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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 kept exactly the same.

After the excitation started, everyone turned their attention to the test equipment.

Among them, the most important data is the 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 being shocked.

It has 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 newly designed by Xu You might improve the crosstalk isolation to a certain extent.

But I didn't expect that the increase could be so obvious.

From this point of view, the project team's choice to build a 1000-qubit superconducting quantum computer is somewhat conservative.

It is completely possible to hit 2000 qubits again.

After seeing the desired result, 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 also a complete reproduction of the real scene.

If Xu You can always maintain this incredible ability.

That will undoubtedly add a powerful weapon to himself in the future scientific research.

Immediately afterwards, Xu You excited the ports 2 and 3 respectively.

Like port 1, the following 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 affirm Xu You's achievements, and immediately began to arrange new tasks.

Xu You...that's too powerful! Chang Xiao said calmly.

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

But Chang Xiaoping also knew how difficult this was.

The 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 could still achieve such an effect.

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

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 fully assembled yet.

But it is already possible to test the computing power.

As long as it can pass the computing power test and confirm that it can handle various large-scale computing tasks, it will not be too far from practicality.

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

For a complete comparison, the computing power of the new generation of quantum chips is different from that of the previous generation, and they perform exactly the same tasks.

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

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 the staff member said, Han Shubin couldn't help being very surprised.

Already done? So fast? How long did it take?

Xu You never expected this.

It seems that Han Shubin has just given the instruction to start, and the mission is over.

Three seconds. To be precise, 3.06 seconds.

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

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

Of course, if it is the current top supercomputer, it will 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 asking:

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

It will take 100 years. Han Shubin said lightly.

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

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

Academician Han, in this way, the speed of the new generation of superconducting quantum computers is one billion times faster than that of supercomputers?

That's right, it's basically such a relationship. So why do we attach so much importance to the project of quantum computers? This is a project that may change the pattern 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 necessarily 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 still many combinations of elements, and it is simply not up to the calculation at present.

Because if you want to calculate everything, I don’t know how many years will pass.

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

If superconducting quantum computers really solve this problem.

The world of science and technology is really going to a new era.

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

Instead, fidelity measurements continue.

Just efficient computing speed is not enough.

If you want to really put it into practical use, high fidelity is a problem that must be considered.

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

In the measurement of fidelity, the fidelity of the single-bit gate and the fidelity of the double-bit gate need to be measured respectively.

In general, the fidelity of double-bit gates is lower than that of single-bit gates.

When the logic gate error rate drops by an order of magnitude, the probability of outputting wrong results 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 explained that its practical significance is relatively high.

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

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

Hearing this news, Xu You felt a little disappointed.

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

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

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

But Han Shubin's expression was very relaxed, as if he didn't care about it.

Xu You, your set of quantum error-correcting codes hasn't been used yet.