Chapter 815 Crying Children Have Candy

"The premise of Bitcoin decentralization is that the computing power of each distributed accounting center is relatively average. If the computing power of a certain node reaches 51% of the computing power of the entire network, decentralization will fail. Therefore, digital The future of currency competition is actually a competition for computing power.

Because once a party makes a major breakthrough and masters super computing power, it is possible to conquer the other party's digital currency based on blockchain technology. In other words, if we decide to do digital soft sister coins, We must pay more attention to another thing, quantum technology.

So, let's take a look at the development of quantum technology first.

Everyone should know that this year our country’s world’s first quantum satellite is ready to go into space. I talked with Professor Pan Jianwei of Mozi. According to his plan, our country is expected to be the first to build a globalized Guangzhou satellite around 2030. Domain quantum secure communication network, and on this basis, build a quantum Internet with fully secure information.

It can be said that on the track of quantum communication, we are relatively ahead, but let’s look at a data: 1-10 qubits can realize quantum communication, 10-100 qubits can realize quantum perception, More than 100 qubits, entering the quantum computing stage.

From the perspective of numbers alone, our leadership in quantum communication seems to mean that we are leading in quantum technology, but in fact this is not the case. The difficulty of quantum computing lies in algorithms and physical breakthroughs, especially physical breakthroughs.

The physical bit realization of quantum chips is the core bottleneck of quantum computing research. At present, the physical system of quantum computer mainly includes superconductivity, ion trap, silicon quantum dot, neutral atom, light quantum, diamond color center and topology.

Among these various quantum computing physical platforms, superconducting and ion trap routes are relatively leading, but none of them can fully meet the conditions for the practical application of quantum computing technology, and no one knows where the future lies. "

Speaking of this, Meng Qian began to summarize the development of each physical system separately, and sorted out the relevant global technological breakthroughs in the past five years, and thus came to a conclusion, "From the theoretical breakthroughs, we can see that the quantum computing stage Although we are still far away, the United States is ahead of us.

Especially with the joining of companies such as IBM and Google, the Quantum Alliance of the United States has been officially established, and a quantum project led by the United States has entered the fast track. On our side, although the "13th Five-Year Plan" focuses on the issue of quantum technology , however most resources are now focused on quantum communication.

There are only two or three real quantum technology players, and the project allocation is less than 2 billion. If this continues, what do you think will happen?

We still have the reality that we care more about short-term interests in the development of science and technology, but if it is other technologies, it will be fine. This time it involves quantum technology. No matter how offending people, I have to speak out what is in my heart.

Let me say something very realistic. We can see the emphasis on future technology from top to bottom in recent years, but it seems to be the emphasis. The pursuit of immediate benefits is still a common phenomenon in China, but this is wrong. Why? We still face technical barriers to new technologies, because others can invest a lot of energy and financial resources in the technology 20 years later.

In the past, because of our backward technology, we were always forced to concentrate our efforts on big things in industries where others were mature and we were obviously behind. Although we did succeed in many cases, we were always following in the footsteps of others. Slowly, everyone His thoughts seemed to be caught in such a strange vortex.

Even if there is something in the United States, we must also have it. If the United States does not have it, we depend on the situation. In fact, many years ago, I said that we should pay more attention to future technology to achieve dimension upgrade and overtaking. But after so many years In the actual development process, I have to admit that we still spend more energy on catching up.

Of course, I understand that there are many problems such as insufficient money, insufficient talents, but in the face of quantum technology, I must say that although judging from the current development, it may take at least 20 or 30 years for quantum technology to be commercially available, but quantum computing Just like controllable nuclear fusion, once someone matures first, it will be an absolute oligarch, and a subversive pattern will emerge. "

Meng Qian's remarks are actually biased. Huaxia has invested a lot in future technology over the years, and whether it is overtaking on curves or ascending the dimension, these are the main themes now, but Meng Qian said that on purpose , Turn small problems into big problems, so that they can be more valued by leaders.

Because for quantum technology, Meng Qian's prophet can't help much, he can only do more other things.

The leaders looked at each other without speaking, and Meng Qian continued, "Of course, the premise of paying attention is also worthy of attention. I want to show you the development of quantum computing. Last year, Guo Guoping and Xiao Ming from the Quantum Information Key Laboratory of the Chinese Academy of Sciences The professor and his collaborators successfully realized the control non-logic gate of the two charge qubits of the semiconductor quantum dot system, and not long ago, our Gale Group also made a big breakthrough.

Last month, we innovatively designed a six-quantum dot structure with open T-shaped electrodes. This structure enables a strong coupling between the control bit and the target bit, and at the same time, the coupling between the two target bits is small, which satisfies the In order to realize the control requirements of the two control bits to the target bit controlled NOT gate.

Using the optimized high-frequency pulse quantum measurement and control circuit, we have successfully realized the world's first three-charge qubit logic gate based on the semiconductor quantum dot system, further improving the efficiency of quantum computing, and providing a scalable and integrated semiconductor quantum chip. The development has laid a solid foundation. "

This was supposed to be the result of Guo Guangcan's team, but it was cut off by Dafeng Group two years in advance, but there is no way. In order to further promote the development of China's quantum computing, Meng Qian can only feel sorry for the researchers of Guo Guangcan's team.

After all, the development of semiconductor fully electronically controlled quantum chips compatible with contemporary semiconductor technology is one of the important directions of current quantum computer development.

"In addition, we found that we may use quantum computers earlier than we thought. That is, quantum computers with reduced functions, quantum computers that can only be used to solve special problems. Realizing a quantum computer requires many aspects. At the same time, the requirements are met. However, if the standards are lowered and some requirements are abandoned, the realization of quantum computers will be much easier.

On the issue of special development, what we need to solve is the algorithm problem. Obviously, quantum algorithm is also a difficult problem, but it is slightly better than hardware.

These are several important breakthroughs of our Dafeng Group. We are working hard to break through the bottleneck of quantum technology, but to be honest, we are a little tired now. "

"What does Mr. Meng want?" The leader finally spoke.

"Build a quantum environment in advance and train quantum talents in advance. Establish several national funds, and then move quantum technology directly to national laboratories. It is best to give quantum technology the highest level of attention."

"The highest level of attention? Is it a bit too much, this is just a technology that has just reached its infancy."

We can't always wait for others to have an atomic bomb and build an atomic bomb ourselves. It's already 2015, can't we build the world's first "quantum atomic bomb" by ourselves?

I can say that quantum computing is the cash truck of digital soft money. Without the protection of quantum computing, why is the more digital soft money is developed now, the greater the risk of future economic collapse. "

The leaders finally understood that Meng Qian was just a crybaby with candy, talking about how hard he was, how difficult he was, and how much support he needed.

But whether it is the question raised by Meng Qian or the exemplary role played by Dafeng Group's technological breakthroughs, they are all very real things.

The leaders also gradually made their inner decisions.

A policy to further promote Huaxia's quantum technology has begun to brew.