[HN Gopher] Massively parallel ultrafast random bit generation w...
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       Massively parallel ultrafast random bit generation with a chip-
       scale laser
        
       Author : ycnews
       Score  : 17 points
       Date   : 2021-02-27 20:23 UTC (2 hours ago)
        
 (HTM) web link (science.sciencemag.org)
 (TXT) w3m dump (science.sciencemag.org)
        
       | xiphias2 wrote:
       | Why is it any better than a slow true random seed and
       | pseudorandom numbers based on a secure hash function? I can't
       | think of any application.
        
         | goalieca wrote:
         | There's really no true seed unless you have some sort of
         | quantum system. Many are based on sources of noise and are
         | actually somewhat slow. Small IoT devices often have poor
         | generation.
         | 
         | A fast source of high quality numbers available to every
         | computer is still an open problem.
        
           | JulianMorrison wrote:
           | Also anything that expects to seed based on keyboard and
           | mouse is not going to get much to seed from, in a widget
           | attached to your wall.
        
       | bjoli wrote:
       | I didnt know what to expect. It was a lot lower than the claimed
       | 250 terabit/second. The fastest I have ever gotten bits out of
       | dedicated hardware is only about 500 b/s. Now. I didn't try very
       | hard, but I didn't think anything in the gigabit range was
       | possible on a single chip.
        
       | RobLach wrote:
       | For the underprivileged:
       | 
       | https://arxiv.org/abs/2004.07157
       | 
       | (Dunno the differences between the preprint and the published
       | one. The preprint claims 100tb/s.)
        
         | cocoafleck wrote:
         | The published one is significantly shorter which surprised me
         | (6 pages vs 14 pages), but it does claim a different rate in
         | the final paper "All these test results certify the randomness
         | of our parallel random bits generated at a cumulative rate of 2
         | Tb/s x 127 = 254 Tb/s".
        
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       (page generated 2021-02-27 23:00 UTC)