Quantum teleportation, retrocausality, and can black holes stop the time?

   Quantum teleportation, retrocausality, and can black holes stop the time?

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Retrocausality and quantum teleportation

Retrocausality and quantum teleportation are making it possible to control robots in the past and great distances. But if we want to create a quantum teleportation system that communicates with the robot that locates on other planets we must make little improvements for those systems because the record of the quantum teleportation is 44 kilometers. Quantum teleportation means that the qubit would stay in form between two quantum computers.

 But the quantum teleportation could make it possible to control vehicles with a high-speed quantum network from very long distances. If the quantum data transporter can be protected from outside effects the system can communicate with the robot, what locates even in Proxima Centauri. 

The communication between robot and earth would take 8,44 years but the system could transfer very high data masses if the data is sent in the virtual wormhole, which can be the internal laser rays. Or the electron can send inside the laser ray to Proxima Centauri. In that case, the laser ray would protect the electron inside that ray, and the data would not damage during that journey. 

https://www.sciencealert.com/scientists-achieve-sustained-high-fidelity-quantum-teleportation-over-44-km

Retrocausality and the affect from the future and present to past

The next part is even more hypothetical than the last one. So don't be so serious about that thing. This writing is only hypothetical thinking about things that might be possible, but not done yet. Or it might not be possible at all, but that kind of thing is interesting to think about. If we can send an electron to the past, we can control the machines in the past.  

Or if we can transmit electromagnetic radiation that affects brains and axons to the past, we could send data straight to human brains. And that makes it possible to send information from the future to the people, who are living in the past. So retrocausality is not meanless if that thing is possible. 

One interesting idea came to my mind about retrocausality. Retrocausality means that the future and past are interacting. So by benefiting from this phenomenon, we could control the robots, which are in the past. I know that this is the imagination, but theoretically, that thing is possible. But making a practical solution is very complicated, and the most difficult thing is to take robots to the past, and then make the connections with them from the future. 

The idea is that if there could be some drone swarms in the past by using retrocausality the connection through the time, we could take those drone swarms under control. But the problem is how to make the drone swarms in the past? Can we send the information about that to some "wise man", who will create those things, and then the sandstorm or the storm of the drones will destroy a couple of cities. 

https://www.scienceandnonduality.com/article/retrocausality-can-the-present-affect-the-past-2

https://www.newscientist.com/article/mg23731652-800-quantum-time-machine-how-the-future-can-change-what-happens-now/

Image: https://www.scienceandnonduality.com/article/retrocausality-can-the-present-affect-the-past-2

Is time stopped in the black hole?

The fact is that the time stops at the point of the event horizon, where the escaping velocity reaches the speed of the light. But the fact is that this kind of thing doesn't mean anything to us yet. The fact is that in the universe is many objects and phenomenon. But we ever cannot use them in any kind of form. And at this point, we might say never say ever again. because for this kind of prediction we must describe what means the term "ever". So if we are thinking about time itself and the universe, we must remember that even the universe itself is not lasting forever. 

The existence of some phenomenon and using that phenomenon are two different things. And I certainly hope that I must not fly to the black hole in any kind of form. Before we even can think of the possibility to use things like still hypothetical black holes, we must create technology that can use to make a black hole or travel to the black hole. And the last one is one out of the limits of human technology. 

Making things like a Tipler cylinder could make it possible to travel to Sagittarius A, but the thing is that even if the time would stop inside the cylinder by benefiting its rotational movement the journey to the Sagittarius A takes 3000 years, even if we could somehow reach the speed of the light. And the other thing is that the size of the singularity must be big enough that the craft can fly in it. But the fact is that we cannot even create materials, what would stand the centripetal force of the cylinder.

But in hope is good to live. Interstellar travel is one of the most interesting ideas in the world. But the fact is that most of the concepts created for that thing are purely theoretical level. And the only interstellar spacecraft that mankind has sent are reaching the other stars after 36000 years. 

So the realistic solutions for making an interstellar journey farther than Alpha Centauri during a lifetime of the crew are waiting even thousands of years. The time moves on earth with normal speed, and the people who sent those spacecraft would die a long time ago when the crew returns. In that case, the time would be dilated in the capsule by rotating it at the speed of light. 

 https://curiosityanddarkmatter.home.blog/2021/01/01/quantum-teleportation-retrocausality-and-can-black-holes-stop-the-time/