Chapter 1189 This Is the Biggest Misunderstanding of Science
Perhaps because he knew that his request was embarrassing, as soon as Director Li said this, his voice became smaller and smaller unconsciously.
However, turning down the volume could not make this embarrassing request sound more tactful, so he finally got Lu Zhou's eyes.
"What I said just now is to tell you where the key to solving the problem is, not for you to keep asking me how to solve the problem!"
However, in the face of Lu Zhou's complaints, Director Li not only did not have any intention of introspection, but continued with a cheeky face.
"This... Anyway, you have found the problem, why don't you just solve it?"
Looking at the embarrassed smile on Director Li's face, Lu Zhou couldn't help but have an illusion.
Did this guy think of himself as Tinker Bell?
No, it might not be an illusion.
Eighth success is like this...
...
With the sentence "I will think about it when I have time", I finally sent Director Li away. Seeing that the time was almost up, Lu Zhou called Wang Peng, and then went straight to the parking lot.
Sitting in a black car, watching Wang Peng turn the steering wheel and drive the car onto the road, Lu Zhou sitting in the back row suddenly said.
"Wang Peng."
"What's up?"
Lu Zhou thought for a while before speaking.
"In your opinion, what is science?"
Wang Peng is used to Lu Zhou occasionally asking himself some strange questions.
After thinking about it for a while, he spoke.
"I think it should be the way to solve the problem, which is probably similar to—"
"Similar to making water burn, making air freeze, making steel fly...does that mean?"
Wang Peng thought about it, and although he felt that this statement was a bit abstract, he felt that there was nothing wrong with it, so he nodded.
"Roughly the same."
Hearing this expected answer, Lu Zhou sighed softly.
"So, it's the biggest misunderstanding of science."
Wang Peng: "...?"
Lu Zhou: "Go to Jinling Institute for Advanced Study."
Wang Peng glanced at the car interior mirror and asked.
"Is the meeting at three o'clock all right?"
"I'll make a phone call to Xue-Chen Yushan later," Lu Zhou thought for a while and said, "It's the same when she goes."
...
Due to the interaction between the quantum communication system and the channel, the coherence of the pure state in the system will be attenuated, so that the randomness of the internal phase difference of each superposition component will increase, resulting in the failure of quantum information transmission.
A more friendly solution is to add a repeater at a distance to amplify the attenuated signal and continue sending it, just like traditional communication methods.
However, this method sounds easy, but it is extremely difficult for quantum communication methods. Because quantum communication is primarily based on the quantum effects of single-photon spin states, amplifying optics would destroy qubits.
At present, there are two types of relay technology, one is trusted relay, and the other is quantum relay.
The former is similar to key relay, allowing keys to be passed between workstations that can be trusted. Compared with the latter, the technical difficulty is slightly lower, but the problem is that once the relay station is controlled by hostile forces, there is the possibility of eavesdropping.
In other words, if this technical route is adopted, unconditional security is based on the premise of "credible workstation".
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 realize shared entanglement between adjacent sites.
In terms of security, the latter is naturally unparalleled, but the price is that the technology is quite difficult, so big that it has no friends, and the academic circle gave up around 2007.
Objectively speaking, if it is only for communication within the territory, such as a military-industrial dedicated line, it is sufficient to use a trusted relay. 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 workstation is "occupied".
However, when the communication scope expands to a global scale, the security of overseas sites cannot be guaranteed 100% credible, and the security of trusted relays is open to question.
In the current era of information globalization, it is impossible for any country to be separated from the Internet. What Director Li expects is obviously not the kind of technology that can only be played behind closed doors.
Therefore, the crux of the problem is how to solve the bottleneck of the quantum repeater.
When he came to Jinling Institute for Advanced Study, Lu Zhou made a phone call with Chen Yushan, entrusted her with the afternoon meeting, edited an email, and sent the meeting outline to her mailbox.
The meeting mainly discussed the work arrangement of the Lunar Surface Mass Accelerator project. Since he had already arranged the work in advance, he didn't have to come forward in person.
In contrast, there are more important things waiting for him to do.
Coming to the underground research institute, Lu Zhou walked to the laboratory where he studied carbon-based quantum processor chips some time ago, looked at the carbon-based integrated circuit board packaged in a transparent container, and said to himself.
"I originally planned to finish the Earth-Moon Control project and then study this topic."
"Forget it, anyway, let's try first and then talk."
As he spoke, Lu Zhou signaled Xiao Ai to evacuate the inert gas in the transparent container, unlock the combination lock, and put on special gloves to take out the well-preserved carbon-based integrated circuit board from inside.
The difficulty of quantum repeater 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 quantum computers.
But what is interesting is that the research of quantum memory and quantum computer 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 there is, a more advanced quantum computer can be built, if not, there is also a less advanced quantum computer to choose...that is, the one he DIYed.
In fact, more than 80% of the reasons why Lu Zhou did not study the technology of quantum memory for the time being are also due to this factor.
In his original idea, as quantum computer technology breaks through and is widely used in the commercial field, capital will naturally push quantum memory technology forward to seek to build faster and more powerful quantum computers.
At that time, he doesn't need to spend too much effort, and he doesn't need to waste precious points at all. He can get the quantum memory technology he expects naturally.
"Quantum entanglement between a system stored in memory and any remote system not in memory must be maintained throughout the storage time..."
"If this entanglement is destroyed at any time, such as collapse due to observation, then the device will no longer be able to function as a quantum memory, but will transform into an 'entanglement interruption channel', which can only transmit classical information."
"It's a bit difficult..."
Looking at the integrated circuit board lying on the experimental equipment, Lu Zhou pondered for a long time.
It wasn't until the minute hand passed a big mark that he suddenly thought of something and said.
"This is not a task that one person can complete."
"but……"
"I don't seem to be an ordinary person."
Xiaoai: [(?)]
Muttering to himself, Lu Zhou, who was sitting in front of the experiment table, suddenly picked up a ballpoint pen and wrote a line on the draft paper.
【Three-dimensional quantum memory】
Looking at the seven neat characters on the paper, Lu Zhou nodded in satisfaction.
"Just call it that name for now!"