This is a big breakthrough. If they can do it at 10m then the scale is unlimited.
It essentially should circumvent MITM attacks.
Yeah my IT department won’t see that as a feature. They want to be the man in the middle.
This is the scientific term teleportation, not the Sci-fi bullshit.
Quantum encryption will be “broken” the same way as conventional crypto is: side channels. It’s nice to have, but it doesn’t solve the most common attacks.
I don’t get it. From my understanding it sounds like they measure (but not actually because that would affect the photon) and produce a copy of it at another point with it still being unknown. The „measuring“ is something something calculations, but how do they transfer information to create that photon again?
Disclaimer: it’s been a decade since I did my undergrad in physics.
Its called entanglement. Meaning two things are quantum linked to be the same state. In this case the dots. This is done without any physical link between them. That’s what makes this teleportation.
So what happens is both sides are in a quantum state where each dot is both 0 and 1. But importantly when measured they will produce the same result. The other effect is what you do to one dot, you do to both.
This is where I get fuzzy.
The idea here is to have one dot in the computer and one dot to observe outside. You do the physics in the computer to compute the result, then observe the dot outside to see the result.
What’s the use for this
Did you even read the article? Its mentioned right at the beginning.
Yeah and we already have post quantum encryption so what reason do we need a quantum internet
Nothing personal, kid.
Lag-free communication.
No.
Slag free communication?
Slug-free communication. Finally!
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We have proven that’s impossible. Speed limit c Einstein enforced.
Why impossible? Genuinely curious
Physics. But their is scientific consensus that you can’t transfer information faster than light. Our maths for both quantum physics and Einsteinian physics have both proven its impossible. Ohh and it fundamentally breaks causation. Grandfather paradox type shit.
I’ve been lead to believe that it’s like if the speed of causality is the north pole. You can approach it and reach the north pole but once you try to surpass the point at the north, you begin to move in the opposite direction.
To simplify - c is the maximum speed at which a “cause” can be transferred.
If I send a radio signal to turn on a light, and the light will only turn on in response to that signal, the signal cannot travel faster than c otherwise it would not have been able to turn on the light.
Depends on how much time you got innit
Teleportation is instantaneous; there is 0 travel time.🤦♂️
