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The research on Haidao No. 2 quantum computer has been nearly half completed, and it will not be too long before the next generation of quantum computer comes out.

If nothing else, we will continue to maintain a leading position in the field of superconducting quantum computers.

The research on optical quantum computers is expected to greatly increase the upper limit of quantum computing speed.

With the foundation of the previous success of Godson G1, Xu You is also full of confidence in this research.

After making these decisions, Xu You once again summoned the members of the "Sunjing" project team to Jijing University and held another meeting.

At the meeting, Xu You clarified the direction of the project, made a plan for the next stage, and completed the assignment of tasks.

Wang Xiangwu's quantum physics laboratory will play an important role in the "Sunjing" project.

In order to facilitate Han Shubin and his team's research in Jijing University, Xu You specially arranged for Cui Ying to help them reserve a temporary room in the family courtyard of Jijing University.

If the work is carried out too late, they can directly live on the campus of Jijing University.

After arranging various tasks, everyone entered into a state of intense research.

In order to manufacture an optical quantum computer with high performance and high application value, the most important thing is to solve the problem of optical quantum chips.

There is still a big difference between the optical quantum chip used in the optical quantum computer and the Godson G1 used in the Fulong mobile phone.

Although Godson G1 is a programmable optical quantum chip, in order to be able to program, Xu You had to sacrifice the computing power of the chip when developing it.

It greatly simplifies the complexity of the optical quantum chip circuit and reduces the scale of the circuit.

The same method, directly applied to optical quantum computers, will definitely not work.

In order to solve these problems, Xu You, Han Shubin, Wang Xiangwu and other experts in various industries researched ways to solve the problems.

"Mr. Xu, with the increase in the complexity and scale of integrated optical quantum chip circuits, the calibration of the phase shifter on the optical quantum chip is a very difficult problem."

From a professional point of view, Wang Xiangwu gave a key issue of the current research.

"Yes, this is indeed a very difficult problem. When I was studying the Godson G1, I also simplified the circuit of the optical quantum chip in order to avoid this problem."

In the following research, this is destined to be an unavoidable problem.

At this time, the skills of brain simulation are of no use.

Xu You worked hard to obtain all the information he could get, and in the state of deep learning, he thought repeatedly.

"The key to the problem is to be able to calibrate the phase shifter."

Only in this way can the high fidelity of photons be guaranteed.

In the actual optical quantum chip circuit, the phase shifter adopts multiple cascaded modes, and Xu You calibrates multiple phase shifters at the same time.

Before that, Xu You needs to solve the calibration problem of a single phase shifter.

In the state of deep learning, Xu You introduced the transmission matrix of the multimode interference coupler through a series of derivations.

Xu You found Zhao Weijia and arranged for him the next work.

"Mr. Zhao, we need to build this optical quantum circuit to verify the current on the phase shifter."

After becoming the person in charge of the project, Xu You also began to pay special attention to various titles.

In this case, it is obviously very inappropriate to call Zhao Weijia "senior brother".

"Okay, Teacher Xu."

Zhao Weijia did not relax in the experiment at all because of the relationship between the two of them.

In scientific research work, we must maintain a heart of awe and take every detail seriously.

After many days of hard work by everyone, Xu You's first inference was successfully verified.

"Mr. Xu, by measuring the ratio of the output power of the two ports to the total output power, we obtained the relationship between it and the current applied to the phase shifter, which exactly corresponds to the previously derived theoretical formula. The scanning current I and After measuring the beam splitting ratio T and performing nonlinear fitting on T and I, the calibration of the phase shifter can be completed."

"Very well, the problem of single phase shifter calibration has been solved. Next, it is the problem of multiple phase shifter calibration."

After learning of this result, Xu You, Wang Xiangwu, Han Shubin and others were very excited.

However, Xu You also knew in his heart that the difficulty of the next research would increase exponentially.

Han Shubin, who has experienced the research of optical quantum computers, is the one who knows the difficulty best.

For so many years, Han Shubin has never had a breakthrough on this issue.

And Xu You actually solved the first problem in such a short period of time.

...

"Mr. Xu, the quantum state of the phase shifter has been verified and confirmed to be consistent with the formula we introduced before."

After another stage of research work, the project team solved several research problems one after another.

One step closer to successfully solving the calibration of multiple phase shifters.

At this time, everyone encountered great challenges in calculating fractional ratios, implementing unitary transformations, and predicting the phase of each phase shifter.

At this time, Xu You stood up again.

After a long period of training, Xu You has been able to let himself enter the state of flow anytime, anywhere, and complete efficient thinking and analysis.

"Professor Xu...what's the matter?"

This is the first time Han Shubin has seen Xu You in such a state of almost sluggishness.

"This is a personal habit of Mr. Xu. When he concentrates on thinking about a problem, Mr. Xu will eliminate all distracting thoughts and devote himself to the problem he is thinking about. Leave him alone and let him think slowly."

Zhao Weijia was used to seeing Xu You in this state, so she didn't feel so surprised.

It's just that compared to before, Xu You seems to have "entered the realm of transformation", and his state is even more mysterious than before.

Han Shubin couldn't believe it. Sure enough, this kind of world-class genius has different working habits from ordinary people.

At this time, Xu You seemed to have discovered something, and suddenly recovered from that "sluggish" state.

Xu You picked up the pen and wrote something quickly on the paper.

A few minutes later.

Xu You put down the pen, and smiled with satisfaction at the conclusion drawn on the paper.

"It's figured out, it's finally figured out!"

Zhao Weijia was the first to come over when he heard the sound.

"Sure enough, it's still the same as before, I can't understand it at all."

Zhao Weijia vaguely remembered the fear of being ruled by Xu You before.

Every time Xu You came up with some strange formula, Zhao Weijia was confused.