Chapter 549

Finding a different way?

Professor Lu was slightly stunned, not quite understanding what Gu Lu meant by this.

Gu Lu smiled faintly and said, "Professor Lu, don't worry, when I finish talking later, you should understand what I mean." ”

In fact.

After learning all the knowledge in the field of qubit coding yesterday afternoon, Gu Lu has been thinking about this problem.

Charge qubit coding, as well as spin qubit coding, these two mainstream encoding methods obviously have their own shortcomings.

And it just so happens that the advantages and disadvantages of the two can complement each other.

The idea of combining the two coding methods naturally came to Gu Lu's mind.

At that time, Gu Lu certainly knew that this idea had been tried by many people before, but no one succeeded, and the difficulty was undoubtedly quite large.

But Gu Lu still chose to give it a try.

Even if you fail, you have nothing to lose.

But once it succeeds, it's blood-earned!

Anyway, with the existence of Ai Liang and others, Gu Lu was not worried that there would be no experimental plan to use at that time.

With the mentality that she would not get pregnant if she tried it, Gu Lu went boldly and gave it a try.

I don't know if I don't try.

After trying it, Gu Lu found that this problem was not as difficult as he imagined!

At the beginning, Gu Lu tried the traditional method, and after finding that he had no clue, he began to find another way and use some unconventional solutions.

Countless inspirations flashed through Gu Lu's mind.

Gu Lu can grab it with a quick grasp.

As a result, in this state of inspiration, Gu Lu's work efficiency is quite high.

A seemingly feasible plan gradually emerged under Gu Lu's conception.

Different from the purely physical methods used by previous researchers in this field, the new scheme conceived by Gu Lu combines many mathematical elements.

In simple terms.

It is Gu Lu who uses a more mathematical language to act as the main skeleton of the new scheme.

In this way, a difficult problem in the field of qubit coding becomes a mathematical problem.

As the world's top mathematician, Gu Lu is of course very handy in dealing with mathematical problems.

After one night and one day of meetings, Gu Lu finally completed the theoretical framework of the new plan.

Then it's time to unveil it and present it to the world.

............

Gu Lu exhaled lightly, held the marker pen and began to explain the new plan under the shocked eyes of everyone.

In fact, the principle of combining the two qubit coding methods is not complicated, and simply put, the white swirl state of multiple electrons is used to form a parallel or quasi-parallel energy level structure, so as to improve the anti-interference ability of the qubit to charge noise. “

At the same time, the difference in charge distribution in different states is used to measure the qubits. ”

Everyone understands this truth.

But they still didn't understand how Gu Lu realized it.

It's too hard......

It is basically impossible to come up with a practical solution in just one day.

Actually, let alone a day.

If they come, even if it is a year, they may not be able to come up with a feasible plan.

The curiosity of the crowd intensified.

Gu Lu, who noticed the change in everyone's eyes, just shook his head and smiled, and then continued.

Gu Lu first drew a schematic diagram on the side of the blackboard, and then pointed, "Let's talk about the spin qubit coding part first." ”

"One thing we all know is...... In this way, a spin quadruple state with a spin quantum number of S=3/2 is formed, and the spin components of these four states are respectively. ”

"Next, we introduced the concept of Hamiltonian,...... From the not too complicated calculations, we can get the Hamiltonian of the three-state-based system as:

H1=(2△l，△t/2，e／2)

H2=(-r/△2，-2/r+&Er)

H3=......”

Gu Lu narrated step by step in an orderly manner.

And the people in the conference room below became more and more awkward the more they listened.

It's not that Gu Lu's narration is full of loopholes.

On the contrary, what Gu Lu said on the blackboard was quite rigorous.

One logical ring after another is strung together, so that people can't find any faults.

But that's where it feels awkward.

The content of Gu Lu's exposition is so rigorous that it seems that he is not discussing a physical problem, but a mathematical problem!

That's right, math problems!

Looking at the dense mathematical formulas on the blackboard, everyone finally realized where that awkward feeling appeared.

That's because Gu Lu was too 'physical' when he talked about his plan.

Instead, it looks 'math'.

It's normal for formulas and numbers to appear in physics.

But if the blackboard is full of formulas, it will be very unscientific.

And look at the law, which is a Hamiltonian and a spin component, and there are so many data parameters to be set.

Obviously, it can be seen that Gu Lu completely treats this problem as a mathematical problem!

Could it be that this is what Gu Lu just said...... Take a different path!

............

Gu Lu's narration continued.

Although Gu Lu's theory is not too complicated, this is for Gu Lu himself.

But after all, the people in front of him were physicists, not mathematicians, so it took a lot of time for Gu Lu to understand and digest the many formulas written on the blackboard.

Therefore, it took more than half an hour for Gu Lu to enter the final stage of the elaboration of the experimental plan.

“...... Through the interference fringes obtained from the above experiments, we can obtain the amount of detuning corresponding to the pulse height converted from the voltage-energy ratio, and after obtaining this parameter, by substituting it into the previous equation 11.3, we can obtain a qubit coding equation with extremely high universality. ”

"In this equation, x is the amplitude of the pulse curve, y is the evolution time, and z is the oscillation frequency......"

When the final formula was presented in front of everyone, everyone's eyes widened in unison.

It worked!

It really worked!

An incredible scene happened in front of everyone's eyes.

That is, Gu Lu really used a partial mathematical method to come up with a set of practical experimental schemes.

Everyone listened carefully to the whole process told by Gu Lu, so it was obvious that there were no obvious loopholes in Gu Lu's whole plan.

It can be said that Gu Lu's plan, in the eyes of everyone, is very feasible for the time being.

One side of the conference table.

Professor Xie swallowed hard.

He didn't expect that Gu Lu would break his doubts and really create a perfect way to encode qubits.

"Professor Gu, what is this new coding method called?" Professor Lu on the side asked with an excited expression on his face.

Gu Lu smiled slightly, "Just call it, hybrid qubit coding!"