At the same time, port 2 and port 3 will be closed.

In order to ensure that the experiments before and after can be compared, except for the different circuit structures, other factors must be exactly the same.

After starting the excitation, everyone turned their attention to the testing equipment.

Among them, the most important data is crosstalk isolation.

This represents the degree of isolation between control lines for crosstalk.

The larger the data, the better the isolation.

After seeing the data on the screen, everyone couldn't help but feel shocked.

"It actually reached 32db!" Han Shubin said heartily.

Before this, in the original control line circuit, the crosstalk isolation between control lines was only 12db.

Han Shubin thought that the circuit structure designed by Xu Youxin might improve the crosstalk isolation to a certain extent.

But I didn't expect that the improvement would be so obvious.

From this point of view, the project team’s choice to build a 1,000-qubit superconducting quantum computer is somewhat conservative.

It is completely possible to hit 2000 qubits again.

After seeing the results as expected, Xu You breathed a sigh of relief.

This not only proves that Xu You's optimized control line circuit is very effective.

It also shows that the scene simulated in Xu You's mind that day was a complete reproduction of the real scene.

If only Xu You could maintain this incredible ability.

This will undoubtedly add a powerful weapon to myself in the future of scientific research.

Immediately afterwards, Xu You excited port 2 and port 3 respectively.

Just like port 1, the next two times also improved the crosstalk isolation by about 20db.

Such experimental data is enough to illustrate the great significance of Xu You's optimized circuit.

"Start the computing power test of superconducting quantum computing immediately!"

With excitement, Han Shubin didn't even bother to acknowledge Xu You's achievements and immediately started arranging new tasks.

"Xu You...this is too awesome!" Chang Xiao said calmly.

This ability to design circuits is not within the scope of work of a programmer like Chang Xiaoping.

But Chang Xiaoping also knows how difficult this is.

Members of the entire project team have not been able to design such an optimized circuit for so many days.

However, Xu You was able to design it within a few days of leaving the project team, and it was able to achieve such an effect.

If he hadn't seen it with his own eyes, Chang Xiaoping would never have believed it.

Next, Xu You and Han Shubin participated in the computing power test of superconducting quantum computing.

Although the new generation of quantum computers is not yet fully assembled.

But it is already possible to test the computing power.

As long as it can pass the computing power test and determine that it is capable of various large-scale computing tasks, it will not be too far away from practical use.

This time, the computing task performed by the quantum chip is a quantum random circuit sampling task.

For complete comparison, the new generation of quantum chips has different computing power from the previous generation, but performs exactly the same task.

After pressing any start command, Han Shubin, Xu You and others waited for the final calculation results.

But this time, the time required to complete the task was far beyond everyone's imagination.

"Academician Han, the calculation has been completed."

Hearing what this staff member said, Han Shubin couldn't help but be very surprised.

"It's done? So quickly? How long did it take?"

Xu You never expected this.

It seemed that the mission was already over as soon as Han Shubin gave the instruction to start.

"A time of 3 seconds. To be precise, it is 3.06 seconds."

"3 seconds? The speed is actually 100 times that of the previous generation superconducting quantum computer!"

Han Shubin remembered clearly that it took a full 300 seconds to perform the same computing task.

Of course, if it were a top-level supercomputer, it would take a full 100 years.

From 100 years, to 300 seconds, to 3 seconds.

What a great leap this is!

At this time, Xu You couldn't help but ask:

"Academician Han, if a supercomputer performs such a task, how long will it take?"

"It will take 100 years." Han Shubin said lightly.

Hearing Han Shubin's words, Xu You couldn't help but feel a tremor in his heart.

Through calculation, Xu You quickly calculated the speed difference between them.

"Academician Han, so to speak, the speed of the new generation of superconducting quantum computers is one billion times that of supercomputers?"

"Yes, it is basically such a relationship. So why do we attach so much importance to the quantum computer project? This is a project that has the potential to change the landscape of human science and technology!"

At this time, Xu You suddenly thought of another question.

If we say that superconducting quantum computers can also complete calculations on superconducting materials.

It is very likely that the superconducting critical temperature of superconducting materials will achieve a new breakthrough.

Even superconductors close to room temperature are not definitely impossible to find.

In the past period of time, there has been no new breakthrough in the search for superconducting materials.

Part of the reason is that it is limited by the computing power of supercomputers.

There are many ways to combine elements that are simply not yet calculated.

Because if I wanted to finish it all, I don’t know how many years would have passed.

Not to mention, how much power will be consumed during this period.

If superconducting quantum computers really solve this problem.

Then the world's technology is really going to move into a new era.

At this time, Han Shubin did not end the experiment immediately.

Instead, we continue to measure fidelity.

Just efficient calculation speed is not enough.

If you want to truly put it into practical use, high fidelity is an issue that must be taken into consideration.

Otherwise, errors are prone to occur during the transmission of information, which will have a great impact on the stability of the quantum computer.

In the measurement of fidelity, it is necessary to measure the fidelity of single-bit gates and the fidelity of double-bit gates respectively.

Generally speaking, the fidelity of two-bit gates is lower than that of single-bit gates.

When the logic gate error rate drops by one order of magnitude, the probability of outputting an incorrect result will drop several times.

It is generally believed that 99% fidelity is the threshold for fault-tolerant quantum computing.

As long as the fidelity of the double-bit gate is higher than 99%, it can be seen that its practical significance is relatively high.

After a series of tests, the fidelity test results of the new generation of quantum chips came out.

"Academician Han, the fidelity of single-bit gate is 99.02%, and the fidelity of double-bit gate is 98.56%."

Hearing the news, Xu You felt a little disappointed.

The fidelity of the two-bit gate is almost 99%.

Even compared to the previous generation of superconducting quantum computers, the fidelity has dropped somewhat.

Xu You thinks it may be because the number of qubits has greatly increased.

But Han Shubin's expression was very relaxed and he didn't seem to care about it.

"Xu You, your set of quantum error correction codes has not been used yet."
Chapter completed!