An optical chip for self-testing quantum random number generation

We present an implementation of a semi-device-independent protocol of the generation of quantum random numbers in a fully integrated silicon chip. The system is based on a prepare-and-measure scheme, where we integrate a partially trusted source of photons and an untrusted single photon detector. Th...

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Bibliographic Details
Published in:APL photonics 2020-10, Vol.5 (10), p.101301-101301-5
Main Authors: Leone, Nicolò, Rusca, Davide, Azzini, Stefano, Fontana, Giorgio, Acerbi, Fabio, Gola, Alberto, Tontini, Alessandro, Massari, Nicola, Zbinden, Hugo, Pavesi, Lorenzo
Format: Article
Language:English
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Summary:We present an implementation of a semi-device-independent protocol of the generation of quantum random numbers in a fully integrated silicon chip. The system is based on a prepare-and-measure scheme, where we integrate a partially trusted source of photons and an untrusted single photon detector. The source is a silicon photomultiplier, which emits photons during the avalanche impact ionization process, while the detector is a single photon avalanche diode. The proposed protocol requires only a few and reasonable assumptions on the generated states. It is sufficient to measure the statistics of generation and detection in order to evaluate the min-entropy of the output sequence, conditioned on all possible classical side information. We demonstrate that this protocol, previously realized with a bulky laboratory setup, is totally applicable to a compact and fully integrated chip with an estimated throughput of 6 kHz of the certified quantum random bit rate.
ISSN:2378-0967
2378-0967
DOI:10.1063/5.0022526