Chapter 208 I have absolute confidence that I will not be wrong
Through this communication, Xu You once again realized how rich Han Shubin's knowledge is.
Looking around the world, there are few people who can perfectly answer these questions.
And Han Shubin is one of them.
Han Shubin has an uncanny ability to simplify complex problems when explaining them.
This is also an important ability that Xu You learned from Han Shubin.
Correspondingly, Han Shubin found Xu You's ability to accept things incredible.
Normally, for every question Xu You asked, Han Shubin would need to give many classes to his students, and they might not understand much.
But Xu You actually figured out all these problems in just a few hours.
At this time, Han Shubin finally understood why Xu You could achieve results in so many different fields.
With such a learning speed, why worry about not being able to develop in multiple fields?
Han Shubin was very glad that he could make this choice.
In this way, the success of the island plan will definitely be closer and closer.
After chatting with Han Shubin for half a day, Xu You also had some new ideas about solving the problem of quantum error correction.
"Academician Han, thank you for your guidance today. I will not bother you anymore."
"You're welcome, Xu You. It's really a pleasure to communicate 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 .
So far, there has been no substantial progress in the preparation process and material forming technology of new materials.
Calculations of new superconducting materials no longer predict that the superconducting critical temperature will exceed 200K.
When the superconducting project was not making any progress, Xu You could study the problem of quantum error correction.
"In fact, the key to solving the quantum error correction problem is to edit a set of easy-to-use quantum error correction codes." Xu You said to himself.
And the knowledge here is not unfamiliar to Xu You.
There is a certain connection between this and the quantum gate that Xu Youyi first came into contact with.
It also includes a lot of knowledge in mathematics and informatics.
" Let's first review several commonly used quantum error correction codes today."
Before creating his own unique quantum error correction code, Xu You still had to practice these classic error correction codes first.
After learning from Han Shubin.
Xu You has a deeper understanding of quantum error correction.
When it comes to editing quantum error-correcting codes, he is not as clumsy as a novice.
Soon, Xu You became very proficient in editing several common error correction codes.
In some places, it is even more convenient to edit than classic error correction codes.
After this, Xu You could finally start editing a new set of quantum error correction codes.
First, Xu You needs to express the unitary operator acting on a single quantum bit as a linear combination of matrices.
Xu You had done this kind of work before when he was studying quantum gates.
At this time, each matrix can represent an error operator.
"σx represents the error operator of bit flip, σz represents the error operator of phase flip, σy represents the error operator of both bit flip and phase flip, and I represents the operator that does not cause any error..."
After determining the representation of the error operator, Xu You started the next step.
Define quantum state.
Here, Xu You calculated the corresponding formula based on his own definition.
As Xu You's attention gradually deepened, his condition gradually improved.
Unconsciously, Xu You entered the flow state.
With the help of the flow state, Xu You's efficiency became higher and he could calculate the formulas very smoothly.
When he feels hungry or thirsty, Xu You can eat a piece of chocolate or drink a sip of water without affecting the continuation of the flow state.
"Use vectors e1 and e2 of length n to represent bit flip errors and phase flip errors respectively. In this way, we can deduce the quantum state after the error occurs..."
Based on the quantum state he had defined before, Xu You followed this line of thought and quickly deduced the quantum state after the error occurred.
Seeing this somewhat strange structure, Xu You did not have any doubts.
Even under normal circumstances, Xu You almost never makes mistakes in solving problems.
Especially when you are in this flow state.
Xu You was absolutely confident that his deduction would be completely correct.
The next task is to transform the quantum circuit according to various quantum gates.
Quantum gates are exactly where Xu You excels.
When Xu You was doing scientific research projects with Wang Xiangwu, he created several new quantum gates on his own.
This time, several achievements were put to good use.
…
After several days, Xu You finally edited a new set of quantum error correction codes.
In order to detect the transmission error rate of this new set of quantum error correction 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 readily agreed to Xu You's request.
After all, this kind of experiment has almost no cost, and there is no need for an application process.
But Xu You secretly promised in his heart that if he really achieved any results, the results would still be listed under the Quantum Physics Laboratory, and part of the bonus would also be given to the laboratory.
Otherwise, Xu You would be embarrassed to do experiments in the quantum physics laboratory.
Zhao Weijia was not too surprised to see Xu You coming.
Although Xu You is nominally a condensed matter physicist, he also often conducts experiments in quantum physics laboratories .
This time, it is estimated that there is another big project to be studied.
"Xu You, what project have you been working on recently? It seems like I haven't seen you for a long time." Zhao Weijia recalled.
Zhao Weijia didn't know that Xu You was recently involved in a secret project to find new high-temperature superconductors.
Even Wang Xiangwu was not clear about this matter.
At best, we can only make some guesses based on the small amount of information that has leaked 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 discovery of the 150K superconductor?"
"The weather is nice today, Senior Brother, how are your blind dates going recently?"
Seeing that Xu You deliberately changed the subject, Zhao Weijia also knew that it was not convenient for him to ask about these matters.
After chatting with Zhao Weijia for a few words, Xu You began the formal experiment.
What Xu You needs to do is to measure the transmission error rate of his quantum error correction code under different noise conditions.
