My science and technology museum - Chapter 165 Controlling Four Million Qubits

“According to the research opinions given by you, Dean, we have successfully developed a metal composite material with special properties that can isolate the influence of external radiation to the greatest extent.”

“The environment inside this material is very stable through testing.”

“It won’t be disturbed by any factors.”

Thursday, August 4, 2022.

Qixi Festival.

Quantum Computer Laboratory of Data Center in Longhu High-tech Park.

Gu Sanlin pointed to the gray barrel-shaped shell in front of him and introduced its details to Xu Lei.

From the confidence in his words and the confidence on his face, it can be seen that Gu Sanlin is very confident in the results of this experiment and can help the quantum computer project achieve great progress.

It turns out that after Gu Sanlin became a member of the project team and understood the material requirements of quantum computers, he planned to continue research based on the previous special polymer materials.

But after in-depth exchanges with Xu Lei, he resolutely scrapped the previous plan.

Lead the team to research a new composite material.

In the past few months, with all the members working overtime to verify the feasibility through Xingpu, some results were finally achieved.

He did not live up to Xu Lei’s trust.

Xu Lei looked at the barrel-shaped shell at this time, and his initially nervous mood suddenly relaxed a lot.

Knowing that today’s assembly test shouldn’t be a problem.

After all, Gu Sanlin dared to say this, he must have strong confidence in this material.

However, it is worth mentioning that Gu Sanlin was able to make such rapid progress in the field of materials, not only because of Xu Lei’s guidance, but more importantly, during the development process, Xu Lei corrected their wrong route through Xingtong.

Otherwise it would never have been so smooth.

There are so many major quantum computer design industries that Xu Leifan cannot do it himself.

Using Xingtong to point out the research direction to other members of the project team will undoubtedly enable this real quantum computer to be manufactured faster.

“very good.”

“Then let’s replace it with actual testing.”

Knowing the details of the shell made of special metal composite materials, Xu Lei had nothing to hesitate about. After listening to Gu Sanlin’s detailed report, he immediately made the decision.

In the past few months, a dilution refrigerator that does not require liquid helium-assisted cooling has been completed, which can ensure that the environment of superconducting quantum chips is close to absolute zero.

And can operate stably and continuously.

In addition, everyone continues to optimize it and solve minor problems that arise during operation. It is now at the level of a quantum computer.

Hear the sound.

Next to me, Yuan Zhi, Xiao Chengyong and others also looked excited and urged: “After waiting for such a long time, we can finally take this important step today.”

“Lao Gu’s special materials are crucial to the success of our superconducting quantum computer.”

“You’ll know if it’s a mule or a horse when it comes out for a stroll.”

Seeing that the pressure was now falling on him, Gu Sanlin immediately agreed with a smile.

“You will be surprised later.”

“This is a composite material specially researched by the dean based on the characteristics of quantum computers. Naturally, there can be no problems.”

Still maintaining enough confidence and no stage fright at all.

After all, his confidence comes from Xu Lei.

Immediately afterwards.

The project staff opened the refrigeration system and took out the core components inside.

Since the ultra-low temperature control chip and the superconducting quantum chip are already in place, they are naturally installed on the core components at this time. After completing these steps and reassembling them with the shell made by Gu Sanlin’s team, the next step is exciting. Testing session.

Test whether there are still noise effects inside the system during operation and the stability of the quantum state.

certainly.

Xu Lei is optimistic about this result.

After all, before carrying out this operation, the project team had already conducted simulation verification with the help of Xingpu.

The final data obtained fully meets the requirements for normal operation of quantum computers.

Therefore, after completing the assembly, Xu Lei did not wait for the test results with peace of mind, but continued to develop quantum algorithms and quantum operating systems.

Just like ordinary computers, if the quantum chip refrigeration system is hardware, then quantum algorithms and quantum operating systems are software.

Both are equally important for quantum computers.

All of them must be developed before it can be considered a real quantum computer.

As for other hardware devices of quantum computers, such as quantum memory transistors, quantum reversible gates, etc., they are also stored in a low-temperature environment.

While waiting for the chips and special metal composite materials to be in place, Yuan Zhi and Xiao Chengyong were mainly responsible for these components.

Xu Lei has already drawn the main quantum computer model, which makes the hardware development process much easier. It’s like everyone is taking a test together but you get the answer in advance.

What’s more, there is a great god like Xu Lei sitting in charge.

I don’t know how much time has passed.

I saw Yuan Zhi, Xiao Chengyong, Gu Sanlin and others running to Xu Lei excitedly. As soon as they entered the door, they couldn’t wait to shout: “Dean, we succeeded. We built a microwave frequency magnetic field control field on top of the chip to achieve up to four million qubits of spin.”

When he shouted this sentence, Yuan Zhi’s voice was trembling, trembling with excitement to achieve breakthrough progress in quantum computers.

The words just fell.

Before Xu Lei could speak, Xiao Chengyong couldn’t help but exclaimed: “This is simply unimaginable.”

“And in addition to successfully controlling the spin of four million qubits, the quantum state is also very stable, which shows that our research line is correct.”

Seeing the performance of several of them, although Xu Lei had already guessed the result, he was still happy in this atmosphere.

Normally, the magnetic field decreases very quickly with distance, so only those qubits closest to the wire can be controlled.

This means that as more and more qubits are introduced, more wires need to be added, which will take up a lot of space on the chip. Therefore, current research on quantum computers only focuses on controlling dozens or hundreds of qubits.

However, the Longfor Light Quantum Computer developed by Xu Lei solves the traditional wiring problem through ultra-low temperature control chips. In addition to reducing the heat generated, it also frees up more space for the chip.

And through a magnetic control field that transmits microwave frequencies throughout the system, special components are used to reduce the microwave wavelength above the chip to less than one millimeter, thereby converting it into a magnetic field that controls all qubits.

So much so that the Longhu Light can control the spins of up to four million qubits.

And because the magnetic field is very uniform throughout the chip, millions of qubits will have the same level of control.

The theoretical method seems simple, but in fact each small step requires a long time to develop and solve the difficult problems.

That is to say, Xu Lei has mastered all the core technologies in his mind before he can turn it from theory into reality.

Otherwise, it would be so easy, and it would be impossible for global development to still be in the introductory stage after so many years.

Speaking of the exhibits collected in the Science and Technology Museum, the quantum computer can control tens of millions of qubits.

However, although the Light of Longfor can only reach four million, it is definitely a physical device of epoch-making significance.

The birth of quantum mechanics laid a solid foundation for mankind’s fourth industrial revolution in the future. On this basis, mankind invented a new technology.

That is, a quantum computer.

Nowadays, a quantum computer with up to four million qubits is about to be born in Longhu High-tech Park. This achievement is absolutely unimaginable for all mankind.

The hardware issues have been solved, and all that remains are quantum algorithms and quantum operating systems.

This is related to error correction and whether quantum computers can be as convenient to use as traditional computers, and it will also be a more time-consuming part.

Thinking of this, Xu Lei felt it was necessary to calm them down.

After all, the revolution has not yet succeeded.

“It’s only a matter of time that the Longfor Light will become the world’s first true quantum computer, but right now we still have a lot to do.”

“Next, everyone’s focus will be on the development of quantum algorithms and quantum operating systems.”

As Xu Lei’s voice fell, several people naturally realized what their problem was. They quickly adjusted their emotions and repeated their assurances.

“Don’t worry, Dean, we promise to go all out to develop quantum algorithms and quantum operating systems.”

“The dean is right. It’s just about creating a quantum era. It’s nothing to our future technology.”

“I believe that everyone will be very motivated for the next task.”

But just when Xu Lei rearranged the tasks and everyone was about to turn around and leave to give instructions below, they saw Yuan Zhi suddenly stop again.

Seeing this, Xiao Chengyong and Gu Sanlin also showed some doubts in their eyes, wondering what else Yuan Zhi had going on.

Subconsciously they stopped.

Yuan Zhi didn’t care about the performance of the other two people. He turned around and asked Xu Lei tentatively: “Dean, the Longhu Light project has made such a breakthrough, we want to announce this news to the outside world. ?”

When these words reached the ears of Xiao Chengyong and others, their eyes suddenly lit up and they immediately agreed: “Yes, Dean, ever since we announced our research on quantum computers, the outside world has not been very optimistic about it. This time can just prove our strength in the quantum field.” .”

After listening to what the two people said, Xu Lei naturally understood what they meant.

The research results of Longfor Light will definitely be announced to the outside world in the future, proving that it has real quantum computing capabilities.

But now is not the time.

Although the news of controlling up to four million qubits is enough to send the world into madness, after all, the software has not yet been completed and has not reached the quantum computer state in Xu Lei’s mind.

So without much thought, he waved his hand and said to the two of them: “There is no hurry now. It will not be too late to announce it after we have truly realized quantum computing.”

“I think this time shouldn’t be too long, what do you think?”

I recommend a new book by Miao Miao, a Naruto fanfic. If you like it, you can read it.