Wish I knew how to add pictures.
Posted on 08/19/2017 1:55:39 AM PDT by TigerLikesRooster
Chinese military bump for later....
Wish I knew how to add pictures.
Hack proof communications sounds like a dare game on ?.
“20 orders of magnitude more efficient than an optical fiber”
hmmm. 20 orders of magnitude is roughly equivalent to 20 x 10, i.e., 200 times more “efficient” than optical fiber, so does that mean roughly 200 times the speed of light then? not to mention optical fiber can carry dozens of independent streams at near the speed of light, not something cheap or easy to do with radio spectrum.
A photon captures the “quantum state” of the electron that generated it. When the photon hits another electron, the target electron absorbs the quantum state of the source electron.
The quantum state is the magnetic field (expressed as a vector) generated by the source electron as it “spins” around a nucleus. The field vector has both an angle and a magnitude. It is information and can represent a set of bits.
The more accurately you can measure the field of an electron, the more bits you can reliably store in it and read from it. Right now, they can read up to 2k bits from a single electron.
If they are really using quantum entanglement, they don’t need the photon. Because the source and target electrons are entangled, changes in the field generated by the source instantly induce changes in the entangled target.
Entanglement is the only way you could do this from an earth station to a satellite. That’s what makes this article about the Chinese quantum satellite so very impressive.
Where you have electrons that are under quantum entanglement, no photon is needed.
Bttt.
5.56mm
They might discover that entangled electrons are two that exist in the same point in the space-time continuum, really the same electron. Space taken consideration of varying time could yield a translation of a single point in space-time to two separate points in space by itself.
Don’t even get me started on what the implications are of that. But that’s just my speculation on how it works.
“Entanglement is the only way you could do this from an earth station to a satellite”
So, how did they get the entangled electron to the satellite? Did they entangle it before the launch and sent it up with the satellite? And how is that single electron stored and kept track of on both earth and the satellite?
And can many electrons be entangled to the same electron and among each other?
Also I don’t get how a photon “captures” the quantum state of an electron, since they’re such different “particles”.
Just trying to understand...
Yes, they’d surely have to entangle the electrons before launch and separate onto two different wafers. It’s not really as hard as it sounds. When you pull apart your clothes from the dryer and there’s static electricity, there’s millions of electron pairs that are entangled for a brief moment. Isolating a single entangled electron pair is being done in labs all over the place nowadays.
When you get to multiple electrons in an entangled “system”, that’s really complicated and organizing into something useful is hard to do, though it’s being done. Not to change the subject, but that’s what a quantum computer is. That’s a whole ‘nother topic.
As for the photon, it is simply electromagnetic energy produced by an electron going from a high energy shell around a nucleus to a lower energy shell. The angular momentum of the electron is captured in the photon generated when that happens. I can’t really say why the photon does this, but when it strikes another electron and transfers that energy to it, the angular momentum of the original electron is captured in the change observed on the target electron. I don’t know if the physicists understand how this happens; it may just be a phenomena they’ve observed.
Another day another Chinese-technology-superiority story. Their huge dam is a disaster and their bridges fall down daily.
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