In the face of Xu Mang's arrogant words, Wang Ai and his little niece were full of contempt, although Xu Mang is very famous in the academic world, and his achievements are worthy of his fame, but... This is too arrogant.

Autistic?

How can it be autistic?

I am not a vegetarian or not, and I can enter the junior class of the University of Science and Technology, and I still have a few brushes.

For the incredulous expressions of the two, Xu Mang just smiled indifferently and silently walked into Wang Ai's room, and then Wang Ai and his little niece also followed.

However, Wang Jiafu's little niece stood for a while, and suddenly found that there seemed to be one less person, Professor Xu's fiancée did not come, could it be... Isn't she worried about something happening to her fiancé?

Bang Bang Bang,

The girl came to the living room, looked at Yang Xiaoman, who was eating fruit and scrolling through Weibo, and asked curiously, "Sister Xiaoman... Maybe Professor Xu needs your help, you are the first place in the world's mathematics competition. ”

"Him?"

"I'm going to just mess with him. Yang Xiaoman said dissatisfiedly: "Don't go in, just let your sister stay inside, standing next to that big idiot, it is easy to cause psychological trauma." ”

But Yang Xiaoman's kind move was rejected by the sixteen-year-old genius girl, and she said stubbornly: "I don't believe what Professor Xu can do, I have seen more professors in the junior class of HKUST, and I have seen a big scene anyway." ”

Looking at the back of the girl leaving, Yang Xiaoman sighed, some people don't shed tears when they don't see the coffin... It's okay to let this big bastard teach her a lesson, and lay out some thorns and blades on her smooth life path.

meanwhile

Xu Mang is thinking about how to solve the problem of different colors of photons, and in his memory, PRL once posted about the entanglement problem between independent photons of different colors.

Xu Mang has a little impression of this paper, because he is Chinese... Naturally, I will pay attention to it, and the level of this paper is quite high, and at that time, this article was copied into the brain using the system.

soon

Xu Mang recalled the whole process of this paper, which seems to use a combination of time-resolved measurements and active phase feedback to finally realize the quantum entanglement problem between photons of different frequencies, and all this is done on a platform called narrowband quantum light source.

But obviously, Xiao Ai's research institute does not have such professional equipment... It seems that I have to find another way, but this method can be put to use, that is, to use time.

"Sister Ai?"

"Professor Xu... Why are you in a daze?" the little niece asked curiously, "Are you confused?"

"Humph!"

"Deliberately pretending to be thinking. Wang Ai saw Xu Mang's cute expression, and said disdainfully: "A guy who eats soft rice in vain." ”

Of course Xu Mang heard the conversation between the two sisters, it is correct to eat soft rice, after all, the doctor said that he has a bad stomach and often eats soft rice, but this vain name makes Xu Mang very unhappy, he is also a professor in the Department of Physics of Fuda University, why is it in vain?

Even if you don't pay attention to the news, haven't you seen so many issues of Nature?

however

Xu Mang misunderstood Wang Ai at this point, he had read several of his papers N times a long time ago, but he was unwilling to admit Xu Mang's excellence, as if there was an author named Taibai Mao, he was a handsome guy, but readers were unwilling to admit it.

"Huh?"

"What kind of visible light photon are you?" Xu Mang asked with a dark face, "Tell me quickly!"

"It's just an ordinary photon. Wang Ai said: "The words of near-infrared photons... If you're so good, count it yourself, I won't tell you anyway. ”

This guy...

Neurotic, right?

But it is very similar to Xiao Man, except that he is not as good as Xiao Man in appearance, and he is 10,000 times better than Xiao Man in figure, and the others are exactly the same as Xiao Man, almost a copy.

ultimately

Xu Mang began to calculate the value of peaking light at a specific wavelength, but it was an extremely boring process, but fortunately Xu Mang turned on the beast mode, so that this boring time did not seem so boring.

“？？？”

“？？？”

The two sisters watched Xu Mang write on the paper, the speed was outrageous, but the speed was very fast, but the handwriting was quite neat, and what made the two sisters feel even more incredible was that all the calculation process was mental arithmetic.

"Sister... Is Professor Xu right?" asked the little niece curiously.

"I don't know. ”

Wang Ai shook his head and said with a puzzled face: "Maybe... Maybe it's a fool's errand. ”

In less than five minutes,

Xu Mang got the peak value of the two photons at a specific wavelength, but this was just the beginning, he needed to use a way to change the frequency of the two photons, at this time Xu Mang thought of a device, which is very common in optics and is a necessary part of the laser.

Optical resonator...

However, Xu Mang's resonator is curved, and Xu Mang's original intention is that when the photons enter the tiny bent structure, they are unimpeded on the bent barrier, and then continue to oscillate, so that its frequency reaches a certain time and reaches the required peak value.

The result is the quantum entanglement of visible photons and near-infrared photons... This is the ideal state of Xu Mang.

Xu Mang called this specific kind of quantum entanglement 'Xu Mang time entanglement', which connects the quantum entanglement phenomenon of photons and near-infrared photons with time.

"Hello?"

"You've only been writing for about ten minutes and then you're in a daze again, is there no way?" Wang Ai glanced at Xu Mang, and said dissatisfiedly: "Don't brag if you don't have this strength, look... The cowhide was blown by you. ”

"How long has it been now?" Xu Mang asked curiously.

"Twenty-three minutes. ”

"Oh..."Xu Mang nodded, stretched his waist, and said with a smile: "It's almost perfectly solved... For the rest of the proof of calculation, let the person in charge of your research project tell me, and ask your dad for my contact information. ”

Words fall,

Xu Mang got up and prepared to leave the small room.

Wang Ai is trying to scold, but it's not wrong to think about it, there is a big difference between himself and him, don't look at the same age, but the achievement is not at the same level, he is a professor in the Department of Physics of Fudan University, and the person in charge of many research projects.

"That's right..."

When I got to the door,

Xu Mang stopped and said seriously: "The resignation report can be typed by the way, don't delay it for too long." ”

Coming to the living room,

Xu Mang saw Xiao Man with a calm face, and said with a smile: "Let's go, let's go, let's go back." ”

"It's done?" Yang Xiaoman glanced at it and said angrily, "The two of them are not autistic, right?"

"Not yet. ”

"Just let the emotions brew for a while. Xu Mang smiled and hugged Xiao Man into his arms, leaned into her ear and said, "Has Mom talked to you about something?"

Originally, Xu Man's action made Xiao Man's heart flutter, but then his words instantly ignited the anger hidden in his heart, and he said viciously: "Hehe... Don't want to live at night, I can't kill you, old lady!"

"Ahem!"

"Go back, go back..."Xu Mang coughed a few times in embarrassment, and then shouted, "We're going back!"

As soon as the voice fell,

The two left Wang Jiafu's house in a greasy and crooked way.

now

Wang Ai clicked on Xu Mang's document and read the content on it carefully, the front was fine... But in the middle of the confusion, I basically can't understand it, but to the theoretical part, because it is a literal expression, it is still relatively easy to see, except for some numbers that have not yet been proven.

No, no, no, no!

It's only been twenty-three minutes... Just solved the problem that had been bothering us for a month?

That's it?

Thinking back to Xu Mang's relaxed and comfortable appearance, he didn't seem to encounter any difficulties, except for looking at the display screen with a cute face in the early stage, and then holding a paper and pen to calculate, followed by crackling and typing, just like that... Solved the problem?

Through a series of complex calculations, he obtained a peak value, and then used a similar laser resonator to continuously oscillate it, so that the frequency between the two reached the theoretical value at a certain time.

After that, everything falls into place, with visible photons and near-infrared photons producing quantum entanglement, and the probability of this happening is 100 percent.

Autistic...

Why did this question become so simple in Xu Mang's hands?

Wang Ai has fallen into autism, she doubts her IQ for the first time, this problem only takes others less than half an hour, but she has spent a month, and has not solved the problem...

At this time, Wang Ai's reading speed became slower and slower, and the expression on his face became more and more sad.

Cheer up the spirit,

Wang Ai continued to read, and she discovered a future envisioned in Xu Mang's theory, where quantum entanglement, quantum light sources, and quantum storage devices are combined, and photon pairs can be transferred to quantum storage devices in the inherent quantum entanglement, achieving so-called quantum exchange.

This is a new kind of quantum communication that relies on a resonator to introduce photons of a specific wavelength to produce a pair of entangled photons, which has the effect of a communication system.

What to do?

I feel like I'm an idiot in front of him.

Wang Ai used to think that he was very powerful, after all, when the junior class of the University of Science and Technology came out, he was still favored by so many professors, but who would have thought that a Xu Mang would be killed halfway, plus a Yang Xiaoman, these two people are more terrible than the other.

"Shameless!" Wang Ai saw the end and found that the shameless guy had turned the specific quantum entanglement that happened at a certain time into 'Xu Mang Time Entanglement', and he immediately felt extremely angry.

But what's the use of anger?

After all, someone else found out, and I was about to work at his place... One misstep becomes a thousand hatreds.

"Sister Ai?"

"What's this equation?" asked the little niece, confused, she had long since been autistic...

Wang Ai shook his head and said indifferently: "I don't know..."

Although Wang Ai didn't want to admit it, she really didn't know that what Xu Mang wrote was beyond the scope of her own understanding, and she always felt that his things were very mysterious and very spiritual, although she couldn't understand them.

"Hello?"

"Professor Tian..." Wang Ai took out his mobile phone and made a call to Professor Tian, the head of the research group, and said solemnly: "Professor Tian... Are you free right now?"

"Oh?"

"Is there anything else going on with Xiao Ai so late?" asked Professor Tian.

"I..."

"The puzzle that has been plaguing our research team for a month has been solved perfectly. Wang Ai said seriously: "I sent the solution to your mailbox?"

topic

Words of surprise came from the other side.

"What?"

"Solution... Solved?!" Professor Tian said in shock: "Did you solve it?"

Wang Ai said helplessly: "It's not... I don't have the ability. ”

Professor Tian thought for a moment, thought of Wang Ai's father, and then asked, "Your father?"

"It's not..."Wang Ai hesitated for a moment, and said seriously: "He is my father's colleague, and he is also a professor of theoretical physics. ”

"His name is Xu Mang. ”

......