A team of quantum physicists has figured out how to shorten the time it takes for information to spread across the universe.
Under normal conditions, the speed of information transmission is equal to one bit per fundamental particle moving at a speed less than the speed of light. If you need to transmit information to a friend over a distance of one light year and you have one photon, then you encode it, send it, and a year later the friend receives information. You will also have to wait a year for a response from him. But this time can be shortened. LiveScience cites a study by a team of quantum physicists who proposed using the concept of "spatial superposition".
Spatial superposition is often described as the ability of a particle to be in two places at the same time. Thus, conditional Sasha and Masha can send information using the same particle. Upon receipt, they will see the encoded signal of both, but will be able to decode. If Masha encodes 0, and Sasha - 1, then the result will be 1. Masha knows that she encoded 0, therefore, Sasha's answer is 1, and vice versa. If both set the same signals, then the result will be 0.
The communication is done and it only takes a year. Laboratory studies have shown that this theory can work. Moreover, it provides a high level of secrecy of the transmitted information.
Tatiana Lehatkova