The top of the scholar

Chapter 209 Important Quantum Error Correction Problems

"Why is the community more strict than before?" Xu Youxin said.

Xu You found that at the security office at the gate, the security guards began to carefully check everyone who entered the community.

Although in the past, the community was also accessed by swiping cards.

But there is also the kind of card rubbing behavior of people who are not in the community.

This kind of situation is very common in every community, and the general security guards don't care about it.

For those who do not have a community card, the security guards will require them to register before they can be released and enter the community.

Xu You thought, if every community has become like this, it may be that something happened recently that made the overall supervision of the community stricter.

And if only my community is like this...

That question is quite different.

Xu You didn't think too much, after all, going back to study was more important.

After returning to his room, Xu You turned on the computer and began to organize the materials sent by Han Shubin.

The materials Han Shubin sent were all kinds of internal documents and documents.

Although the quantity is not particularly large, each piece of information has a high gold content, and it is the kind of information that can't be bought even if you want to buy it.

However, the content on these materials has a very high threshold, and the content is very obscure.

It is impossible for non-professionals to understand.

Of course, this is not a big problem for Xu You.

Although Xu You is not a professional researcher on quantum computers.

But Xu You has a certain understanding of many things.

Moreover, some of Xu You's previous achievements are related to quantum computers.

As for this kind of logical knowledge, Xu You can completely understand it with his powerful brain.

before starting study.

Xu You prepared some chocolate and water beside him.

This is an experience that Xu You summed up after experiencing so many deep learning states.

A continuous long-term deep learning state is a great test for Xu You's body.

But if the time for deep learning is spread out, the effect will be greatly reduced.

In the process of learning, proper supplement of energy and water can enable Xu You to persist for a longer time at a time.

Through practice, the simple actions of eating chocolate and drinking water will no longer distract Xu You's attention.

After making sufficient preparations, Xu You began to study these materials.

It is very challenging to teach yourself such a very obscure knowledge from scratch.

Even Xu You can't understand everything at once.

The method Xu You adopted was to learn these materials at a faster rate for the first time.

In the case of ensuring that you can understand most of the content, if you encounter something you don't understand, mark it first.

The marking is just to make it easier for Xu You to find its location. At the same time, Xu You also wrote down this question that he didn't understand in his mind.

After reading the first time completely, Xu You started the second time from the beginning to think about these marked places again.

With the accumulation of knowledge for the first time, it becomes much easier to solve these problems.

After a few days, except for a few places, Xu You has understood most of the knowledge.

When reviewing the concept of "quantum error correction" again, Xu You already had a deeper understanding.

It's like when two people are typing and chatting, it is inevitable that some wrong messages will be sent.

If it is some small problem, then this kind of error is insignificant.

For example, A asks B, have you eaten yet?

B originally wanted to say that he had eaten, but the answer was that he hadn't eaten.

This doesn't have any serious repercussions.

But what if, say, A asks B, are we going to push the button on this nuclear device?
At this time, if there is an error in the information input.

Change "don't" into "yes".

That would have extremely serious consequences.

Therefore, it is desirable to ensure that quantum computers can process information correctly.

Quantum error correction is a problem that must be solved.

One of the simpler ways to solve this problem is to repeat.

Because the probability of sending the wrong information every time is relatively small.

After a large number of repeated sending of the same information, taking more information as the result can greatly reduce the error rate.

Of course, in addition to this kind of error, there are some more complex error types, and the error correction method is also more complicated.

After Xu You completed the quantum error correction part of the study.

There are still a few bits of knowledge that are not very clear.

Xu You decided to go to Han Shubin for face-to-face consultation.

After telling Liu Jiao about his request, Xu You and Han Shubin made an appointment to come to Han Shubin's office at the University of Science and Technology of China again.

When Xu You participated in the island project and met Han Shubin for the first time.

This is the fifth time the two have met.

Seeing Xu You, Han Shubin was also in a good mood.

"Well, how do you like these contents?" Han Shubin asked with a smile.

"The part of quantum error correction has been self-study, but there are still a few problems that I don't understand very well."

Hearing Xu You's answer, Han Shubin was very surprised.

Have you read the part of quantum error correction in the past few days?
You know, this is all the knowledge about quantum error correction that Han Shubin has been able to collect in the past few years.

Looking around the world, no one necessarily has more information in related fields than Han Shubin.

If Han Shubin were to learn from scratch...

It is also difficult to get started without a few months.

But for Xu You, Han Shubin would definitely not doubt it, nor would he do such a boring thing as taking a few questions to test Xu You.

"Xu You, tell me about your current problems."

"Okay, Academician Han."

Next, Xu You said in turn, several questions that came up to him in the process of studying these days.

Just from Xu You's question, Han Shubin can be sure that Xu You has indeed understood most of the above knowledge.

If you can't understand so much knowledge, just browse these materials.

It is impossible to ask questions of this level.

Every question Xu You raised was the most difficult point in these materials.

And Xu You didn't understand, and it wasn't because Xu You was not capable enough.

Just because of the limitations of the form of data, it is difficult to express this knowledge with words alone.

Just like what Xu You described in the mechanism of high-temperature superconductivity, even the top experts in the industry cannot understand all of them.

After that, Han Shubin and Xu You communicated for several hours.

Through the face-to-face communication with Han Shubin, Xu You finally solved several doubts in his mind.

"Thank you Academician Han, I have figured it all out."

(End of this chapter)