The top of the scholar

Chapter 109 Dean, do me a favor

Different from the ordinary light source structure, the light source structure to be applied in the quantum entanglement light source is very precise.

But it is this precise light source structure that requires a lot of energy to design.

The core members of Wang Xiangwu's experimental group put a lot of energy into this.

And through the influence of these days.

Xu You's progress is also very fast.

From the very beginning there was a void in this knowledge.

By the time I gradually started to master it, I could even come up with some good personal ideas in the end.

Finally, after many days of hard work, the design of the new light source structure was completed.

With the support of Jinghua Feiqing Laboratory, the problem of micro-nano materials has also been solved.

After completing the processing of the light source structure, a new stage of experiment officially started.

The experiment process this time was still not so smooth.

First of all, one of the difficulties that everyone encountered was the alignment problem between the cavity mode and the quantum dots.

Because the microcolumns need to align the exciton lines and biexciton lines of the quantum dots with the split cavity mode, respectively.

This is very difficult in actual experimental operation.

Fortunately, after many experiments, a small part of the ideal data was obtained.

"Under ideal conditions, the collection efficiency is still greatly improved compared to before, and can reach a maximum of about 12%."

After completing the experiment at this stage, the experimental group obtained new experimental data statistics.

Although compared to the previous experiment, this time it was considered a relatively successful experiment.

But objectively speaking, such a result can only be said to be quite satisfactory.

Because the experimental operation process is very difficult, the photon collection efficiency is in a situation of large fluctuations.

In this way, the practical significance is not great.

It can only be said that it is a research result that can barely be crossed.

As the leader of this project, Wang Xiangwu will naturally not be satisfied with such a result.

"In this way, try other micro-nano structure materials to see if there is a better effect."

After that, the experimental group also tried other micro-nano structure materials such as nanowires and microlenses.

Unfortunately, none of the ideal experimental phenomena were obtained.

Other micro-nano structure materials, although some have a certain improvement in the collection efficiency of photons.

But because they lack obvious cavity enhancement effect, the improvement of entanglement fidelity and indistinguishability of photon pairs is very limited.

Moreover, the quality of the light source may be degraded due to the influence of surface defect charges.

All these existing light source structures still cannot meet the requirements of practical application on the whole.

After many attempts, the desired result was not achieved.

Wang Xiangwu had no choice but to decide to let this project go.

"In any case, our research on the topic has achieved a preliminary breakthrough. Let's put this topic aside and continue the research on other topics. If there are any good ideas on this topic, we will consider restarting the project .”

Although in Wang Xiangwu's heart, he attaches great importance to this project related to China's new generation of quantum computers.

But in the face of realistic results, Wang Xiangwu can only make the most rational choice.

After all, such a project that has reached the bottleneck cannot cause all other projects in the laboratory to stagnate.

But Xu You didn't feel discouraged because of these.

Through these days of study and thinking.

Xu You's mastery of this knowledge has reached a rather impressive level.

And about how to realize the practical quantum entanglement light source.

Xu You also had a lot of ideas.

However, so far, the various knowledge chains in Xu You's mind are not enough, and they cannot be well connected together.

Xu You felt that he should enrich his knowledge and read more papers to see if he could get some important information and inspiration.

……

On this day, Xu You came to the library and wanted to borrow some related books.

After screening out a lot of books with good content and a certain relationship with this topic.

Xu You realized an important problem.

With your own library card, you can only borrow 6 books at a time.

Although Xu You can also choose to read these books directly in the library.

But Xu You always felt that reading in the library was far better than being in the dormitory.

If you want to enter the state of deep learning, it is not simply to let the system turn on.

Rather, it requires a transitional process.

Just like when a car starts, it does not enter the high-speed state all at once, but there is a process of starting, and it needs to be accelerated bit by bit to reach a higher speed per hour.

Moreover, the same deep learning state, the efficiency is not exactly the same.

This is why Xu You prefers to study by himself in the dormitory.

"No, I have to find a way to increase the limit of my library card."

Since he was not very familiar with the librarian, Xu You felt that the other party might not help him with this favor, and they might not have such great power.

"Let's go to the instructor... No, go directly to the dean."

Xu You knew that if he was looking for a mentor, he would probably apply step by step.

It's better to do it in one step and directly find a leader with greater power.

This is the experience Xu You learned from Wang Xiangwu.

Of course, the premise is that one must have sufficient strength and status.

Xu You felt that the current self should still be worthy of such a condition.

When he came to the dean's office, Xu You knocked on the door.

"Please come in!"

Fortunately, just like last time, Jiang Hong happened to be in the dean's office.

Xu You opened the door and said politely, "Hello, Dean."

Seeing that it was Xu You who came, Jiang Hong immediately greeted him with a smile.

"Xu You, it's you. What's the matter this time? Don't worry, come in and sit down, and talk slowly."

After knowing that Xu You posted another "Nature".

Jiang Hong is also very grateful for his previous choice.

Children like Xu You need to be cultivated individually.

If it is the same as for other students, make a patterned requirement.

Even if it doesn't hurt Xu You, at least it will affect Xu You's progress.

"Dean, I want to mention the upper limit of my library card. I can only borrow 6 books at a time, which is really not enough."

Hearing Xu You's request, Jiang Hong also laughed.

"I thought it was something. It's easy to handle. I'll find someone to arrange to upgrade your library card to a doctoral level. Borrowing ten books at a time should be enough."

Xu You was not satisfied with such an improvement.

There is no essential difference between borrowing ten books at a time and borrowing six books at a time.

You know, Xu You prefers to use "stack" as a unit.

(End of this chapter)