Quantum Teleportation across the Danube Demonstrated

[MongoTheGeek]

However, your toppings may vary - remember the 97 % correctness ?

Hey I didn't order cesium...

 

[jsw]

OK, I see where you're coming from, but there are a couple of concerns. (I wish I could remember more from my quantum mechanics course, but one thing I do recall was that my professor was quite adamant about the distinction between the two sorts of "teleportation".)...

Oh, absolutely, the issue of scale strongly suggests we'll never get this to work. However, we've managed to do a lot of things considered "impossible" before, and I don't think that large-scale teleportation has actually yet been proven impossible. However, it's certain it won't be used to deliver your next G5 PB. Unless the new ones are incredible small...

Also, yes, no matter is actually teleported. Information obtained by destroying matter is used to reconstitute matter elsewhere. The information is sent via entanglement, but nothing "solid" is sent. And, due to the mechanism used, you only get to make one copy. Sorry, Mr. Anderson. And, truly, so sorry, edesignuk.

 

[Abstract]

I don't understand why this is a big deal? I mean, two photons are produced, and they're entangled.....so?? If the state of one photon is perturbed, the other photon feels it. Does this happen simultaneously at any distance apart, or does it happen at light speed? If it happens at light speed, we may as well just continue using microwaves and such.

And why was there a need for a sewer pipe and microwaves to be sent across the Danube? What were they checking for, or what were they trying to do?