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Through this exchange, Xu You once again realized how rich Han Shubin's knowledge is.

The answers to these questions, looking at the whole world, few people can answer them perfectly.

And Han Shubin is one of them.

Han Shubin has a magical ability to simplify complex issues in the process of explaining them.

This is also an important ability Xu You learned from Han Shubin.

Correspondingly, Han Shubin felt incredible about Xu You's ability to accept.

Normally, for every question Xu You asked, Han Shubin would have to give a lot of lectures to his students, and they might not be able to understand much of it.

But Xu You actually understood all these questions in just a few hours.

At this time, Han Shubin finally understood why Xu You was able to make achievements in so many different fields.

With such a learning speed, why worry about not being able to develop in multiple fields?

Han Shubin is very fortunate that he was able to make this choice.

In this way, the success of the island project will definitely get closer and closer.

After chatting with Han Shubin for half a day, Xu You also had some new ideas on solving the problem of quantum error correction.

Academician Han, thank you for your teaching today, then I won't bother you.

You're welcome, Xu You, it's really a pleasure communicating with you. If you have any questions in the future, please contact Teacher Liu Jiao in time. As long as I have time, I will definitely help you answer them.

After thanking Han Shubin, Xu You returned to his room next to Ji Da.

So far, there is still no substantial progress in the preparation process and material molding technology of new materials.

In the calculation of new superconducting materials, there is no case where the superconducting critical temperature is predicted to exceed 200K.

When the superconducting project was not progressing, Xu You happened to be able to study the problem of quantum error correction.

Actually, the key to solving the quantum error correction problem is to compile a set of useful quantum error correction codes. Xu You said to himself.

And the knowledge in it is no stranger to Xu You.

There is a certain connection with the quantum gate that Xu You first came into contact with.

Among them, it also contains a lot of knowledge of mathematics and informatics.

Let's go through several quantum error-correcting codes that are commonly used today.

Before creating his own unique quantum error-correcting codes, Xu You still needs to practice these classical error-correcting codes first.

With the experience taught by Han Shubin.

Xu You has a deeper understanding of quantum error correction.

In the editing of quantum error-correcting codes, it is not as jerky as a novice.

Soon, Xu You became very proficient in editing several common error-correcting codes.

Even in some places, it is more convenient than classic error-correcting code editing.

After this, Xu You can finally start editing a new set of quantum error correction codes.

First, Xu You needs to express the unitary operator acting on a single qubit as a linear combination of matrices.

Xu You had done this kind of work before when he was researching quantum gates.

At this time, each matrix can represent an error operator.

σx represents the error operator of bit flipping, σz represents the error operator of phase flipping, σy represents the error operator of bit flipping and phase flipping at the same time, and I represents the operator of no error...

After determining the representation of the error operator, Xu You started the next step.

Define the quantum state.

Here, Xu You calculated the corresponding formula based on his own definition.

As Xu You's attention gradually deepened, Xu You's condition gradually improved.

Unknowingly, Xu You entered a state of flow.

With the addition of the state of flow, Xu You's efficiency has become higher, and the calculation formula is also very smooth.

When feeling hungry or thirsty, Xu You can still eat a piece of chocolate or drink saliva, which will not affect the continuation of the flow state.

Use vectors e1 and e2 of length n to represent bit flipping errors and phase flipping errors, so that the quantum state after the error occurs can be deduced...

According to the quantum state he defined before, Xu You followed this train of thought and quickly deduced the quantum state after the error occurred.

Seeing this somewhat strange structure, Xu You didn't have any doubts.

Even under normal conditions, Xu You almost never made mistakes in solving problems.

Especially in this state of flow.

Xu You is absolutely confident that his deduction will be completely correct.

The next task is to transform the quantum circuit according to various quantum gates.

The quantum gate is exactly what Xu You is good at.

When he was doing scientific research with Wang Xiangwu, Xu You created several new quantum gates by himself.

This time, the previous achievements were put to good use.

...

After a few days, Xu You finally compiled a new set of quantum error correction codes.

In order to detect the transmission error rate of this new set of quantum error-correcting codes.

Xu You needs to go to the quantum physics laboratory to conduct experimental measurements.

After Xu You and Wang Xiangwu explained the matter, Wang Xiangwu also readily agreed to Xu You's request.

After all, this kind of experiment is almost free of cost, and there is no need for an application process.

But Xu You secretly promised that if the result is really made, the result will still be hung under the Quantum Physics Laboratory, and a part of the bonus will be given to the laboratory.

Otherwise, Xu You would be too embarrassed to do experiments in the quantum physics laboratory.

Seeing Xu You coming, Zhao Weijia was not too surprised.

Although Xu You is nominally a condensed matter physicist, he often does experiments in the quantum physics laboratory.

This time, it is estimated that there is another big project to study.

Xu You, what projects have you been working on recently? It seems that I haven't seen you for a long time. Zhao Weijia recalled.

Zhao Weijia didn't know that Xu You had recently been involved in secret projects like finding new high-temperature superconductors.

Even Wang Xiangwu was not clear about this matter.

At most, we can only make some guesses based on a small amount of information that has flowed out.

There are quite a lot of projects, but it's not convenient to go into details. Xu You replied.

Hey, Xu You, did you participate in the search for the 150K superconductor before?

The weather is not bad today, brother, how is the blind date going?

Seeing that Xu You deliberately changed the topic, Zhao Weijia also knew that it was inconvenient for him to ask about these matters.

After chatting with Zhao Weijia for a few words, Xu You started the formal experiment.

What Xu You needs to do is to measure the transmission error rate of his quantum error-correcting code under different noise conditions.