Quantum crypto felled by 'Perfect Eavesdropper' exploit

Then, it was not really a true quantum based number generator.

A true quantum system cannot be "observed" as it breaks the message packet and the key.

They should get sued for making false claims, if that is what they did.

So, you didn't read the article, right AlwaysWrong? Of course not.

Quantum Cryptrography always struck me as "too good to be true". And so it is.

?-(

It was never clear to me why I shouldn't be able to direct the single photon into a laser medium an amplify it.

Rene

IMO they cheated:

"The researchers... intercepted single photons traveling over a 290- meter fiber link network and then re-emitted the corresponding pulses of light.

"The re-emitted pulses in effect blinded the photodiodes used by the trusted party receiving the transmission of photons. As a result, the photodiodes were no longer sensitive to single photons, making them behave like classical detectors that generate a current proportional to the intensity of the incoming light."

Rather like opening a locked door by popping out the hinge pins.

Mark L. Fergerson