Quantum encrypted communication is actually a security key with the help of quantum, which is still traditional communication in essence, but the encryption method has changed.

For example, A sends a string of quantum feature codes to B, A records the deflection angle of each quantum when transmitting, and B records each deflection angle when receiving.

If a third party discovers the signal and eavesdrops, the quantum state will change according to the observer effect, and B will get the wrong result.

A then sends the deflection result of the recorded quantum feature code to the public, B compares it, if there is an error, it can be proved that it was eavesdropped, and A re-compiles a new feature code and sends it until the two sides are completely consistent.

If it is determined that there is no eavesdropping, then the information can be transmitted using the feature code as the information encryption method, and the information is divided into countless small segments, and each small segment needs to be encrypted with a new feature code.

Therefore, quantum encrypted communication cannot be cracked, but the transmission medium is still the traditional way, and the upper limit of the speed of light cannot be broken.

Of course, the physics of the other world has not collapsed, and the quantum entanglement phenomenon is certainly still unable to convey the content, and the method of the scholar surnamed Zhang is to find another way, and this is related to another technology and a theory that the world line does not have.

The other world first vigorously studied the principle of quantum entanglement, and then came to the conclusion that the ultra-distance effect of quantum entanglement does not exceed the speed of light.

The reason why people look like it is faster than light is only because it exceeds the speed of light at 299792458 meters per second, and in higher dimensions, it is not faster than the speed of light.

In 1897, 11 dimensions were discovered in the other world, and it was found that the speed of light increased every time the dimension was raised, and the speed of light in the 11-dimensional space was close to infinity.

The ultra-distant effect of quantum entanglement is transmitted through high-dimensional space, so the path and medium cannot be observed in three-dimensional space, and the effect exceeds the speed of light.

Therefore, if a beam of signals can pass through the high-dimensional space connected between them when quantum entanglement occurs, then faster-than-light communication in reality can be realized.

So how to find the entrance to a high-dimensional space through a pair of entangled quanta? That would of course require a tool that can transcend dimensions: gravity.

Instead of detecting gravity, it is necessary to interfere with gravity, and when quantum entanglement occurs, it will also generate gravitational waves that are so weak that they cannot be detected, and use it to establish a medium with high-dimensional space, that is, to create gravitational waves.

Creating gravitational waves is an order of magnitude less difficult than creating gravity, but it's still out of reach for the base.

To emit a "wave", there must be a "string", a string that produces "noticeable" gravitational fluctuations when plucked.

This kind of material reality is still powerless, but Wu Yunfeng found that there is one thing that can: C172 methyl metal hydrogen battery.

Its core metal, hydrogen, is a degenerate substance, and the huge degenerate pressure can create an ultra-high-density environment in a small range.

Although it is still much weaker than neutron degenerate matter, it is enough to dial a quantum of light with almost no mass.

Different technologies from the two worlds have come together in a deliberate way, laying the foundation for delay-free synchronous communication in the low-tech era.

However, this is only to meet the most basic preparations, and the current research on gravitational waves is still almost blank, and the step from zero to one is the most difficult in scientific research.

Not to mention the removal of the metal hydrogen battery as a "string", in case of any accident, the loss is simply incalculable, and the relevant technology and principles must be partially understood before that.

Finally, Wu Yunfeng had a discussion with the newly recruited expert group, and finally believed that the most important breakthrough point is still gravity, and it is necessary to establish a gravitational-wave observatory with extremely high accuracy before it can have the conditions for basic research.

That's when they thought of the half-dead Lyra team and approved the idea of building a gravitational-wave observatory in space.

Compared with the more secluded space on Earth, especially to study metallic hydrogen samples, it must be highly confidential, coupled with the ease of construction, and finally it was agreed that it is more reasonable to be on the moon.

At this time, Lu Qun finally ushered in the dawn of hope, and officially understood the beginning and end of the quantum communication project team after a paper agreement.

This route confirms the need for gravity as a tool, and the path has been proven to be viable, which means that the Lyra project will be supported by at least Xinyuan.

Especially in terms of technology, relying on the Qianjun stick No. 3 project team, the base has stood at the forefront of the world in laser precision control, although there is still some gap from the requirements of the Tianqin plan, but as long as you work hard, it will be enough, and it is no longer unattainable.

"Professor Lu, Yun Feng and I have officially decided on the plan to establish an observatory on the moon, which is more accurate than the original Tianqin project, and it is not a conflict.

And this observatory project will also be included in our scientific research center schedule, and if it is actually completed, I estimate that it will be able to increase from B+ to A. ”

"Just call me the old way now...... I really didn't expect so many incredible things to happen, but...... I'll do my best, I can't wait to get to work right away. ”

Lu Qun seemed very excited, if only according to the field, the entire quantum communication project will become the world's most cutting-edge plan of known science, once successful, the benefits are unimaginable.

Especially in the field of gravitational waves, how can it not be gratifying that he will most likely become an important figure in this discipline after the discoverer?

"That's fine."

Ye Changsi was very satisfied with his attitude, and then looked at Wu Yunfeng:

"There should be a lot of communication between the high-energy institute and the quantum encryption communication team, right? We're going to have to dig up some people from there, and now that the future is clear, we should try to speed things up as much as possible. ”

Wu Yunfeng frowned slightly: "That's a key priority project of the country, and it's definitely no problem for the high-energy institute to be contacted, but I want them to take the time to come over and do it...... I'm afraid not, it's too sensitive.

Now that quantum encryption has been done almost fast, they can't put people there. ”

In the end, Wu Yunfeng had already shook his head decisively, that team was very applicable, and it was almost impossible to bring the quantum communication group closer to the base.

"Then dig from abroad."

Ye Changsi narrowed his eyes, and thought of those cutting-edge physicists who were beyond the age limit.

"There are still a lot of foreign talents, let them sign an agreement, and choose those who have a simpler family relationship and pay more attention to academics.

They're missing projects, aren't they? Our attraction is sufficient. ”

"But will this ......?"

"Extraordinary times, extraordinary means, hasn't the outside world always thought that we were poaching people from overseas? We just do things according to stereotypes. ”

(End of chapter)

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