[Cryptography] Photon beam splitters for "true" random number generation ?

[Jerry Leichter]

>> We argue using simple models that all successful practical uses of probabilities originate in quantum fluctuations in the microscopic physical world around us, often propagated to macroscopic scales....
>> 
>> We comment on the general implications of this view, and specifically question the application of classical probability theory to cosmology in cases where key questions are known to have no quantum answer.
> 
> This can't be true, unless the defn is chosen to make it vacuously true.
> 
> For example, even classical 3-body Newtonian gravitation is chaotic in such a way that the future cannot be predicted....
I suggest you read the paper.

Chaos != randomness.  Nor is it quite the same as unpredictability.  This a common mistake from newbies who define a chaotic system, use it to key a one-time pad, and say "Here's my completely secure system".  Well ... no.

                                                        -- Jerry