The relativistic quantum mirrors and materials basing the Klein paradox are maybe the key to the visual stealth systems.

F-35 Lightning II

Relativistic quantum mirrors can turn the light away from the observer. And those mirrors can use to make the object invisible to the observer. The idea of quantum mirrors is similar to "conventional" stealth technology. The radiation is turned to a different direction than it comes. That is made by using certain curves or making the soft angles to the aircraft. 

That turns the radio waves away from the transmitter. Or it can scatter the radiation in all directions what makes the radiation reflection that returns to the radar or the source of other electromagnetic radiation weaker. The quantum mirrors can use to turn the optical area radiation in different directions. And they can combine with stealth, which is used to turn the radar signals away from the transmitter. 

The quantum mirrors can be stable, which means they can turn lots of radiation away from the layer. So the small mirrors are turning the large part of radiation to the other directions. But the intelligent technology where the computer searches around and if it sees the observer. 

It can turn the mirrors to the direction, which denies the radiation reflection aim to the observer. Same way turning the radio waves away from the transmitter happens. And that thing makes it possible to combine radar and visual stealth. Those quantum mirrors can also turn laser rays away from the sender, and that thing makes it impossible to use the laser systems for measuring the distance to the target by using lasers.

A plasma electric jet engine allows conducting the radio signals for using the engines. 

The (plasma) electric jet engine can also revolutionize stealth systems. The radiation that the radar sends can collect and store in the battery, which is delivering it to the jet engine. That kind of system can use to remote load the batteries of the electric jet aircraft, but if the radar's radiation will connect to the battery, that means that it cannot give radar echo. 

And radars are feeding the power of the electric aircraft when they shine it. The electric turbines allow making the zero-emission aircraft.  But the same system allows using remote charge for high-speed aircraft. 

That charging can be made by using the maser radiation. When the aircraft is flying in flight routes, there can be charging stations, which allow loading the batteries of the electric power turbines. Also, things like nuclear reactors can install on aircraft. 

Benefiting Klein's paradox in stealth technology is also an interesting thing. 

The question is can there be possible for making the so-called  Klein's glass? Klein's glass means material that lets radiation go through it without scattering. There is the possibility that by benefiting quantum technology, where atoms are in vertical rows, that lets the radiation go straight through that material. There is also the possibility that by using nanotubes is possible to create that kind of material. 

The difference between Klein's glass and regular stealth material is that the electromagnetic radiation will not cause an effect on the material of the aircraft. When the scattering is removed or limited in the material that thing makes it possible to create material. 

Klein's glass is not storing energy when electromagnetic radiation affects it. But it also is invisible to the human eye. And that thing makes Klein's paradox so interesting. 

()https://lilium.com/jet

()https://phys.org/news/2021-07-relativistic-mirrors-high-power-laser-pulses.html

()https://revolution-green.com/the-electric-turbine/

()https://en.wikipedia.org/wiki/Klein_paradox

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