Chapter 230 99.99%!
When the matter of quantum error correction code was mentioned, Xu You finally reacted.
"Academician Han, I thought this was the data measured after using my quantum error correction code."
"We are still using the same quantum error correction code as before, so the fidelity is still a bit low. However, with the number of quantum bits increased by nearly twenty times, we can still achieve such a high fidelity. I can only say that the new control line circuit you designed has played a very good effect."
This is also the reason why Han Shubin did not want to use too large a number of quantum bits before.
Although each additional qubit doubles the potential power of a quantum processor.
But at the same time, there are many problems that need to be solved.
If we simply increase the number of quantum bits without considering other issues.
The overall performance of quantum chips is likely to decline.
"Xu You, since you edited the quantum error correction code, please help me with this part of the work."
"Okay, Academician Han."
Xu You had the same idea, so he started working on quantum error correction codes together with Han Shubin, Chang Xiaoping and others.
For this new quantum chip, Xu You's quantum error correction code also needs to be improved accordingly.
Of course, this kind of work is not complicated.
In just a few days, the quantum error correction code was improved and well adapted to the new generation of quantum chips.
After the work on the quantum error correction code was completed, Han Shubin organized the second measurement experiment.
In the measurement of the computing speed of quantum chips, the quantum random circuit sampling task is once again performed.
The time taken this time was not much different from the last time, and it still only took about 3 seconds.
Quantum error correction codes do not affect the computing speed of quantum chips, but instead serve to reduce the transmission error rate.
The following fidelity measurement experiment is crucial.
Han Shubin, Xu You, Chang Xiaoping and others all felt a little nervous about this.
If the fidelity of the two-bit gate can reach more than 99% this time, the new generation of superconducting quantum computers can be said to be basically successful.
Otherwise, further research will be needed to break through this requirement before the practical application of quantum computers can be realized.
"Academician Han, the fidelity measurement is over!"
Hearing the staff's words, everyone's heart was lifted.
"What is the fidelity this time?" Han Shubin asked.
"The fidelity of a single-bit gate is 99.99%!"
"99.99%?" Han Shubin asked in surprise.
Even though Han Shubin was mentally prepared, he did not expect that the fidelity of the single-bit gate would be so high after adding Xu You's set of quantum error correction codes.
Such high single-bit gate fidelity has never been seen in any quantum computer in the world.
What’s more, the number of quantum bits is so high.
Xu You was also somewhat unexpected about this.
It seems that this time, the practical application of superconducting quantum computers is really coming.
It stands to reason that if the fidelity of a single-bit gate is so high, then the fidelity of a double-bit gate should not be bad either.
Of course, everything depends on the final result.
"What is the fidelity of the dual-bit gate?" Han Shubin continued to ask.
At this time, there was a hint of trembling in Han Shubin's voice .
"Academician Han, the fidelity of the two-bit gate is 99.84%!"
“99.84%!”
Hearing this number, Han Shubin couldn't help but shout out.
Such high double-bit gate fidelity once again set a new record.
Even quantum computers with only a dozen or twenty quantum bits cannot achieve such high two-bit gate fidelity.
This means that we can not only calculate faster than them, but also more accurately than them.
Even more, due to the discovery and application of new superconducting materials, we can achieve superconductivity at higher temperatures.
In this way, we are also a big step ahead in cost control.
After learning the result, the staff in the laboratory were very excited.
They have been struggling in the field of quantum computers for too long.
During this period, only they themselves know the efforts they have made and the setbacks they have experienced.
At this time, Han Shubin looked at Xu You, his eyes full of respect.
The success of this experiment is the result of the efforts of the entire team, but it is also Xu You’s success.
Although Xu You alone would definitely not be able to build a quantum computer.
But without Xu You, I'm afraid we won't be able to reach this level in five or even ten years.
Xu You is truly the kind of person who can change the entire technological landscape on his own.
"Xu You, thank you for your contribution to the island project! I will report all your achievements to my superiors. Don't worry, you will get the honor and reward you deserve!"
"Yes, if it weren't for Xu You, we really don't know when we can make a breakthrough. This time, whether in terms of computing speed, fidelity, or energy consumption control, we have broken the world record. The quantum computers in the United States can't catch up with ours!"
"Our new generation of young Chinese researchers are really outstanding. With researchers like Xu You, why should we worry that China cannot reach the top of the world?"
At this moment, Xu You was also very excited.
The reason why Xu You was excited was not only because of everyone's praise, but also because the island project had achieved initial success.
Due to the confidentiality of the project, Xu You will not become famous again in the country or the world because of this .
But for Xu You, this is already a very significant thing.
Xu You believes that this is not the pinnacle of his scientific research career, but perhaps just the beginning.
Xu You will continue to make efforts to achieve new scientific and technological breakthroughs for China and even all mankind.
After that, the project team continued to carry out various optimization work for the new generation of superconducting quantum computers.
Wait until all the details are optimized and passed the test.
This generation of superconducting computers can now be assembled and officially put into practical use.
…
Just when the island’s new generation of quantum computers had just completed testing and assembly.
A major news came from IBM in the United States.
IBM's new generation quantum computer, code-named "Osprey", was officially released today.
This news has caused heated discussions around the world.
"Oh my god, IBM's new generation quantum computer, Osprey, has a quantum bit number of 433! This number of quantum bits is more than three times that of the previous generation Eagle!"
