Chinese scientists have succeeded in sending a photon to a device in Earth orbit. The big deal is that they used quantum entanglement, what Einstein called 'spooky motion at a distance' to do it.
Entanglement is a cool property of the universe in which two 'objects' (a photon is an object) can be linked in such a way that a change in one results in a change in the other, regardless of how far they are separated. What is spooky about this is that there is no media. The change simply happens!
What is actually teleported is 'quantum information' - and this is where cybersecurity comes in. One of the more common attacks is the 'man-in-the-middle' attack, where an attacker is able to eavesdrop on a communication. If full control of quantum entanglement can be achieved, there will be no 'middle' to attack.
However, much still needs to be understood. It is still not clear whether the change happens immediately, or somehow propagates with the speed of light. An experiment called Bell's Inequality tries to solve this but the matter is still being debated. So far there is no evidence that the speed of light is violated. But the possibility exists. If there is no 'between' the issue of speed could become mute.
https://time.com/4854718/quantum-entanglement-teleport-space/?fbclid=IwAR3RCF7AGy-wo9qP4Lo_u2CQStO25XJEnPCVdfwI9DX2WFkqCiYwLTXpgwI
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