Chapter 546

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

"The solution I'm going to introduce is a way to use non-adiabatic pulses to encode charge qubits, which in simple terms, is to use non-adiabatic voltage pulse sequences to manipulate charge qubits. ”

"Here's how it works......"

Ai Liang drew a simple schematic diagram with a marker on the small blackboard in front of him, and then opened his mouth to introduce.

"By applying a voltage pulse to the electrode Ul or U5 (or both to Ul and U5), we can change the voltage intensity on U1 and 135, thus changing the amount of detuning, and then ......"

It took about ten minutes for Ai Liang to elaborate on his experimental protocol, which can be called 'adiabatic pulse charge qubit coding'.

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

If Professor Xie's experimental protocol is just a skeletal framework.

The set of plans that Ai Liang has just explained now is almost all bones, and nearly half of the bones are covered with flesh and blood.

To know.

It has only been less than a day since Academician Guo received the task.

Ai Liang can improve the plan to this extent, and he is already quite not a tough person.

Moreover.

The protocol itself is also highly feasible.

So, after Ai Liang, who was standing in front of everyone, finished telling the plan, everyone below showed a look of admiration and admiration one by one.

And Ai Liang, who noticed this change in everyone's eyes, felt a full sense of satisfaction in his heart.

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

A rare smile appeared on Ai Liang's face.

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

"My plan is probably like this, although the framework of the main body is no problem after I deduce, but there are still many details in it that are flawed, I hope you will correct it. Ai Liang spoke.

The crowd nodded.

Then, based on the theory described by Ai Liang in the experimental protocol, some details in the scheme were discussed and refined.

At last.

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

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

Ai Liang's experimental scheme of 'non-adiabatic pulse charge qubit coding' is undoubtedly the most perfect scheme so far in the eyes of everyone.

Qubits are redefined and encoded through non-adiabatic voltage pulse sequences, thereby increasing the operation speed of quantum computers.

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

This means that Ai Liang's experimental scheme can reduce the computing speed of quantum computers to the order of picoseconds in a relatively simple way.

But......

Then again.

Ai Liang's protocol was not flawless.

Otherwise, everyone would have already decided to adopt Ai Liang's experimental plan, instead of thinking about the current hesitation.

Ai Liang's experimental scheme has obvious advantages, but the disadvantages are equally obvious.

The disadvantage of Ai Liang's experimental scheme lies in the performance parameter of the quantum computer, 'coherence time'.

That's right!

Ai Liang's experimental scheme is indeed to increase the operation speed of the quantum computer to the order of picoseconds in a relatively simple way, but after increasing the operation speed of the quantum computer in this way, it will trigger a series of chain reactions.

First and foremost is the reduction of coherence time.

It's been mentioned before.

Coherence time is a performance parameter like Jill, it's too long to be useful, but too short to be fine!

Once Ai Liang's experimental protocol is adopted, it is obvious that the coherence time will decrease with the increase of operation speed.

When the speed of operation is increased to the order of picoseconds, the coherence time is also reduced to a rather dangerous value.

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

However, the reason why Ai Liang still uses this scheme is very simple, that is, in this scheme, the shortened value of the performance parameter of coherence time is barely within the acceptable range of everyone.

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

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

If the coherence time is low enough to cause the quantum computer to stop running, of course, everyone will unanimously reject it, but now the parameter of 'coherence time' is stuck at a node that everyone can accept or not, which makes everyone quite hesitant and entangled.

In the conference room, after discussing for a long time, everyone did not come up with a unified decision.

At this time, it was Ai Liang's turn to preside over the overall situation.

"Then my plan is to be determined for the time being, my plan does still have many shortcomings, if there is a better plan in the future, it will be better. ”

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

A better solution?

Ai Liang thought it was impossible.

As one of the most experienced researchers in the field of qubit coding, this experimental scheme is the best one he can think of in one day.

As for better solutions, there may or may not be.

But even if there were, it wasn't something that anyone present could think of in a day's time.

The meeting continues.

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

By the time the meeting reached its 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 second set is the 'non-adiabatic pulse charge qubit coding' proposed by Shi Ai Liang, and the last set is the 'linear coupling three-quantum dot spin qubit coding' proposed by a team member.

There are three sets of schemes, each with its own advantages and disadvantages, two of which belong to charge qubit coding and one set of spin qubit coding.

Among these three schemes, of course, there are more people who are more inclined to Ai Liang's experimental scheme.

Ai Liang coughed lightly, and just wanted everyone to vote on these three sets of plans, but at a glance, he suddenly noticed Gu Lu, who had not said a word from beginning to end, and said as soon as his words turned around, "Professor Gu, do you want to say something?"