Chapter 109 Dean, do me a favor

Different from ordinary light source structures, the light source structure used in quantum entanglement light sources is very precise.

But even this precise light source structure 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 these days of hearing and seeing.

Xu You's progress is also very fast.

There was a blank slate in this knowledge from the beginning.

Gradually I started to master it, and finally I was able to come up with some good personal ideas.

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 phase of experiment officially started.

This time the experimental process was still not so smooth.

The first difficulty everyone encounters is the alignment problem between the cavity mode and the quantum dots.

Because the micropillar splits the cavity mode, it is necessary to align the exciton lines and biexciton lines of the quantum dots respectively.

This is very difficult in actual experimental operations.

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

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

After completing this phase of the experiment, the experimental group obtained new experimental data statistics.

Although compared to the last experiment, this one is considered a relatively successful one.

But objectively speaking, this result can only be said to be satisfactory.

Because the experimental operation process is very difficult, the photon collection efficiency is subject to large fluctuations.

In this way, the practical significance is not great.

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

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

"In this way, we will try other micro-nano structure materials to see if we can have more ideal effects."

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

But unfortunately, no particularly ideal experimental phenomena were obtained.

Although some other micro-nano structure materials have certain improvements in photon collection efficiency.

However, because they lack obvious cavity enhancement effects, the improvements in entanglement fidelity and indistinguishability of photon pairs are very limited.

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

All these existing light source structures are generally unable to meet practical requirements.

After trying many times, I failed to achieve the desired results.

Wang Xiangwu had no choice but to decide to put this project aside for now.

"Anyway, our research on this topic can be regarded as a preliminary breakthrough. Let's put this topic aside for now and continue research on other topics. If there are any good ideas about this topic, we will consider restarting the project.

.”

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

But facing the realistic results, Wang Xiangwu could only make the most rational choice.

After all, all other projects in the laboratory cannot be brought to a standstill just because of such a project that has reached a bottleneck.

But Xu You did not feel discouraged because of this.

Through these days of study and thinking.

Xu You's mastery of this knowledge has reached a pretty good level.

And about how to realize practical quantum entanglement light source.

Xu You also has many ideas.

However, so far, the number of related knowledge chains in Xu You's mind is not enough, and they cannot be well connected.

Xu You thinks that he should enrich his knowledge and read more papers to see if he can 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 many books with good content and certain relevance to this topic.

Xu You realized an important problem.

With your 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 the state of reading in the library was far better than being in his dormitory.

If you want to enter the deep learning state, you don't simply have to let the system turn it on.

Rather, it requires a transitional process.

Just like when a car starts, it does not reach high speed all at once, but there is a process of starting, and it needs to accelerate bit by bit in order to reach a higher speed.

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

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

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

Since he was not very familiar with the library administrator, Xu You felt that the other person might not be able to help him, and they might not have such great power.

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

Xu You knew that if you were looking for a counselor, you would probably apply step by step.

It would be better to just take the first step and find a leader with more power.

This is the experience Xu You learned from Wang Xiangwu.

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

Xu You felt that at present, he should still be worthy of such a condition.

Arriving at 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 the person coming was Xu You, Jiang Hong immediately greeted him with a smile.

"Xu You, it's you. What happened this time? Don't be anxious, come in and sit down and talk slowly."

After learning that Xu You posted another article in "Nature".

Jiang Hong also felt very lucky for his previous choice.

Children like Xu You need individualized training.

If we have the same set of requirements as other students.

Even if it can't be said to harm Xu You, it will at least affect Xu You's progress.

"Dean, I would like to increase the borrowing 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. This is easy to handle. I will directly find someone to arrange to upgrade your library card to a doctorate level. You can borrow ten books at a time. This 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 the unit.
Chapter completed!