Chapter 1188

Perhaps it is to know that his request is a bit embarrassing. As soon as director Li said this, his voice became smaller and smaller unconsciously.

However, turning down the volume didn't make the embarrassing request sound more euphemistic, so he finally got a slap in the face from the boat.

"What I said just now is to tell you the key to solve the problem, not to let you continue to ask me how to solve the problem!"

however, in the face of Lu Zhou's Tucao, Lee didn't have any introspection, but he was bold enough to make complaints about it.

"This Anyway, you have found all the problems. Can't you just solve them? "

Looking at the embarrassed smile on Mr. Li's face, Lu Zhou could not help but have an illusion.

Does this guy treat himself like a tinker.

No, it may not be an illusion.

It's probably like this

……

"I'll think about it when I'm free" finally sent director Li away. After meeting Lu Zhou, who was about the same time, he called Wang Peng and headed straight to the parking lot.

Sitting in a black car, watching Wang Peng steering the car onto the road, sat in the back of the boat suddenly said.

"Wang Peng."

"What is it?"

Lu Zhou thought and said.

"What is science to you?"

Wang Peng is also used to the strange questions that Lu Zhou occasionally asks himself.

After some serious thought, he said.

"I think it should be the way to solve the problem, which is similar to --"

"it is similar to making water burn, air solidify, and steel fly Is that what it means? "

Wang Peng thought about it. Although he thought it was a little abstract, he thought there was nothing wrong with it, so he nodded.

"Almost."

Hearing the unexpected answer, Lu Zhou sighed softly.

"So that's the biggest misunderstanding of science."

Wang Peng: "...?"

Lu Zhou: "go to Jinling Institute of higher learning."

Wang Peng looked at the eyecar endoscope and asked.

"Doesn't the three o'clock meeting matter?"

"I'll call Chen Yushan later," Lu Zhou thought for a moment. "It's the same with her."

……

Because of the interaction between the quantum communication system and the channel, the coherence of the pure state in the system will be weakened, which will increase the randomness of the internal phase difference of each superposition component, leading to the failure of quantum information transmission.

A friendly solution is to add a repeater at a distance to the traditional means of communication, amplifying the attenuated signal and sending it on.

However, this method may sound easy, but for quantum communication means, it is difficult. Because quantum communication is mainly based on the quantum effect of single photon spin state, and amplification optical devices will destroy the quantum bits.

At present, there are two kinds of relay technology, one is trusted relay, the other is quantum relay.

The former is similar to key relay, which allows the key to be passed between trusted workstations. Compared with the latter, the technical difficulty is slightly lower, but the problem is that once the relay station is controlled by the hostile forces, there is the possibility of eavesdropping.

In other words, with this technology, unconditional security is based on the premise of "workstation credibility".

The latter, based on the quantum entanglement distribution technology, establishes a shared entanglement pair between adjacent sites, stores the entanglement pair with the quantum storage technology, and uses the entanglement conversion operation to realize the shared entanglement between adjacent sites.

In terms of security, the latter is unparalleled, but the cost is that the technology is quite difficult, as big as the unfriendly one, which was abandoned by academia around 2007.

Objectively speaking, if it is only the communication within the territory, for example, as a military industrial special line, the use of reliable relay is sufficient. Just like the "Beijing Shanghai trunk line" and the Mozi, under the protection of the people's army, it is impossible to say that the workstation is "occupied".

However, when the communication scope is expanded to the global scope, the security of overseas sites can not be guaranteed 100 percent, so the security of trusted relay needs to be discussed.

In the current era of information globalization, no country can be separated from the Internet, which is a big collective. Li Bureau's long-term vision is obviously not the kind of technology that can only close the door and play by itself.

Therefore, the key to the problem is how to solve the bottleneck of quantum repeater.

When I came to Jinling Institute of higher learning, Lu Zhou and Chen Yushan made a phone call, entrusted her with the afternoon meeting, edited an email and sent the outline of the meeting to her email.

The meeting mainly discusses the work arrangement of the lunar surface quality accelerator project. When he has arranged the work in advance, he does not have to appear in person.

In contrast, there are more important things waiting for him to do.When he came to the underground research institute, Lu Zhou went to the lab where he studied the carbon based quantum processor chip some time ago, and looked at the carbon based integrated circuit board enclosed in a transparent container, and said to himself.

"I had planned to finish the Earth Moon control project before studying this subject."

"Well, let's try it first."

As he spoke, Lu Zhou signaled AI to empty the inert gas in the transparent container, release the password lock, and put on special gloves to take the well preserved carbon based integrated circuit board out of it.

The difficulties of quantum repeater can be divided into three parts: entanglement exchange, entanglement purification, and quantum storage.

As for the last one, it is basically a problem in the same dimension as quantum computer.

Interestingly, however, there is some overlap between quantum memory and quantum computer. The only difference is that quantum memory is almost essential for long-distance quantum communication, but not just for quantum computers.

Some can make more advanced quantum computers. If not, there are less advanced quantum computers to choose from That's the one he DIY came out of.

In fact, more than 80% of the reasons why the land boat did not study the technology of quantum memory at present are due to this factor.

In his original idea, with the breakthrough of quantum computer technology and its wide application in the commercial field, capital will naturally push forward the quantum memory technology to seek for a faster and more powerful quantum computer.

At that time, he doesn't need to spend too much effort or waste precious integrals, so he can naturally get the quantum memory technology he expected.

"Quantum entanglement between a system stored in memory and any remote system not in memory must be maintained for the entire storage time..."

"If this kind of entanglement is destroyed at any time, such as due to observation, then the device can no longer play the role of quantum memory, but degenerates into" entanglement interrupt channel ", which can only transmit classical information."

"It's a little difficult..."

Looking at the integrated circuit board lying on the experimental equipment, Lu Zhou pondered for a long time.

It was not until the minute hand passed a big space that he suddenly thought of something, and said.

"This is not a subject that one can accomplish."

"But..."

"I don't seem to be a normal person."

AI: [(? I murmured to myself,

I took up the ballpoint pen and wrote a line of words on the draft paper in the boat sitting in front of the experimental table.

Looking at the seven neat characters on the paper, Lu Zhou nodded with satisfaction.

"Let's call it that for now!"