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Seminar “Quantum random number generator” by Damien Stucki, ID Quantique
Within the framework of the SiQuro project, Dr. Damien Stucki from ID Quantique (Geneve, Switzerland) is visiting us and giving a seminar entitled “Quantum random number generator”.
Generation of truly random sequences is an important problem for applications as key generation, numerical simulations or online gaming. Random number generators based on quantum physics - Quantum Random Number Generators (QRNGs) - are the best solution to generate random sequence because they are based on quantum physics. Quantum physics is intrinsically probabilistic, this means that it is probabilistic in contrast to classical physics, thus it is a good solution to generate random bit sequence. Random sequences produced by QRNG are also totally unpredictable, contrarily to random sequence generated by pseudo random number generator. With addition of randomness extractor, it is possible to guarantee the quality of the randomness.
A QRNG can be based on a photon source and a pair of detectors. Single photons are sent in direction of the detectors and they collapse on one of the detector. One detector associated to '0' and the second one to '1'. The sequence is generated from the detections on one or the other detector.