Certified Quantum Random Numbers from Untrusted Light

A remarkable aspect of quantum theory is that certain measurement outcomes are entirely unpredictable to all possible observers. Such quantum events can be harnessed to generate numbers whose randomness is asserted based upon the underlying physical processes. We formally introduce, design, and expe...

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Published inPhysical review. X Vol. 10; no. 4; p. 041048
Main Authors Drahi, David, Walk, Nathan, Hoban, Matty J., Fedorov, Aleksey K., Shakhovoy, Roman, Feimov, Akky, Kurochkin, Yury, Kolthammer, W. Steven, Nunn, Joshua, Barrett, Jonathan, Walmsley, Ian A.
Format Journal Article
LanguageEnglish
Published College Park American Physical Society 09.12.2020
Subjects
Cryptography
Light sources
Lotteries
Mathematical models
Numbers
Parameters
Protocol
Quantum mechanics
Quantum theory
Random numbers
Randomness
Real time
Security
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Abstract A remarkable aspect of quantum theory is that certain measurement outcomes are entirely unpredictable to all possible observers. Such quantum events can be harnessed to generate numbers whose randomness is asserted based upon the underlying physical processes. We formally introduce, design, and experimentally demonstrate an ultrafast optical quantum random number generator that uses a totally untrusted photonic source. While considering completely general quantum attacks, we certify and generate in real time random numbers at a rate of8.05Gb/swith a composable security parameter of10−10. Composable security is the most stringent and useful security paradigm because any given protocol remains secure even if arbitrarily combined with other instances of the same, or other, protocols, thereby allowing the generated randomness to be utilized for arbitrary applications in cryptography and beyond. This work achieves the fastest generation of composably secure quantum random numbers ever reported.
AbstractList A remarkable aspect of quantum theory is that certain measurement outcomes are entirely unpredictable to all possible observers. Such quantum events can be harnessed to generate numbers whose randomness is asserted based upon the underlying physical processes. We formally introduce, design, and experimentally demonstrate an ultrafast optical quantum random number generator that uses a totally untrusted photonic source. While considering completely general quantum attacks, we certify and generate in real time random numbers at a rate of8.05Gb/swith a composable security parameter of10−10. Composable security is the most stringent and useful security paradigm because any given protocol remains secure even if arbitrarily combined with other instances of the same, or other, protocols, thereby allowing the generated randomness to be utilized for arbitrary applications in cryptography and beyond. This work achieves the fastest generation of composably secure quantum random numbers ever reported.
A remarkable aspect of quantum theory is that certain measurement outcomes are entirely unpredictable to all possible observers. Such quantum events can be harnessed to generate numbers whose randomness is asserted based upon the underlying physical processes. We formally introduce, design, and experimentally demonstrate an ultrafast optical quantum random number generator that uses a totally untrusted photonic source. While considering completely general quantum attacks, we certify and generate in real time random numbers at a rate of 8.05  Gb/s with a composable security parameter of 10^{-10}. Composable security is the most stringent and useful security paradigm because any given protocol remains secure even if arbitrarily combined with other instances of the same, or other, protocols, thereby allowing the generated randomness to be utilized for arbitrary applications in cryptography and beyond. This work achieves the fastest generation of composably secure quantum random numbers ever reported.
ArticleNumber 041048
Author Drahi, David
Nunn, Joshua
Walmsley, Ian A.
Hoban, Matty J.
Shakhovoy, Roman
Barrett, Jonathan
Kolthammer, W. Steven
Kurochkin, Yury
Fedorov, Aleksey K.
Walk, Nathan
Feimov, Akky
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Snippet A remarkable aspect of quantum theory is that certain measurement outcomes are entirely unpredictable to all possible observers. Such quantum events can be...
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StartPage 041048
SubjectTerms Cryptography
Light sources
Lotteries
Mathematical models
Numbers
Parameters
Protocol
Quantum mechanics
Quantum theory
Random numbers
Randomness
Real time
Security
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Title Certified Quantum Random Numbers from Untrusted Light
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