Unexpectedly, a few years later, Zhao Weijia has become a teacher in the quantum physics laboratory.

But still can't understand the mysterious formula introduced by Xu You.

At this time, Wang Xiangwu also came over and looked at Xu You's derivation process on the paper.

"Teacher Xu, you determined the value of rN-1 by scanning the current of the phase shifter N-1 and measuring the corresponding beam splitting ratio T?"

After all, Wang Xiangwu is the leading professor of the Quantum Physics Laboratory. After replacing the powerful "Rocket Heart" artificial heart, he has almost inexhaustible energy.

Wang Xiangwu got to the point right away, and Xu You nodded repeatedly after hearing this.

"That's right, Teacher Wang. In the same way, if the quantum state before reaching N-2 is recorded as φN-2, we can also get the beam splitting ratio of the output terminal Out1..."

Han Shubin also came closer and joined the discussion between the two.

The three of them are all world-class experts in the quantum field, and they quickly reached an agreement.

"Awesome, Professor Xu! The whole derivation process is really unimaginable. I never imagined that there is such a derivation idea before!"

"Yes, in this way, you can quickly calibrate multiple phase shifters. And you don't need to consider whether there are an odd or even number of phase shifters, because the first and last phase shifters are

Adding π phase 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 Zhao Weijia racked his brains, he could not integrate into the discussion of the three people.

In desperation, Zhao Weijia had to give up discussing with these three experts and decided to learn more about it later.

…

After solving the key problems, Xu You and others began to enter the design stage of the optical 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's project "Suzhou Sutra".

The computing speed of the island quantum computer is already very fast, but it is still far from reaching the standard in Xu You's mind.

If you want to solve more complex problems, in terms of computing speed, the faster the better.

In the process of designing this chip, Xu You also continued to conduct simulations to simulate the actual computing effect of this chip.

What Xu You also felt a little unbelievable was.

This chip not only achieves exaggerated computing speed, but also achieves extremely high fidelity.

A conservative estimate shows that the fidelity distribution of the output state exceeds 99.99%.

Such data far exceeds even the Island Quantum Computer and the Vulture Quantum Computer just released by IBM.

Once the "Suzhou Sutra" is completed, it will cause a dimension-reducing blow to the vultures!

After completing the design of the chip, the next step is to manufacture the chip.

"Professor Xu, this optical quantum chip should require the use of an EUV lithography machine due to processing technology issues, right?"

"Yes, this chip still 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 processing this chip."

EUV lithography machine, also known as 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.

Simply producing a small number of chips for quantum computers will not be subject to the same restrictions as producing chips for Volon mobile phones.

With the design drawing of the chip, Xu You and others found the relevant personnel of Huaxin International.

Huaxin International has no reason to refuse the request to produce this chip.

However, during the trial production process, the ideal chip was not produced.

"We have never done this kind of process before, and it is very different from normal silicon-based chips. We may need to develop a unique processing plan for this optical quantum chip."

"Well, this is a problem for you."

Huaxin International is already the company with the strongest chip manufacturing technology in China. If there is a problem that Huaxin International cannot solve, then there is a high probability that other domestic chip manufacturers will not be able to solve it either.

Before returning, Sshima Semiconductor's technology cannot be used by us.

After completing this task, Xu You looked forward to them bringing him good news as soon as possible.

"I don't know when we will be able to build our own EUV lithography machine."

At this stage, due to our rapid development, the West is becoming more and more aggressive in restricting our chips.

Their purpose 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 you want to achieve self-production of high-end chips, EUV lithography machines are an essential technology.

To some extent, EUV lithography machines are even more difficult to build than atomic bombs.

An EUV lithography machine requires more than 100,000 parts, and they come from more than 5,000 companies in more than 30 countries.

It is very difficult for us to complete the manufacturing of EUV lithography machines with the strength of a country.

But that day, during the conversation with Luo Wenkun, Xu You got good news.

"Xu You, do you still remember the Huang Sibai from before?"

"Of course I remember, isn't he the engineer who worked at ASML? What's wrong?"

"Huang Sibai has recently made an important achievement, which brings us one step closer to the self-developed EUV lithography machine."

"Great. Can I know about this result?"

"Of course. When Huang Sibai has time, I will ask him to come to Jijing University."

"Okay, there's no need to ask him to come here in a hurry. Just work on his project first. When nothing happens, let him come over again."

Thinking that domestically produced EUV lithography machines are getting closer, Xu You couldn't help but feel excited.

"Engineers who come back from ASML are indeed different."

These researchers who have experience working in overseas technology companies have a great advantage in experience.

Even Xu You felt that it was not worthwhile for Bald Eagle to use special intelligence personnel to exchange for the return of these talents.

But no matter what, this is a deal where everyone gets what they need.

What Xu You didn't expect was that Huang Sibai would soon come to Jijing University.

"Professor Xu, you are looking for me."

"Huang Gong, haven't you been busy with work recently? I told Mr. Luo that there is no need to come here in a hurry, just do the work at hand first."

Xu You is not in charge of the EUV lithography machine research project. He called Huang Sibai here just to learn some cutting-edge knowledge.
Chapter completed!