Chapter 225: Have you ever seen Jijing at four in the morning?
As a programmer, it is obviously a bit abnormal to have a thick head of hair.
This can even easily make people think that this is an incompetent programmer.
Of course, no programmer wants this to happen, but it is a helpless result because they are trapped by the work they do.
Xu You recalled the various hair loss phenomena he had seen over the years and felt that the problem was not the profession of programmer, but the habits of this profession.
"Chang Gong, do you stay up late every night?"
"Let me put it this way, Xu You, have you ever seen Jijing at four in the morning?"
"Rarely. My daily routine is pretty regular." Xu You said.
"I haven't gotten off work yet at this time every day." Chang Xiaoping said with a smile.
"Then Chang Gong, do you exercise regularly?"
"I also exercise, and during my breaks, I play some e-sports or something like that."
"Do you have a regular diet?"
"This is quite regular. I have a midnight snack every night, and coffee is indispensable."
After hearing what Chang Xiaoping said, Xu You thought to himself, it would be strange if he didn't lose his hair.
"Chang Gong, if you can go to bed early and get up early, eat three meals a day, exercise regularly, and drink plenty of hot water, this shouldn't be the case."
"Forget it, I can't do it. It's more realistic to find a good hair transplant doctor."
"It just so happens that my senior brother has had hair transplantation done before. I'll ask him for you when I get back."
While the two were talking, Chang Xiaoping had already helped Xu You copy the data.
In the following days, Xu You began to analyze the original modeling and simulation structure, as well as the actual measurement of the crosstalk part.
The structure of this part includes dielectric substrate, superconducting layer, vacuum part, control line and so on.
There are many properties involved and need to be measured.
For example, the electrical insulation properties, spatial structure, chemical properties, dielectric constants, etc. of dielectric materials.
As for superconducting materials, in addition , the setting of the electrical conductivity and magnetic permeability of the superconducting material is also a key issue.
Because in theory, after a superconducting material enters the superconducting state, the theoretical superconducting conductivity is infinite and the magnetic permeability is 0.
But in reality, both electrical conductivity and magnetic permeability have a specific value and have a certain degree of volatility.
It is very difficult to carry out accurate modeling and simulation.
During this period, Xu You repeatedly carried out measurement, modeling and debugging work, and communicated with Han Shubin, Chang Xiaoping and others many times.
With the joint efforts of Xu You, Han Shubin, Chang Xiaoping and others, the modeling and simulation of the crosstalk part was finally completed.
After completing this part of the modeling work, the team began to conduct crosstalk simulation tests.
In addition to Xu You, Han Shubin, Chang Xiaoping and others were also participating in the simulation experiment on site.
"Academician Han, Engineer Chang, after many adjustments and comparisons, I finally set the conductivity simulation value to 1.26×10^10 S/m and the magnetic permeability simulation value to 9.38×10^(-9)H/m. Let's simulate the effects of excitation at different ports on these three control lines."
"Okay, Xu You, please start your test."
Xu You first excited port 1 and closed ports 2 and 3 at the same time, and used simulation modeling to simulate the magnetic fields on these three control lines.
As Xu You operated, various data on the three detection lines appeared synchronously on the screen.
Through observation of the magnetic field at the Josephson junction location.
It can be seen intuitively that the crosstalk isolation between every two control lines.
“It’s so accurate!”
After seeing the data on the screen clearly, Han Shubin couldn't help but exclaimed.
The simulated value of crosstalk isolation in Xu You's model is very close to the value measured in previous experiments.
After seeing the data, Chang Xiaoping opened his mouth in surprise.
As a top programmer, Chang Xiaoping knows how difficult it is to simulate this model accurately.
This not only requires solid computer knowledge, but also requires a very proficient mastery and application of knowledge such as quantum physics and electromagnetism.
In order to further verify the accuracy of the model and avoid accidental occurrences, Xu You then excited ports 2 and 3.
Similarly, the crosstalk isolation simulated in these two times is also very close to the actual measured value.
Seeing such results, everyone in the laboratory was very excited.
"After exciting three different ports, the data obtained are very accurate, which basically confirms the accuracy of this simulation modeling. Xu You, fortunately I found you, I knew my choice would not be wrong."
Han Shubin praised Xu You highly in front of everyone in the laboratory.
At this moment, all the staff in the laboratory were full of admiration for Xu You.
Before this, they had all heard of Xu You's abilities, but had never witnessed Xu You's power with their own eyes.
Some people even doubted Xu You's ability because of his age, thinking that Xu You had only made some theoretical achievements and was not as amazing as the legend said.
This time, they would never question Xu You again.
Of course, Han Shubin deliberately said these words in front of everyone not only because he was in a good mood, but also to help Xu You establish his position in the project team.
Otherwise, some people would really think that Xu You was just here for an internship.
In Han Shubin's mind, Xu You is not the core pillar of the island plan.
But it is definitely a key to success.
Han Shubin admitted in his heart that even he could not compare with a talent like Xu You.
"Academician Han, I would like to continue to optimize this simulation modeling, and then conduct research on improving isolation."
Xu You's expression was very calm, and he did not show much joy over the results of the initial version of the simulation modeling.
It's like taking a very difficult mock exam and only scoring 95 out of 100.
Although you may be ranked first, there is nothing to be happy about. Instead, you should think about how to continue to improve.
After all, there is still a lot of room for improvement.
After two rounds of optimization and improvement, Xu You was finally basically satisfied with the simulation modeling.
The next question is how to suppress magnetic field crosstalk and improve the isolation of crosstalk.
After deep thinking, Xu You identified the main problem.
To put it bluntly, this is a problem of electromagnetism.
Because electric current has a magnetic effect, when current flows through a control line, a magnetic field will be generated, which will affect other control lines.
Of course, although the principle is easy to understand, it is not so simple to solve this problem well.
How to adjust the direction of current to reduce the crosstalk as much as possible is a very complicated science.
