Greetings, Mister Principal: Quantum entanglement

It only takes a genius one second to remember the address of this website: (Vertex Chinese), the fastest updates! No ads!? The classic magic system believes that the most important criterion for judging whether a theory is correct is whether the theory itself is self-consistent and whether it can It can explain the experimental rules well, even if the theory goes against human intuition or some views that have long been ingrained in cognition, as long as it meets these two points, the mages can accept the theory.

For example, Reiner initially overturned the theory of the four elements of earth, water, wind, and fire, and instead proposed the coexistence of multiple elements. Although this new view had a considerable impact on the alchemical system of the past hundreds of years, , but after experimental verification, Reiner's theory was correct, so the mages began to gradually accept such a theory.

Another example is quantum theory. Although it has gone beyond the scope of common sense and has fundamentally subverted people's cognitive world, it has successfully explained experimental phenomena and is therefore acceptable.

Legendary mages such as Lord Braggs and Lord Alberton have stipulated two conditions to test whether a theory is successful.

The first is that the magic theory must be correct. This is actually the degree to which the predictions of the magic theory conform to the experimental test results. The more accurately the theory can describe the experiment, the more correct the theory will be.

The second is that the magic theory must give a complete description. To understand this simply, every actual element of magic must have its corresponding element in the magic theory, which is a complete magic theory. , must be able to accurately describe every element of magic.

For quantum theory, the first condition seems to have been passed. Quantum theory can successfully predict many abnormal phenomena of microscopic particles and provide answers.

But the second condition is somewhat contradictory to quantum theory.

First of all, according to the Iain Gray Uncertainty Principle, mages can never accurately measure the position and momentum of a microscopic particle at the same time, which violates the criterion of completeness.

Secondly, according to the description of general relativity, the speed of light is the speed limit, and any event and information transmission cannot exceed the speed of light. However, in quantum theory, the state of two entangled quanta can be determined, that is, observation The spin state of one quantum can confirm the spin state of another quantum, and this confirmation is regardless of distance.

"In a quantum system with a total spin of zero, if the spin of one particle is a certain value, then the spin of the other particle can be accurately calculated based on this value."

Reiner repeated the results obtained by the mages in the experiment and muttered to himself.

This is currently the biggest challenge to quantum theory.

Because this quantum entanglement phenomenon is currently not limited by distance. To be precise, the spin state of another particle is determined by the spin state of the current particle. The mages do not even need to observe the other particle. The state of the particle.

This phenomenon quickly reminded the mages of Sauron's alien species.

The magic resistance of Sauron mutants is that as long as one Sauron mutant is killed by a specific spell, this magical resistance will be passed to all Sauron mutants almost at the same time without taking time. This is equivalent to the entire group of Sauron mutants actively evolving in a short period of time.

This is incomprehensible and the biggest trouble.

This means that mages cannot use some extremely destructive spells at will. Although this can destroy most of the incoming Sauron alien species, once used, this spell will have an impact on other Sauron alien species in the future. It's just minuscule.

After the mages discovered the phenomenon of quantum entanglement, they put forward an idea, that is, the active evolution ability of Sauron mutants actually relies on quantum theory. Each Sauron mutant will have certain Quantum entanglement with other individuals. Such entanglement can be easily explained. The reproduction of Sauron's alien species itself can easily cause this phenomenon.

In the phenomenon of quantum entanglement, an individual of Sauron's alien species was hit, and at the same time the quantum state was changed. This state can be passed to other individuals, so in an instant, all individuals got the information of the spell , resulting in countermeasures.

The mages want to analyze this phenomenon and try to find a way to fight Sauron's alien species.

However, the characteristics of quantum entanglement lead to one of the biggest problems, that is, if the distance between the two particles is too long, the result of this observation will exceed the speed of light.

If two particles are one light-year apart, then according to the explanation of general relativity, if people on both sides observe the spin state of the particles at the same time and transmit it to each other, it will take at least a year for the observers to obtain Know the spin states of each of the two particles.

But in quantum theory, the spin states of the two particles are related and entangled. As long as the state of one particle is known, the state of the other particle can be known immediately~IndoMTL. com~The transfer of this information is instantaneous.

This violates the corollary in the general theory of relativity that the transmission of any information will not exceed the speed of light.

“So, relying on the phenomenon of quantum entanglement, we can create communication devices that transmit information very quickly?”

Emilia tilted her head. She was originally giving afternoon tea to Reiner in the laboratory, but she found that Reiner was not conducting experiments as usual, but was sitting on a chair, facing the blank blackboard. Thinking, so I asked curiously, and after receiving Reiner's patient explanation, I came to this idea.

"Theoretically, this is possible. Since the current communication is at most electromagnetic wave communication, which is limited by the speed of light, although the magic computer has laid communication optical cables, in the half plane that can be reached now, the communication delay is almost negligible. But if we want to go to the stars and the sea in the future, this communication delay is a problem that must be solved."

Reiner was a little surprised. He didn't expect Emilia to think of this so quickly. He originally thought that Emilia didn't care much about issues related to magic computers and the Internet.

"However, what does the completeness proposed by Mr. Braggs mean? Every actually existing element of magic must, uh, must have its corresponding element in the magic theory. What does this have to do with quantum entanglement? ?"

Although Emilia could barely understand the problems Reiner described, she still didn't quite understand the core of the problems Reiner faced.

"Well, I can use a little game to explain this to you."

Reiner nodded. The reason why he explained to Emiya in such detail was partly to make his thinking clearer.

He took out a stack of cards from his storage bag, which is a prop used in a very popular game.

"Let's simulate the phenomenon of quantum entanglement."