Ursin Group
ÖAW   Quantum Physics and Quantum Communication
Quantum Physics and Quantum Communication - Ursin Group
Quantum Physics and Quantum Communication – Ursin Group

An On-Demand Optical Quantum Random Number Generator with In-Future Action and Ultra-Fast Response

Author(s): M. Stipcevic, R. Ursin

Journal: Scientific Reports

Volume: 5

Page(s): 10214

Year: 2015

DOI Number: 10.1038/srep10214

Link: Link to publication


Random numbers are essential for our modern information based society e.g. in cryptography. Unlike frequently used pseudo-random generators, physical random number generators do not depend on complex algorithms but rather on a physicsal process to provide true randomness. Quantum random number generators (QRNG) do rely on a process, wich can be described by a probabilistic theory only, even in principle. Here we present a conceptualy simple implementation, which offers a 100% efficiency of producing a random bit upon a request and simultaneously exhibits an ultra low latency. A careful technical and statistical analysis demonstrates its robustness against imperfections of the actual implemented technology and enables to quickly estimate randomness of very long sequences. Generated random numbers pass standard statistical tests without any post-processing. The setup described, as well as the theory presented here, demonstrate the maturity and overall understanding of the technology.

Note: http://arxiv.org/abs/1407.4602

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