Chapter 413 Do You Remember Huang Sibai?
Unexpectedly, a few years later, Zhao Weijia had become a teacher in the quantum physics laboratory.
But I still can't understand the mysterious formula proposed by Xu You.
At this time, Wang Xiangwu also came over and checked Xu You's derivation process on paper.
"Teacher Xu, you determined the value of rN-1 by scanning the current of phase shifter N-1 and measuring the corresponding value of the splitting ratio T?"
After all, Wang Xiangwu is the leading professor of the quantum physics laboratory. After replacing his artificial heart with the powerful "rocket heart", he has almost inexhaustible energy.
Wang Xiangwu got to the point right away, and Xu You nodded repeatedly after listening.
"That's right, Mr. Wang. By the same logic, if we record the quantum state before reaching N-2 as φN-2, we can also get the splitting ratio of the output terminal Out1..."
Han Shubin also came closer and joined in their discussion.
The three of them are world-class experts in the quantum field and they quickly reached a consensus.
"That's amazing, Professor Xu! The whole derivation process is so fantastic. I never thought of such a derivation idea before!"
"Yes, in this way, we can complete the rapid calibration of multiple phase shifters. And we don't need to consider whether the number of phase shifters is odd or even, because adding π phase to the first and last phase shifters at the same time will not affect the beam splitting ratio T."
Zhao Weijia tried hard to understand the discussion of the three people, but no matter how hard he racked his brains, he could not integrate into the discussion.
In desperation, Zhao Weijia had to give up discussing with the three experts and decided to learn more about it slowly later.
…
After solving the key problems, Xu You and others began to enter the design stage of the photonic quantum chip.
The design concept this time is to increase the chip's computing speed as much as possible while ensuring smooth programming.
This is also the fundamental purpose of Xu You proposing the "Mathematical Classics" project.
The computing speed of the island quantum computer is already very fast, but it is still far from the standard in Xu You's mind.
If you want to solve more complex problems, the faster the computing speed, the better.
During the process of designing this chip, Xu You was constantly conducting simulations to simulate the actual computing effects of this chip.
What made Xu You feel a little bit unbelievable was.
This chip not only achieves an exaggerated computing speed, but also achieves extremely high fidelity at the same time.
According to conservative estimates, the fidelity distribution of the output state exceeds 99.99%.
Such data even far exceeds the Island quantum computer and the Vulture quantum computer just released by IBM.
Once the "Arithmetic" is completed, it will have a dimensionality-reducing impact on the vultures!
After completing the chip design, the next step is chip manufacturing.
"Professor Xu, this photon chip should require an EUV lithography machine due to processing problems, right?"
"Yes, this chip has very high requirements for processing technology. However, because our quantum computer project is not on the Bald Eagle's ban list, there will be no restrictions on the processing of this chip."
EUV lithography machine, that is, extreme ultraviolet lithography machine.
Some chips that require extremely high process technology can only be manufactured using EUV lithography machines.
Although we have not yet independently developed EUV lithography machines, there are still some EUV lithography machines purchased from ASML in China.
Producing just a few chips for quantum computers will not be subject to the same restrictions as producing chips for Fulong mobile phones.
With the chip design drawings, Xu You and others found relevant personnel from Huaxin International.
Huaxin International had no reason to refuse the request to produce this chip.
However, during the trial production process, no ideal chips were produced.
"We have never done this kind of process before, and it is very different from normal silicon-based chips. I am afraid we need to develop a unique processing plan for this photonic quantum chip."
"Well, I'll trouble you guys with this."
Huaxin International is already the company with the strongest chip manufacturing technology in China. If Huaxin International cannot solve a problem, then other domestic chip manufacturers will most likely not be able to solve it.
Before the return, TSMC's technology could not be used by us.
After completing the task, Xu You looked forward to them bringing him good news as soon as possible.
"I don't know when we can build our own EUV lithography machine."
At this stage, due to our rapid development, the West’s chip restrictions on us are becoming increasingly aggressive.
Their goal is to completely exclude us from the world's semiconductor industry chain, curb the development of our technology, and consolidate their so-called "technological hegemony."
If we want to achieve self-sufficiency in the production of high-end chips, EUV lithography is an indispensable technology.
In some ways, EUV lithography machines are even more difficult to make than atomic bombs.
One EUV lithography machine requires more than 100,000 parts, from more than 5,000 companies in more than 30 countries.
It is a very difficult task for us to complete the manufacturing of EUV lithography machines with the strength of a country.
But on this day, during a conversation with Luo Wenkun, Xu You received good news.
"Xu You, do you still remember Huang Sibai?"
"Of course I remember. Isn't he the engineer who worked at ASML? What's wrong?"
"Huang Sibai recently made an important achievement, which brings us one step closer to our own EUV lithography machine."
"Great. Can I learn more about this achievement?"
"Of course, when Huang Sibai has time, I'll ask him to come to Jijing University."
"Okay, there's no need to rush him over. Just focus on his project first. When you have nothing else to do, let him come over."
Thinking that the domestic EUV lithography machine is getting closer, Xu You can't suppress his excitement.
"The engineers who come back from ASML are indeed different."
These researchers who have worked in overseas technology companies have a great advantage in experience.
Even Xu You felt that it was not worth it for the Bald Eagle to use special intelligence personnel to exchange these talents for their return.
But no matter what, this is a deal that benefits both parties.
What Xu You didn't expect was that Huang Sibai would soon arrive at Jijing University.
"Professor Xu, you are looking for me."
"Mr. Huang, aren't you busy with work recently? I told Mr. Luo that there's no need to rush over. Just focus on the work at hand first."
Xu You is not responsible for the research project of EUV lithography machine. He asked Huang Sibai to come over just to learn some cutting-edge knowledge.
