Chapter 312: Foreigners can do it, but we can’t? (33, more)
The following afternoon,
Several people from the army suddenly came to the office building of the Physics Department of Fudan University, which caused a lot of speculation in the school. As a result, the rumor spread that there was a spy in Fudan University and the people from the army came to catch the spy, but in fact they came to find Chen Xiaoxin.

The leader was a deputy regiment commander at the lieutenant colonel level. He brought his men to the door of Chen Xiaoxin's office, knocked on the door gently, and with a "come in" message, the men walked in.

"Professor Chen."

"I'm entrusted by my leader to come to your place to get some information." When the deputy head of the regiment faced Chen Xiaoxin, he was very respectful. It was obvious that he knew Chen Xiaoxin's identity and background. After all, Yan Xiaoxi's grandparents were almost all in the army, and their ranks were quite high. Even a semi-scientific researcher like my aunt was at the colonel level.

"Hello Hello."

Chen Xiaoxin didn't expect it to arrive so soon. He called Academician Ma at 10 a.m. and someone was sent to pick it up at 2 p.m. This team is really efficient.

"Sit, sit, sit."

Chen Xiaoxin hurriedly asked a few people to sit down, and then began to make tea for them. While making tea, he said, "There are some things I need to remind you of, so take your time."

When the tea was handed to the deputy head, he suddenly stood up and respectfully took the cup, which frightened Chen Xiaoxin. He looked at a loss and asked cautiously, "Do you know me?"

"The leader told me about it." The deputy head of the group said with a smile.

"Oh"

Chen Xiaoxin probably guessed who said that, and was not surprised. He then handed two glasses of water to the other two soldiers, then returned to his seat, took out a file bag from the drawer, and said to the deputy head of the regiment: "According to Academician Ma, this is a top-secret document, but I don't have a seal or anything. You should bring it with you, right?"

"Bring it!"

The deputy head nodded.

Then a young man present began the process of encrypting the file bag, such as stamping the file bag with the official seal, and then signing a confirmation of the content of the file. In short, the whole process is very complicated. Of course, for files of this level, every step of the process requires the confidentiality of the content.

After you finish
The delivery of this file bag has been completed, and all that remains is for it to be delivered to Academician Ma in Beijing.

"Professor Chen."

"Then we're leaving."

After receiving this top-secret document, the deputy head of the group stood up and said to Chen Xiaoxin.

"Oh oh oh"

Chen Xiaoxin also stood up and sent them out of his office. He accompanied them downstairs and watched them get in the car and leave. When he returned to the office, Director Xiao Wu from the Physics Department heard the inquiry and hurriedly found him.

"Xiao Chen?"

"The army is looking for you? Did you do something wrong?" Director Wu asked anxiously.

"How can it be"

"I have cooperated with Academician Ma's team. Today, I handed over the relevant research materials to them. Academician Ma was worried about the email, so he personally sent someone to pick it up." Chen Xiaoxin explained: "As for what the content is, I can't say, it's a state secret document."

Upon hearing this, Director Wu immediately breathed a sigh of relief. Just now, he heard that the army was looking for Chen Xiaoxin, and he thought that Chen Xiaoxin was going to be arrested. He was so scared that he didn't know what to do.

"That's good"

"I thought you had committed a crime and would be arrested and sentenced." Director Wu breathed a sigh of relief and said with a smile.

Chen Xiaoxin was speechless, but it also sounded a wake-up call for him. As he was exposed to more and more fields, knew more and more things, and produced more and more research results, he was bound to be targeted by certain foreign forces. He had to be careful of the people around him. Especially in universities, where people were frequently subverted, it was possible that a professor was a running dog.

另外
You can't go abroad casually. You probably need to apply to the higher authorities.

After being exposed to more and more national projects, Chen Xiaoxin has actually been restricted from going abroad. This is out of consideration for his life safety, but of course it is not a complete restriction. As long as he reports to the higher-ups, the authorities will negotiate with the other party and ask them to guarantee his life safety.

It sounds exaggerated but it is actually true, because such examples have occurred many times. For example, a mathematics expert died mysteriously in Chicago more than ten years ago. Another example is that a plane suddenly crashed, and among the passengers were several Chinese who were top scientists in the field of nuclear power.

"correct."

"The Young Elite Scientists Foundation asked you whether you wanted to apply for mathematics or physics, and in the end you two were given physics," Director Xiao Wu said, "and then we collaborated."

"Ah."

“I have already written the relevant topics.”

Chen Xiaoxin took out another project plan from the drawer, handed it to Director Xiao Wu who was sitting opposite him, and said, "It's about the topological state and fractionalization of quantum systems. Finding the ground state of a strictly solvable model. In addition, you need to help me coordinate the relevant experimental equipment. I need to use it as a priority." "No problem!"

Director Xiao Wu smiled and said, "You currently have the highest level of authority in the Physics Department. Everything will be based on your priority."

"Does anyone else have any objections?" Chen Xiaoxin asked.

"Opinion?"

"What's your opinion?"

"You are the pillar of Fudan University, the face of Fudan University. Who dares to have any objection? Even if an academician comes, he will give up his seat to you." Director Xiao Wu said earnestly: "Xiao Chen, your status is much higher than you think! The president wants to give up his seat to you."

"No, no, no."

"I just want to be a top student quietly." Chen Xiaoxin said helplessly.

In the following time, Director Wu chatted with Chen Xiaoxin for a while and then left the office. Then Chen Xiaoxin started a happy slacking off session, but he didn't slack off for too long. After all, he still had to solve the theoretical problems of quantum computing. If these were not solved, the subsequent work could not be carried out.

There are two types of theoretical research in quantum computing. One is pure theoretical research, and the other is experimental research, which applies basic theory to make something useful, or uses experiments to verify the most cutting-edge theories and provide experimental data for the further development of the theories.

Chen Xiaoxin naturally chose pure theory, which is the most basic logic at the bottom of quantum computing. In fact, the principle of quantum computing is very simple. It is a computing model based on quantum mechanics. In classical computing, the basic unit of information is bit, which can only be in one of two definite states.

But quantum computing is different, because according to the principle of superposition, basic information will be in a superposition state. At the same time, because of another principle of quantum mechanics, quantum entanglement, it provides a unique way for quantum information transmission.

Chen Xiaoxin will not touch upon the previous content, from quantum superposition to quantum entanglement, and then to the operation of quantum gates. He only focuses on the theoretical research of quantum algorithms.

It sounds like a physics research, but in fact it tests the understanding of mathematics, especially the high research ability of linear algebra, because the mathematization of quantum computing relies heavily on linear algebra. As for other mathematical content, it generally depends on the research direction.

of course,

The Schrödinger equation is also indispensable, as it is one of the foundations of quantum computing.

“呃
"How do I start?"

Chen Xiaoxin held his cheeks with both hands, staring at the computer screen with lifeless eyes, and two quantum algorithms appeared in his mind. One is Shor's algorithm, which can decompose large integers in polynomial time, and the other is Grover's search algorithm, which can find specific items in an unordered database with square root acceleration.

The best option is to upgrade the algorithms based on these two algorithms, but this is not my character. As a man at the top of mathematics, how can I stand on the shoulders of others? The key is to reach for the stars on the shoulders of the two Americans.

But
New algorithms are difficult to create.

Chen Xiaoxin felt deep despair and pain, which was even more hopeless than when he faced a petite and beautiful young woman last night.

Helplessly, he searched for information about quantum algorithms on the Internet, mainly to see if there was any such research in China, and perhaps he could find some inspiration from it. As a result, he discovered that the seemingly booming field of quantum computing did not even have its own quantum algorithms. All of them were based on American algorithms.

What
what's the situation?
If the United States issues a ban, won't we all be finished?
But Chen Xiaoxin could also feel the helplessness here. Quantum algorithms cannot be developed overnight. For example, the most famous Shor algorithm was discovered thirty years ago, and the Grover search algorithm was proposed twenty-eight years ago.

The time gap here requires a huge investment of money and manpower. China happens to lag behind the United States in terms of manpower as a whole. Moreover, many domestic projects are under the title of quantum computing. China is trying every possible way to make money.

"Hey"

"I was full of ambition a few days ago. Now I'm like a quail." Chen Xiaoxin sighed, his brows full of melancholy and pain. The environment that seemed full of vitality and everything was competing for development was actually dilapidated, especially the industrialization. The restrictions on the export of high-tech products to us directly made the situation worse.

Thinking of this,
Chen Xiaoxin felt a little uneasy.

On one hand, there is the embarrassing dilemma encountered in technology, and on the other hand, there are various sanctions from the United States. The road to independent research and development of quantum algorithms seems to be difficult and bumpy.

But should we give up just because of this?

Do not!
impossible!

Just as Chen Xiaoxin was getting more and more annoyed, a sentence suddenly rang in his mind: If foreigners can do it, why can't we do it? We are inferior to them?
This is what Mr. Qian said.
Then the Dongfeng missile and the liquid sounding rocket were developed.

And I also want to come up with our own quantum algorithm!
"grass!"

"I'm so fucking excited!!!"

(End of this chapter)