
Quantum Noise ◽  
Sampling Rate ◽  
Random Number Generator ◽  
Vacuum State ◽  
Extraction Ratio ◽  
Quantum Entropy ◽  
Number Generator ◽  
Raw Data ◽  
Randomness Extraction

Information-theoretically provable unique true random numbers, which cannot be correlated or controlled by an attacker, can be generated based on quantum measurement of vacuum state and universal-hashing randomness extraction. Quantum entropy in the measurements decides the quality and security of the random number generator (RNG). At the same time, it directly determines the extraction ratio of true randomness from the raw data, in other words, it obviously affects quantum random bits generating rate. In this work, we commit to enhancing quantum entropy content in the vacuum noise based quantum RNG. We have taken into account main factors in this proposal to establish the theoretical model of quantum entropy content, including the effects of classical noise, the optimum dynamical analog-digital convertor (ADC) range, the local gain and the electronic gain of the homodyne system. We demonstrate that by amplifying the vacuum quantum noise, abundant quantum entropy is extractable in the step of post-processing even classical noise excursion, which may be deliberately induced by an eavesdropper, is large. Based on the discussion and the fact that the bandwidth of quantum vacuum noise is infinite, we propose large dynamical range and moderate TIA gain to pursue higher local oscillator (LO) amplification of vacuum quadrature and broader detection bandwidth in homodyne system. High true randomness extraction ratio together with high sampling rate is attainable. Experimentally, an extraction ratio of true randomness of 85.3% is achieved by finite enhancement of the laser power of the LO when classical noise excursions of the raw data is obvious.

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