Chapter 1188: This is the biggest misunderstanding of science

Maybe I know that my request is a bit embarrassing. Just as Director Li said this, the unconscious voice became smaller and smaller.
However, turning down the volume didn't make this embarrassing request sound more euphemistic, so he finally suffered a glance from Lu Zhou.
"What I said just now is to tell you the key to solving the problem, not to let you continue to ask me how to solve the problem!"
However, in the face of Lu Zhou's spit, Director Li not only did not have any introspection, but continued to say cheekily.
"This ... you have found the problem anyway, can't you just solve it?"
Looking at the embarrassed smile on Director Li's face, Lu Zhou could not help but have an illusion.
Does this guy treat himself as a tinkerbell?
No, it may not be an illusion.
Eight achievements are like this ...
...
With the phrase "I will think about it when I have time", I finally sent away Lu Zhou, Director Li, and saw that it was almost time, called Wang Peng and went straight to the parking lot.
Sitting in a black car, watching Wang Peng driving the car on the road with a steering wheel, Lu Zhou sitting in the back suddenly said.
"Wang Peng."
"what's up?"
Lu Zhou thought and said.
"In your opinion, what is science?"
Wang Peng was accustomed to Lu Zhou's occasional questions.
After thinking for a while, he said.
"I think it should be a way to solve the problem, which is probably similar to"
"Similar to letting water burn, letting air freeze, letting steel fly ... does that mean?"
Wang Peng thought for a while. Although he felt that this statement was a bit abstract, it seemed that there was nothing wrong with it, so he nodded.
"Roughly the same."
After hearing this expected answer, Lu Zhou sighed softly.
"So this is the biggest misunderstanding of science."
Wang Peng: "...?"
Lu Zhou: "Go to Jinling Advanced Institute."
Wang Peng looked at the car's endoscope and asked.
"Doesn't it matter at the three o'clock meeting?"
"I'll call Xuechen Yushan soon," Lu Zhou said after thinking, "the same goes for her."
...
Due to the interaction between the quantum communication system and the channel, the pure state coherence in the system will be attenuated, which will increase the randomness of the internal phase difference of each superposed component, resulting in the failure of quantum information transmission.
A more friendly solution is to add a repeater at a distance like traditional communication methods, amplify the attenuated signal and continue sending.
However, this method may sound easy, but it is difficult for quantum communication means. Because quantum communication is mainly based on the quantum effect of the single-photon spin state, the amplification optics will destroy qubits.
There are currently two types of relay technology, one is a trusted relay, and the other is a quantum relay.
The former is similar to key relay, allowing keys to be passed between trusted workstations. Relative to the latter, the technical difficulty is slightly lower, but the problem lies in the possibility of eavesdropping once the relay station is controlled by the hostile forces.
In other words, using this technical route, unconditional security is based on the premise that "workstations are trusted."
The latter, based on quantum entanglement distribution technology, establishes shared entanglement pairs between adjacent sites, stores the entangled pairs with quantum storage technology, and applies entanglement conversion operations to achieve shared entanglement between neighboring sites.
In terms of security, the latter is naturally unparalleled, but the price is that the technical difficulty is quite large, so large that it has no friends, and the academic community gave up around 2007.
Objectively speaking, if it is only for communication within the territory, for example, as a military special line, the use of trusted relay is completely sufficient. Just like the "Beijing-Shanghai Main Line" and the Mozi, under the protection of the People's Army, it is impossible to say that the workstations are "occupied".
However, when the communication range is expanded to the global scope, the security of overseas sites cannot be guaranteed with 100% trust, and the security of trusted relays remains to be discussed.
In the current era of information globalization, it is impossible for any country to leave the big collective of the Internet. Director Li is obviously not looking for the technology that can only be played behind closed doors.
Therefore, the key issue is how to solve the bottleneck of the quantum repeater.
At the Jinling Institute of Advanced Studies, Lu Zhou and Chen Yushan made a phone call, entrusted her with the afternoon meeting to process, edited an email, and sent the meeting outline to her mailbox.
The meeting mainly discussed the work arrangement of the Lunar Mass Accelerator project. In the case that he had already arranged the work in advance, he did not have to come in person.
In contrast, there are more important things waiting for him to do.
At the underground research institute, Lu Zhou went to the laboratory where he was studying the carbon-based quantum processor chip some time ago, looked at the carbon-based integrated circuit board enclosed in a transparent container, and said to himself.
"I originally planned to get the Earth Moon Control Project to study this topic."
"Well, try it anyway."
In speaking, Lu Zhou motioned to Xiao Ai to evacuate the inert gas in the transparent container, and released the combination lock. Wearing special gloves, he took out the well-preserved carbon-based integrated circuit board from the inside.
The difficulties of quantum repeaters can be divided into three parts, entanglement exchange, entanglement purification, and quantum storage.
The first two are okay. As for the last one, it is basically a problem in the same dimension as the quantum computer.
However, it is interesting to note that the research on quantum memory and quantum computers overlaps to some extent. The only difference is that quantum memory is almost essential for long-distance quantum communication, but not for quantum computers.
If you have, you can build a more advanced quantum computer. If not, you can choose a less advanced quantum computer ... the one that he himself DIY.
In fact, more than 80% of the reasons why Lu Zhou hasn't researched the technology of quantum memory for the time being is because of this layer of consideration.
In his original idea, with the breakthrough of quantum computer technology and its widespread use in the commercial field, capital will naturally push the quantum memory technology forward in search of building faster and more powerful quantum computers.
At that time, he does not need to exert too much effort, and he does not need to waste precious points at all. Naturally, he can get the quantum memory technology he expected.
"The 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 entanglement is destroyed at any time, such as when it collapses due to observations, the device can no longer function as a quantum memory, but instead becomes a 'entanglement interruption channel' and can only transmit classic information."
"It's a bit difficult ..."
Looking at the integrated circuit board lying on the experimental equipment ~ EbookFREE.me ~ Lu Zhou pondered for a long time.
It wasn't until the minute hand passed a large grid that he suddenly thought of something, and said.
"This is not a subject that one can accomplish."
"but……"
"I think it's not ordinary people."
Xiao Ai: [(?)]
Murmuring to himself, Lu Zhou, who was sitting at the experimental table, suddenly picked up the ball-point pen and wrote a line on the draft paper.
[Three-dimensional quantum memory]
Looking at the seven neatly printed characters on the paper, Lu Zhou nodded with satisfaction.
"Let's call this name for now!"