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A quantum random number generator comprising: an entropy source comprising a laser source, a single photodiode configured for generating photo current based on received light from the laser source, where the photodiode has a non-unity quantum efficiency for allowing interference of the light from the laser source with a vacuum state to obtain entropy from the vacuum state, a transimpedance amplifier to convert the photo current into voltage, an analog-to-digital converter for converting the analog voltage to a digital output, a security proof which establishes a lower bound on the entropy from the vacuum state, a processing unit configured to convert the digital output from the analog-to-digital converter to random numbers based on the security proof.

Original languageEnglish
IPCG06F 7/ 58 A I
Patent numberWO2021094606
Filing date16/11/2020
Country/TerritoryInternational Bureau of the World Intellectual Property Organization (WIPO)
Priority date14/11/2019
Priority numberEP20190209203
Publication statusPublished - 20 May 2021


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