another method of acquiring randomness
iang at iang.org
Sat Dec 27 18:50:15 GMT 2014
Bruno Sanguinetti and pals at the University of Geneva in Switzerland
have worked out how to generate random numbers on an ordinary smartphone
using genuine quantum processes. And they say their new technique can
produce random numbers at the rate of 1 megabit per second, more than
enough for most security applications.
The quantum process that these guys exploit is the way light sources
emit photons. Because each emission is a quantum process, the instant of
emission cannot be predicted. So the number of photons that a light
source emits in a unit of time will always vary by an amount that is
entirely random. ...
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