Why This Quantum-Encrypted Video Hangout Is a Big Deal – But there are limits …

Even if this is a big improvment I quoted the following part :

…So Pan’s group had to incorporate conventional telecom technology to propagate their quantum signals. At several points in their network, they had to convert quantum information (polarizations) into classical information (voltages and currents) and then back into quantum. This isn’t ideal, because the absolute security of a quantum key relies on its quantum-ness. Anytime the key gets converted into classical information, normal hacking rules apply…

Just what we all wanted: super secret, super long meetings that span the entire world.

Source : Why This Quantum-Encrypted Video Hangout Is a Big Deal | WIRED

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