[nilson]

theese experiments are done for completly other purpose then this article suggest. otherwise "teleporting" photon would be pointless because you can just emit photon somewhere where you would like it to be. and it would be exactly the same photon. and not just "To all intents and purposes"

[JPLeRouzic]

You did not tell what is this "other purpose", but you might think about cryptography. Entanglement enables a mechanism where a secret key seems to exist only when it is activated from another location.

That way a satellite would be preloaded with hundreds of "hidden" secret keys and one of them would be available for encrypting only when it would be decided on the ground. A quantum twist to Merkle's puzzles.

I am not convinced by this kind of quantum cryptography. I am sure it would be possible to crack it, because all cryptography proposals are overly complexifying a little aspect of a much larger problem, and someone just look at another aspect of the problem and easily defeats the proposed cryptography scheme.

It is a pattern that we seen an incredible number of times, when do people will recognise it and adopt a more humble, honest and safer way to implement security?

Indeed I am yet another random guy on Internet, I am not versed in quantum cryptography, and I did not work on cryptography since a long time. But on the anecdoctical side, 12 years ago I had to work on identity/security and at that time when I told my colleagues that public cryptography was no more safe, they were baffled. For them it was pure non-sens, yet I could crack (factor in prime numbers) simple keys on my little laptop and RSA stopped a few years later their famous RSA challenge [0]...

[0] https://en.wikipedia.org/wiki/RSA_Factoring_Challenge