Quantum communication, neutrino communication?

Everyone present was a little surprised: "Have these technologies already achieved breakthroughs?"

What we are talking about now is reservation, which proves that it has not been successful yet, but since space has been reserved, it means that there has been a breakthrough, and everyone can see the relevant progress.

"Dear leaders, let's introduce it first. After the introduction, there will be a question and answer session." Qin Tao said.

Wu Shengli shook his head: "Let's introduce these. You see, everyone is itchy, and I'm afraid they won't be able to hear what's going on in their hearts."

"Okay. Let me give you a brief introduction." Qin Tao said: "The first is quantum communication, which is considered to be the most promising way for submarine communication. Not long ago, our domestic experts from Huating Jiaotong University have completed

conducted the world's first seawater quantum communication experiment. In this experiment, they observed that photon polarization quantum states and quantum entanglement can maintain quantum properties in high-loss and high-scattering seawater, which provides us with underwater communications.

With perfect technical support, although it is still at a certain stage before practical use, it has already shown good prospects."

"What is quantum entanglement?" one leader asked.

After all, this is cutting-edge technology, and many people have never heard of it.

"Although I am a college student, I have not studied much quantum theory, and I personally cannot understand it. However, this is something that actually exists." Qin Tao said: "Microscopic particles have some unique motion states, such as

Talk about panning, turning in circles, or rhythmic shaking, etc."

This is actually not very scientific terminology, but in order for everyone present to understand, Qin Tao must try to be as straightforward as possible.

"The so-called quantum entanglement means that there are two particles in this unique state. Whatever movement one of the particles makes, the other particle will follow it, regardless of the distance or what is between them, such as air.

Or the sea water, or even the entire earth or the universe. It's like two twins with telepathy. Whatever one dreams, the other will also dream."

"Twins are not so magical," a leader said.

"Yes, no one knows what the quantum entanglement phenomenon is. This phenomenon has been observed by microphysicists for a long time, and there is no reasonable explanation now. Therefore, some theories attribute this quantum entanglement effect to God.

the power of."

There are many theories, such as that there is a wormhole connected between the two, but no one knows about this mysterious thing, and it cannot be explained by current physics.

"So, how can this thing be used for communication?"

"Two microscopic particles, in a state of quantum entanglement, will do the same thing no matter how far apart they are. Therefore, we can place one particle each at the place where information needs to be emitted and the place where information needs to be received. In this way, if we need to send

Information can be controlled by using an electromagnetic field to control the movement of one of the particles. The particle at the other end will do the same movement under the effect of quantum entanglement. We encode this movement and decode it at the other end to know the information sent.

What is it?"

All the leaders present shook their heads.

"Don't you understand yet?"

"We understand, but we can't understand!"

"Yeah, I thought of a science fiction novel called "Ender's Game". There is a kind of Ansible communication technology that can exceed the speed of light and does not have any time delay. Listen to what you said, this kind of quantum communication

Technology is very similar to this. If we stimulate the quanta here in the Milky Way, the quanta on the other side of the Andromeda Nebula will respond simultaneously."

They roughly understood it, but they didn’t understand it. Isn’t this amazing?

"Yeah, it's normal not to understand it. I don't understand it either, but it doesn't affect our use."

Qin Tao didn't intend to waste too much time. Even scientists can't understand it. You people still want to understand it?

"It is precisely because quantum entanglement is not affected by space and time that it provides us with a perfect means of submarine communication. We place the two ends of quantum communication at the land headquarters and the submarine respectively, so that wireless communication can be achieved.

Delayed, barrier-free communication. Not only can it communicate at any time, but it can also not be eavesdropped. After all, it does not emit any signals and relies entirely on quantum entanglement to achieve data transmission."

For submarines, quantum communication is very suitable.

In Qin Tao's original time and space, the ocean-going scientific research vessel Science had achieved real-time transmission of data from a 6,000-meter deep-sea submersible to Beidou satellites in 2018. The specific technical principles have not been announced, but the outside world can guess,

Nothing but quantum communication.

And a few years ago, China launched a quantum communication satellite.

Of course, the first quantum communication satellite launched was not a complete quantum communication. Instead, the secret key was first transmitted through quantum communication, that is, the two parties communicated and shook hands. Subsequent communication was still conducted through electromagnetic waves. This has already taken a step forward.

A very crucial step to be at the forefront of the world.

"According to our expectations, this kind of quantum communication will mature within ten years. By then, our 096 will definitely not be retired yet, so we have reserved this device. According to expected estimates, the initial quantum communication transmission speed

It is 72 kilobits of data per second, which is equivalent to 4,600 characters per second. It cannot be compared with our 100 Mbit or Gigabit network. It can only transmit text, not video signals. However, it is still used to transmit ballistic missile launch missions.

no problem."

Attack nuclear submarines only need to communicate with the outside world when they are stationary, and they cruise covertly at other times. However, ballistic missile nuclear submarines are different. If they wander alone in the ocean at ordinary times, they need to report to their superiors every once in a while that they are safe.

It may be normal this time, but when we come up next time, no one on the land will respond, and we will suffer a nuclear attack!

This chapter is not finished yet, please click the next page to continue reading the exciting content! Ballistic missile nuclear submarines must receive news from their superiors at any time. When the motherland is attacked by a nuclear attack, they must accept the mission of their superiors and launch a nuclear counterattack, so that they can maintain the second

The power of nuclear strike. Only with this ability, the enemy will give up launching a nuclear strike first.

Therefore, this kind of nuclear submarine needs real-time communication most!

"Okay, let me introduce you to the second type, neutrino communication. Neutrinos are uncharged elementary particles with a mass much smaller than neutrons. They move at a speed close to the speed of light and have extremely strong penetrating power.

,So, we can emit neutrinos through satellites in space, and directly send neutrino beams to submarines in seawater, so that we can obtain a good communication method."

This method is also a future communication method for submarines, but Qin Tao did not see it mature until he was reborn, so it is not clear. In comparison, he is more inclined to quantum communication. However, the neutrino communication method

All countries are studying it, and of course we cannot lag behind.

"Okay, now let's return the microphone to our designer and ask him to continue introducing our submarine." Qin Tao said.

After introducing the control tower, we now have the front part of the submarine.

"We have a large spherical sonar in the front, which occupies almost the entire front space. Therefore, our torpedo launch tubes are arranged behind the bow sonar, so that the launch tubes are placed at an angle and point to the left and right front sides." Kvasa continued.

introduce.

This is also very different from submarines in the past!

Previous submarines used the traditional Russian layout. Eight torpedo launch tubes were usually arranged on the upper level of the bow, and the lower half was used for a cylindrical sonar array.

This arrangement gives the torpedo tube the best firing range, allowing the torpedo to be launched better. At the same time, the hoisting of the torpedo is also very convenient. You can see some photos of the shore, open the launch tube above, and insert the torpedo

go.

In the floating state, the torpedo launch tube must be above the water surface to facilitate the hoisting of the torpedo.

However, this design is not the most perfect, because the torpedo launch tube is above the sonar array, so it is impossible to detect the water sound above!

The layout of American nuclear submarines is not like this. Generally, a huge spherical sonar array is placed at the bow. This will occupy the entire bow space, and the torpedo launch tube will be squeezed to the rear. This arrangement can completely sense the above

The disadvantage is that the torpedo cabin is squeezed into space.

The specific choice depends on the purpose of the submarine.

If you are attacking a nuclear submarine, you must ensure the launch of torpedoes.

Eight torpedo tubes are arranged on the bow of the boat, which is very convenient to launch, even in the face of a group fight. If a saturation attack is needed, eight submarine-launched anti-ship missiles can be stuffed into the launch tubes, which is very powerful.

Therefore, this layout can be adopted, and it has always been this layout in China.

However, if it is on a strategic missile nuclear submarine, this layout can be changed.

Strategic missile nuclear submarines do not search for enemy nuclear submarines underwater and launch attacks at any time. The mission of this type of nuclear submarine is to lurk in the depths of the ocean, launch ballistic missiles at any time, and launch strategic nuclear strikes against the enemy. This type of nuclear submarine does not require and

The enemy fights with bayonets, and silence is his greatest weapon.

Therefore, this kind of nuclear submarine needs the best search capabilities.

Domestic nuclear submarines now have advanced sonar equipment. In addition to towed array sonar, there are also sonar arrays on both sides of the hull to detect distant ships. However, because they are installed on the side, they are not sensitive to both sides.

The effect is the best, but the effect on the front is unsatisfactory, which requires the leakage correction of the front sonar array.

As for the frontal sonar array, the spherical shape can detect the entire surface, while the cylindrical shape can only detect the lower part.

Therefore, this change is also to improve the submarine's underwater perception and thereby improve its underwater survivability.

"After this design, the entire bow part of our boat will be fully immersed in seawater after entering the water, and the blind area above the front will be perfectly detected." Kvasa continued.

Sonar is immersed in the water and can be heard only when it is integrated with the sea water. Whether it is the bow sonar ball of a surface ship or an underwater submarine, all sonar must be in direct contact with the sea water. If there is an air layer in between

, which will block all weak sounds.

In the past, only the bottom of the bow of the submarine was filled with seawater, but now the entire bow has to be immersed in seawater.

It looks a little unique.

"Our submarine design is gradually moving closer to the West," said a leader.

"Yes, of course we must absorb advanced technology. There are good things in foreign countries, and of course we must learn from them. We should take the essence and discard the dross, and we cannot rest on our laurels."

The huge sphere at the bow of the boat is almost four times the area of ​​the original cylindrical array. Of course, the detection range brought about by this is also rapidly expanded. In recent years, domestic related technologies have developed rapidly to create such a big thing.

Only advanced computer technology can process this data. In the past, it would have been impossible to achieve these functions.

"After this design, how to install the torpedo?" the leader continued to ask.

In the past, as long as the torpedo tube was docked at the dock, the torpedo tube could be opened and the torpedo inserted from the launch tube. However, with this design, the torpedo tube is underwater and it is impossible to use the original method.

Even if the ballast water tank at the stern of the boat is filled and the bow of the boat is raised, the torpedo tube is still underwater.

"We designed a special torpedo loading port on the submarine." Kvasa continued.
To be continued...