Chapter 484

Gu Lu hung up Simon's video call.

Regarding the matter of becoming a visiting scholar at the University of Bonn, Gu Lu could only shirk it due to time constraints.

This actually made Professor Lucas's wishful thinking somewhat in vain.

but……

Gu Lu promised Simon that when he returned to mathematics again, he could go to Germany to stay for a while.

Simon was very happy when he heard what Gu Lu said.

I don't know if it's because he can see Gu Lu again, or because Gu Lu is willing to come to their university.

After ending the video call with Simon, Gu Lu flipped through the pile of experimental data on the desk.

There are eleven pieces of experimental data in total.

It includes a total of eleven experimental operations conducted by Academician Guo’s team on this topic.

Eleven experiments, all ended in failure.

And all eleven times it was a complete failure.

Gu Lu briefly looked through the experimental data in his hand.

From this thick pile of information, it can be clearly seen that these eleven experiments have no direction at all.

There are no fixed rules for changes in experimental parameters.

Like a headless fly, wandering around aimlessly.

It's completely like a lottery-like experiment.

Just enter a string of experimental parameters and wait for the draw.

The chances of winning are extremely low.

Gu Lu frowned and flipped through the eleven pieces of experimental data.

How to say it.

There is very little that Gu Lu can learn from it.

Because not only did these experiments all fail, but the results were far from the desired results every time.

So after looking through these data, Gu Lu only knew what not to do, but he didn't know how to do it correctly.

"well!"

Sighing, Gu Lu put aside the thick pile of data materials.

From this pile of data, Gu Lu couldn't get any useful information at all.

Instead of doing this, it's better to think of your own plan.

Gu Lu held his chin, stared blankly at the computer screen, and began to think.

The spin-orbit coupling and net nuclear spin phenomena inside graphene will affect the number of qubits that can exist inside graphene.

If you want to increase the number of qubits that can exist inside graphene, you must eliminate this effect.

But how to eliminate it?

The eleven failed experimental data materials handed to him by Ai Liang proved that it is a very difficult task to eliminate the net nuclear spin phenomenon inside the graphene material.

The reason is simple.

Because net nuclear spin is one of the important properties of graphene nuclei.

The atomic nucleus is composed of protons and neutrons. Both protons and neutrons have a certain spin angular momentum. They also have orbital motion within the nucleus and correspondingly have orbital angular momentum.

Therefore, the sum of these angular momentums is the spin angular momentum of the nucleus, which reflects the intrinsic characteristics of the nucleus.

Once the net nuclear spin site of the nucleus is eliminated, it obviously means that the characteristics of graphene atoms will be eliminated.

Graphene's excellent electrical conductivity as a semiconductor material will no longer exist.

This kind of picking up sesame seeds and throwing away watermelons is obviously not the original intention of improving the performance of graphene semiconductor materials.

but……

The phenomenon of net nuclear spin does affect the number of qubits that a graphene semiconductor can accommodate.

This becomes a very contradictory question.

Eliminate the net nuclear spin phenomenon, and the excellent conductivity of graphene semiconductor will no longer exist.

But if it is not eliminated, the number of qubits that can be accommodated will be strictly limited.

Academician Guo's team came up with a theoretically feasible solution when addressing this problem.

That is to not completely eliminate the net nuclear spin site of the atomic nuclei inside graphene, but only eliminate a part of it.

This not only ensures the excellent conductivity of graphene itself, but also increases the number of qubits that can be accommodated.

But the ideal is very full, and the reality is very skinny.

The eleven failed experiment records in front of Gu Lu are evidence.

Although this solution is theoretically feasible.

But the difficulty lies in finding the right balance between the two.

How much net nuclear spin phenomenon needs to be eliminated to ensure that the number of qubits can be increased without affecting conductivity.

This ‘quantity’ is difficult for people to grasp.

As a result, all eleven previous experiments by Academician Guo's team ended in complete failure.

Moreover, among the eleven experimental data, seven or eight of them showed that the graphene semiconductor not only lost its excellent conductivity, but also the number of qubits it could accommodate did not increase.

Neither fish nor bear paws were caught.

Gu Lu found some pieces of scrap paper from the side of the study room, spread them flat on the table, used a pen to draw a diagram of the internal atomic structure of graphene on the scrap paper, and then listed several formulas.

Gu Lu is trying to calculate the equilibrium point through the language of mathematics.

Lines of formulas were listed by Gu Lu on the paper.

Half an hour later...

Gu Lu crumpled the messy scrap of paper in front of him into a ball and threw it into the trash can.

Then Gu Lu leaned back on the chair.

No, not at all!

Gu Lu's attempt ended in failure.

Because he is currently deriving calculations through formulas in mathematical language, and cannot figure out the specific location of the equilibrium point at all.

At least not now.

The reason is that there is too little experimental data for reference.

With the support of very little experimental data, Gu Lu was unable to derive a universal formula at all.

In this case, let alone finding the equilibrium point.

Although the eleven pieces of experimental data Ai Liang handed him were quite large, most of them were useless data, and there were too few usable data and parameters.

As a result, the derivation of Gu Lu's formula could not proceed at all.

Gu Lu began to try another method.

That is to build a mathematical model.

Opening matb, Gu Lu typed in the code, entered parameters, and quickly built a basic mathematical model.

Then Gu Lu clicked Run.

The results of the operation also did not satisfy Gu Lu.

The reason is that there is too little available data.

"It seems that it still requires multiple experiments!" Gu Lu rubbed his chin with his hand and said softly.

But……

Gu Lu realized another problem.

If we really want to obtain effective data through multiple experiments, wouldn't it be exactly the same as the method used by Academician Guo's team?

However, conducting such an experiment not only requires a lot of time, but also cannot guarantee that the data obtained in each experiment is valid.

Because the location of that ‘balance point’ is within a fairly large range.

It is very likely that after five experiments, only one set of valid data can be obtained.

This kind of efficiency is too low.

Moreover, according to the estimation of the law of care, in order to build a complete mathematical model, at least nearly fifty sets of valid experimental data are needed.

This workload...
Chapter completed!