Perhaps Director Li knew that his request was a bit embarrassing, so his voice unconsciously became softer and softer.
However, lowering his voice didn't make his request sound more euphemistic. Therefore, he still received a glare from Lu Zhou.
"What I said just now was to tell you where the key to solving the problem is, not for you to continue to ask me how to solve the problem!"
However, faced with Lu Zhou's ridicule, Director Li didn't have any intention of reflecting on himself. Instead, he continued to speak shamelessly.
"Um … Since you 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.
Does this guy think I'm Doraemon?
No, maybe it's not an illusion.
It's most likely like this …
…
"I'll think about it when I have time". Lu Zhou saw that it was almost time, so he called Wang Peng and went straight to the parking lot.
He sat in a black car and watched as Wang Peng drove the car onto the road. Lu Zhou, who was sitting in the back seat, suddenly spoke.
"Wang Peng."
"What?"
Lu Zhou thought for a while and spoke.
"In your opinion, what is science?"
Wang Peng was used to Lu Zhou occasionally asking him some strange questions.
After thinking for a while, he spoke.
"I think it should be a way to solve the problem, it's probably similar to —
"Similar to burning water, solidifying air, and making steel fly … Is that what you mean?"
Wang Peng thought for a bit. Even though this statement was a bit abstract, it didn't seem wrong, so he nodded.
"Pretty much."
After hearing this expected answer, Lu Zhou sighed softly.
"That's why I said this is the biggest misunderstanding of science."
Wang Peng: "…?"
Lu Zhou: "Go to the Jinling Institute for Advanced Study."
Wang Peng looked into the mirror and asked.
"Is the three o 'clock meeting okay?"
"I'll call Su … Chen Yushan later." Lu Zhou thought about it and said, "It'll be the same if 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, which will increase the randomness of the phase difference of each superposition component and lead to the failure of quantum information transmission.
A more friendly solution would be to use traditional communication methods and add a repeater at a certain distance to amplify the attenuated signal and continue to transmit.
However, this method sounded easy, but for quantum communication methods, it was as difficult as ascending to the sky. Quantum communication was mainly based on the quantum effect of single-photon spin states, and magnifying optical devices would destroy qubits.
Currently, there were two types of relay technology. One was trusted relay, and the other was quantum relay.
The former was similar to a key relay, allowing keys to be passed between trusted workstations. Compared to the latter, the technical difficulty was slightly lower, but the problem was that once the relay station was controlled by hostile forces, there was a possibility of eavesdropping.
In other words, using this technical route, unconditional security was based on the premise of "trusted workstations".
The latter was based on quantum entanglement distribution technology, which established shared entanglement pairs between neighboring stations, stored the entanglement pairs using quantum storage technology, and used entanglement conversion operations to achieve shared entanglement between neighboring stations.
In terms of security, the latter was naturally unparalleled, but the price was that the technical difficulty was quite high. It was so high that the academic community gave up on it around 2007.
Objectively speaking, if it was only domestic communication, such as a military special line, using trusted relay was more than enough. Just like the "Beijing-Shanghai Trunk Line" and the Mozi, under the protection of the People's Army, it was impossible for the workstation to be "occupied".
However, when the communication range was expanded to a global scale, the security of foreign stations could not be 100% guaranteed. The security of trusted relay was questionable.
In the era of information globalization, no country could be separated from the Internet. Director Li obviously didn't want technology that could only be played with behind closed doors.
Therefore, the key to the problem was how to solve the bottleneck of the quantum repeater.
When Lu Zhou arrived at the Jinling Institute for Advanced Study, he called Chen Yushan and entrusted her with the afternoon meeting. He also wrote an email and sent the outline of the meeting to her email.
The main topic of the meeting was the work arrangements for the lunar mass accelerator project. Since he already arranged the work in advance, he didn't have to personally attend the meeting.
There were more important things waiting for him to do.
When Lu Zhou arrived at the underground research institute, he walked into the laboratory where he was researching carbon-based quantum processor chips. He looked at the carbon-based integrated circuit board sealed in a transparent container and spoke to himself.
"I originally planned on doing this research after the Earth and Moon project is done.
"Whatever, let's try it first."
Lu Zhou gestured to Xiao Ai to empty the transparent container of inert gas and unlock the password lock. He put on special gloves and took out the well-preserved carbon-based integrated circuit board.
The difficulties of the quantum repeater could be divided into three parts, entanglement exchange, entanglement purification, and quantum storage.
The first two were easy to solve, but the last one was basically in the same dimension as quantum computers.
However, what was interesting was that the research of quantum memory and quantum computers overlapped to some extent. The only difference was that quantum memory was essential for long-distance quantum communication, but it wasn't necessary for quantum computers.
If there was, he could build a more advanced quantum computer. If there wasn't, there was a less advanced quantum computer to choose from … Which was the one he made himself.
In fact, more than 80% of the reason why Lu Zhou didn't research quantum memory technology for the time being was because of this factor.
His original idea was that as quantum computer technology broke through and was widely used in the commercial field, capital would naturally push forward quantum memory technology, seeking to build faster and stronger quantum computers.
He didn't need to spend too much effort at all, and he wouldn't need to waste precious general points at all. He would naturally be able to obtain the quantum memory technology he wanted.
"The quantum entanglement between the system stored in the memory and any remote system not in the memory must be maintained for the entire 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 play the role of quantum memory. Instead, it will transform into an 'entanglement interrupt channel', which can only transmit classical information.
"This is a bit tricky …"
Lu Zhou looked at the integrated circuit board lying on the experimental equipment and pondered for a long time.
It wasn't until the minute hand passed that he suddenly thought of something and spoke.
"This is not a project that can be completed by one person.
"But …
"I don't think I'm an ordinary person."
Xiao Ai: [(??????)]
Lu Zhou muttered to himself as he sat in front of the experiment table. He suddenly picked up a ballpoint pen and wrote a line of words on a draft paper.
[Three-dimensional quantum memory]
Lu Zhou looked at the seven neat words on the paper and nodded with satisfaction.
"I'll call it this for now!"
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