Chapter 546

Ai Liang stood in front of everyone, smiled slightly, and then spoke.

"The solution I want to introduce is a way to use non-adiabatic pulses to encode charge qubits. To put it simply, it is to use non-adiabatic voltage pulse sequences to control charge qubits."

"The specific principle is this..."

Ai Liang drew a simple schematic diagram with a marker on the small blackboard in front of him, and then introduced it.

"By applying voltage pulses to electrodes ul or u5 (or to both ul and u5 at the same time), we can change the voltage intensity on u1 and 135, thus changing the detuning amount ￡, and then...

"

It took Ai Liang about ten minutes to explain his experimental plan, which can be called "non-adiabatic pulse charge qubit encoding".

Compared with the previous plan introduced by Professor Xie, Ai Liang's experimental plan has a high degree of completeness.

If Professor Xie's experimental plan only has a skeletal framework.

The plan that Ai Liang has just explained now almost has existing bones, and nearly half of the bones are still covered with flesh and blood.

To know.

It has only been less than a day since I received the assignment from Academician Guo.

Ai Liang can perfect the plan to this extent, which is already a very weak person.

and.

This experimental plan itself is also extremely feasible.

Ever since, after Ai Liang, who was standing in front of everyone, finished describing the plan, everyone below showed expressions of admiration and admiration.

Ai Liang, who noticed this change in everyone's eyes, felt completely satisfied in his heart.

Feeling the admiration in everyone's expressions, Ai Liang instantly felt that his stay up all night yesterday to come up with this experimental plan was completely worth it.

A rare smile appeared on Ai Liang's face.

…………

"My plan is roughly like this. Although the main framework is fine after I deduced it, there are still many details that have flaws. I hope you can correct me." Ai Liang said.

Everyone nodded.

Then based on the theory described by Ai Liang in the experimental plan, we discussed and improved some details of the plan.

at last.

After a long discussion, another complete plan was put in front of everyone.

Looking at the brand new experimental plan in front of them, everyone in the conference room fell into hesitation.

Ai Liang's experimental plan for "non-adiabatic pulse charge qubit encoding" is undoubtedly the most perfect plan so far in everyone's opinion.

Through non-adiabatic voltage pulse sequences, qubits are redefined and encoded, thereby increasing the operating speed of quantum computers.

Comparatively speaking, if this process is to be realized, it will be much simpler than the 'microwave resonance transition charge qubit encoding' proposed by Professor Xie before.

This means that using Ai Liang's experimental plan, the computing speed of quantum computers can be reduced to the picosecond level in a relatively simple way.

but……

Then again.

Ai Liang's experimental plan is not perfect.

Otherwise, everyone would have already made the decision to adopt Ai Liang's experimental plan, instead of falling into hesitation now.

Ai Liang's experimental plan has obvious advantages, but its shortcomings are also obvious.

The shortcoming of Ai Liang's experimental plan lies in the performance parameter of quantum computers called 'coherence time'.

That’s right!

Ai Liang's experimental plan can indeed use a relatively simple method to increase the operating speed of the quantum computer to the order of picoseconds. However, after increasing the operating speed of the quantum computer in this way, it will trigger a series of

chain reaction.

The first thing that bears the brunt is the shortening of coherence time.

Mentioned it before.

The performance parameter of coherence time is like a Gill. If it is too long, it is useless, but if it is too short, it will not work!

Once Ai Liang's experimental plan is adopted, it is obvious that the coherence time will shorten as the operating speed increases.

When the operation speed increases to the order of picoseconds, the coherence time will also be shortened to a quite dangerous value.

Of course, Ai Liang is not stupid, and it is impossible not to realize this.

But the reason why Ai Liang still adopts this scheme is very simple, that is, in this scheme, the reduction in the performance parameter of coherence time is barely within the acceptable range of everyone.

To put it simply, the impact of shortening the coherence time in the experimental plan on the overall performance of the quantum computer has not exceeded the bottom line in everyone's mind.

If the bottom line is not exceeded, it means there is still the possibility of negotiation.

If the coherence time was so low that it would cause the quantum computer to stop running, everyone would of course unanimously reject it, but now the parameter 'coherence time' is stuck at a point where everyone can accept it or not, which makes everyone quite hesitant.

and confused.

In the conference room, after everyone discussed for a long time, no one came to a unified decision.

At this time, it was Ai Liang's turn to take charge of the overall situation.

"Then my plan is pending for the time being. My plan does still have many shortcomings. If a better plan comes out in the future, it will of course be better."

Ai Liang said this very modestly, but in his heart Ai Liang was already happy.

A better solution?

Ai Liang thought it would be impossible.

As a researcher with the most experience in the field of qubit coding among everyone present, this experimental plan is already the best one he can think of in one day.

As for a better solution, maybe there is one, maybe there isn't.

But even if there is, it is not something that everyone present can think of in one day.

The meeting is still going on.

Just as Ai Liang guessed in his heart, there was no better plan in the future, not even one that was as good as Professor Xie's plan.

By the time the meeting reached the final stage, most of the plans had been rejected by everyone, and only three sets of plans were left in front of everyone.

One set belongs to the 'microwave resonance transition charge qubit coding' proposed by Professor Xie, the other set is the 'non-adiabatic pulse charge qubit coding' proposed by Shi Ai Liang, and the last set is the 'linear coupling three-dimensional code' proposed by a team member.

Quantum dot spin qubit encoding'.

There are three sets of schemes, each with its own advantages and disadvantages, two of which are charge qubit encoding and one is spin qubit encoding.

Of these three plans, of course more people are more inclined to Ai Liang's experimental plan.

Ai Liang coughed lightly and was about to ask everyone to vote on these three plans, but when he glanced at Gu Lu, who had not said a word from beginning to end, he suddenly said, "Professor Gu, do you want to say something?"
Chapter completed!