Huaguo has achieved 100 kilometers of quantum direct distribution in the field of optical fiber and cable in quantum encryption technology, and it is of practical value.

In the field of wireless, many attempts have also been made.

In 22 years, Huaguo Aerospace successfully launched the world's first quantum science experiment satellite 'Micius', and through the Micius satellite, it launched the entangled quantum to the Deharing and Dayan Observatory on the ground, and carried out a 1,200-kilometer remote quantum state transmission experiment on the ground.

The hosts of these two experiments are Pan Jianwei's team from the Luzhou Microscopic Matter Research Center.

In terms of satellite wireless communication, based on the 'quantum teleportation' scheme of two-photon path-polarization hybrid entangled states, they solved the influence of photons on atmospheric turbulence during the propagation of atmospheric channels, and successfully verified six typical quantum states to improve the transmission fidelity of entangled quantum.

But because the quantum carrier is still a radio wave after all, it is very susceptible to environmental interference.

Coupled with the observation collapse of quantum, the quantum is very 'fragile', even if the stealth scheme is used, the fidelity of this wireless key distribution is still very far from the actual application.

This time, Kangchi directly increased the distance of this test to more than 4,000 kilometers.

If this experiment can be successful, it should not be a problem to extend the distance to Mars and Earth.

After all, this is quantum communication in the real sense, which is based on the entanglement relationship between two quanta at higher latitudes, and the transmission of information does not need to rely on any carrier in the real world, let alone be interfered by factors in reality.

If you want to interfere with quantum communication, you have to interfere with high-dimensional space.

But this kind of ability, even the Kangchi that can open the hanging, can't do it!

At least, not now.

Unless even the slightest theoretical basis emerges later.

……

Although Cai Yaobin does not understand the specific technical details, through the distance of this experiment, you can roughly guess how important it is.

It should be similar to launching a quantum experiment satellite, right?

In addition, Kangchi had to personally preside over the experiment, so Cai Yaobin did not dare to be careless at all, and directly called the leaders of the southern and northern theaters, explained the situation to them, and hoped that they could cooperate with the experiment.

In fact, the two leaders had just met Kangchi in Xifei two days ago, and after they came back, they even dreamed of the spectacular scene of the Y-20S prototype taking off on the field runway, so after hearing that it was his experiment, they immediately attached great importance to it.

Two hours later, one Y-20 and two J-20 took the lead in landing at Pangu Airport.

This will be Kangchi is still packing experimental equipment with Yan Hui and others,

After more than an hour, when they packed the equipment and held a meeting with Yan Hui to explain the use of these equipment and the specific process of the experiment, the plane in the Northern Theater finally arrived.

They were a little farther away, and they also came with two fighters and a transport plane.

Mainly, they didn't know whether Kangchi was going to Sansha or Mohe, so they simply arranged escort fighters......

When Kangchi led people to drive the equipment out of the Pangu base and saw a row of military planes parked at the airport, he couldn't help but be slightly stunned.

As for Yan Hui, he was even more confused, and after a while, he said with a little weakness: "This posture ...... How does it feel like you're going to take us to war? ”

"You think too much, why don't you need our body to fight, do you understand this escort?" Kangchi is very satisfied with this, "Sure enough, Mr. Cai is more reliable and full of security!" ”

Chen Hai: "......"

How do you feel that you have become more and more like a dispensable mascot lately?

……

Among the two test sites, Kangchi did not hesitate to choose Sansha.

The main thing is that the Mohe River in April is still a little cold, go there to be frozen, how can you go to Sansha to see the sea, and cultivate your sentiment to be fragrant?

So the glorious and arduous task of Mohe was handed over to Yan Hui to be responsible.

Ten minutes later, six planes began to take off one after another.

After a two-hour flight, the plane successfully landed at Woody Airport.

As soon as he got off the plane, Kangchi felt a heat wave hit, and the air was filled with a light salty smell of sea.

Shu Jinchuan, an officer of the Yongxing garrison, immediately saluted when he saw Kang Chi leading people down: "Dr. Kang, welcome to Sansha!" ”

After saluting, he shook hands with Kang Chi again, and said with a smile: "I'm Major Shu, if Dr. Kang needs to cooperate, just tell me." ”

"Hmm...... This experiment is actually very simple, you can just find a room and put the equipment for us. ”

"Roger!"

So Kang Chi and his three experimental assistants, with the help of five soldiers, quickly loaded the experimental equipment on the transport plane into the pickup truck, and then moved it to an empty warehouse with the convoy.

In the process of installing and debugging the equipment, Kangchi received a call from Cai Yaobin again.

"You've already arrived in Sansha?"

"Well, it wasn't long before I arrived."

"Can you wait for us? We'll be there in an hour! ”

"We?"

"Mr. Ren heard that there is progress on your side, and I want to come and take a look."

"Oh, I see, it's okay, you don't have to worry, Yan Hui probably hasn't arrived yet."

"Well, that's good!"

After hanging up the phone, the experimental device was almost debugged, Kang Chi carefully checked it again, and after confirming that there was no problem, he asked Major Shu to take them around the neighborhood.

Although Sansha is a city, the area of the main island is actually very small, most of it is reclaimed and expanded, and you can see the beach and the sea just a few steps away.

I have to say that the sky and sea here are really blue, as if adding a layer of filters, which makes people feel relaxed and energetic at first glance.

However, the sun is also really poisonous, Kangchi was sunburned for less than ten minutes, and he felt that his skin was a little hot, so he hurriedly went back to the temporary laboratory, and then as soon as he entered with his front foot, he heard the sound of the engine of an airplane in the sky.

Sure enough, it didn't take long for Cai Yaobin and Ren Zhou to enter the temporary laboratory under the leadership of several soldiers, and after a brief greeting between the two sides, Ren Zhou couldn't help but ask Kang Chi: "Did you really find that hidden variable?" ”

Kangchi nodded, and then shook his head again: "I just determined that this hidden variable exists, but how it affects the quantum entangled state is still unknown." ”

Kangchi briefly explained his previous high-dimensional conjecture with the example of the island and the sea.

"On the quantum trap of this experimental device, there are two more elemental decay devices, they are like the two hands of the fisherman, when the fisherman sees the undulating sea, revealing a fin, he immediately slaps both sides of the fin, and the mass is converted into energy, so the water level drops again, and a complete fish appears, and the next thing we have to do is to go through the net and really catch the fish."

Cai Yaobin suddenly wondered: "Why doesn't the fisherman use a net and just catch the fish?" ”

"Mr. Kang just gave a more vivid and easy-to-understand example."

Ren Zhou immediately helped Kang Chi and explained to this layman who was more layman than him,

"The rules of the higher dimensions, we can't understand at all, although the two worlds may blend with each other, and even use energy to affect the junction, but in the final analysis, both sides are in a world with completely different rules."

"If we take Mr. Kang's example as an example, the fisherman's net bag is a material that melts when it encounters water, just like we can't enter the high-dimensional space."

After Ren Zhou finished speaking, he turned his head to look at Kang Chi: "I don't know if my understanding is wrong?" ”

Kangchi nodded: "That's pretty much it. ”

Cai Yaobin suddenly realized: "I understand this explanation, but how to do it, at the moment when the entangled quantum is emitted, two photons are emitted at the same time?" And impartially, just 'passing by' this entangled quantum, and at the same time forcing out the real entangled quantum? ”

In fact, Ren Zhou also thought of this problem just now,

But I don't feel like I can think about it at all......

Because it's terrifying.

Don't look at the Kangchi set of equipment here, it seems to be ordinary, but this thing is definitely an ultra-precision instrument that is more difficult to build than a lithography machine.

In a sense, the whole set of equipment is a miniature particle collider.

It's just that instead of allowing particles to collide directly, it causes dimensional oscillations around the quantum through the strong force between multiple waves, thus creating some kind of new quanta.

It has to be collided, but it can't really be collided, and the volume of the whole device is still so small......

This kind of multi-particle equipment that accurately stirs the dimension, and the difficulty of manufacturing makes Ren Zhou's scalp tingle just thinking about it!

He couldn't imagine how Kangchi was made anyway......

It is estimated that even if Kangchi told him, he wouldn't understand, so he simply didn't ask.

So Kang Chi and Ren Zhou both tacitly ignored Cai Yaobin and skipped this topic......

(End of chapter)