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Discussion on: Post-Quantum Cryptography, Part 1: Quantum Computing

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Kasey Speakman

I understand that there are underlying mathematic principles that give a pretty good approximation of the effect when you pretend there are 2 photons instead of one. And that these are just our current operating theories in absence of true understanding. But do these theories not both seem a bit "imaginative"? I guess we'll see in the coming years.

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Ari Kalfus

The first quantum cryptographic exchange was performed in 1989. The distance was only 30 cm but proved that quantum computing in respect to cryptography was more than just a theory. In 2016, China launched a "quantum satellite". The theories are definitely imaginative, but they are being used in practical research! Our understanding of quantum mechanics will definitely increase in the years to come.