[cryptography] How far are we from quantum cryptography?

Kevin kevinsisco61784 at gmail.com
Wed Jan 28 13:15:14 EST 2015


On 1/28/2015 12:49 PM, Marci wrote:
>> Okay, we see a lot about quantum cryptography and how today's
>> cryptosystems are mere toys compared to a quantum computer.  Great, but
>> in this post-quantum world how close are we to seeing it in action?
> So, i read the starting message and the according subject "How far are
> we from quantum cryptography?"
> and when i continued reading the follwing mails i wondered if that even
> answered the question, since
> quantum computing != quantum cryptography
>
> Ccommon 'quantum cryptography' is basicly a public-key-system with
> quantum-states being send from Alice to Bob, i believe we already do
> have quite some research on that. Using photons as quantum states and
> fibreglass to transfer the photons there have been successful
> implementations over > 100 km. In theory there also are some 'secure'
> protocolls...
> I gues we will be seeing quantum cryptography in action prior to quantum
> computation.
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Yes, we have research but can we see it in action yet?


-- 
Kevin


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