A fast and compact quantum random number generator

  title={A fast and compact quantum random number generator},
  author={Thomas Jennewein and Ulrich Achleitner and Gregor Weihs and Harald Weinfurter and Anton Zeilinger University of Vienna and University of Innsbruck and University of Munich},
  journal={Review of Scientific Instruments},
We present the realization of a physical quantum random number generator based on the process of splitting a beam of photons on a beam splitter, a quantum mechanical source of true randomness. By utilizing either a beam splitter or a polarizing beam splitter, single photon detectors and high speed electronics the presented devices are capable of generating a binary random signal with an autocorrelation time of 11.8 ns and a continuous stream of random numbers at a rate of 1 Mbit/s. The… 

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