Chapter 447, Quantum Computer

The entire Quantum Cloud Galaxy belongs to the Imperial Quantum Science Institute. There are no laboratories on the inner circle of life planets. They are all places for scientists and researchers to live. The real laboratories are all placed in space.

Because it is a closed galaxy, the entire Quantum Cloud Galaxy is very quiet, with a very small population, and there are very few spaceships and so on compared with other galaxies in the empire.

However, the huge space cities in space are huge in scale. These are all laboratories. Each space city represents a laboratory. Some are personal laboratories, and some are team laboratories. For safety, they are very evenly distributed throughout the galaxy.

Li Fu, Yu Liang, and Gong Gaofei walked directly in the void. The three of them did not wear any protective clothing, but they were like strolling in the garden in space, without any discomfort. They stepped lightly in the void, starting with a small step, but they crossed a very long distance at once. In just a few steps, they came from the inner circle of life planets to the space city where the Imperial Quantum Science Institute is located.

In the space city where the headquarters is located, the guards of the space city do not seem to be surprised at all that the three people came here directly, because from time to time, people came here directly across the void. The popularity of Yuanli cultivation has given birth to more and more powerful Yuanli practitioners, and there are also many people who cross the void directly in the flesh.

The space city where the headquarters is located is relatively busy. From time to time, there are scientists who cross the void directly in the flesh, but more are small private spaceships that rise and fall.

The whole space city is brightly lit and divided into many functional areas. Various space constructions are lined up on it, and there are various green plants and so on for embellishment. Scientists in white coats are concentrating on research.

"Your Majesty, teacher, this is the latest achievement of our Quantum Research Institute, quantum computer!"

Gong Gaofei took Li Fu and Yu Liang to visit the headquarters. There is no doubt that he must show the latest research results to the two first. There are very few research results in quantum technology, and the only thing that can be shown is quantum computers.

Gong Gaofei pointed to a huge behemoth, like a huge house, with data cables of various colors connected to it.

"Quantum computer?"

Yu Liang raised his eyebrows when he heard it.

The quantum computer mentioned by Gong Gaofei is not the same concept as the quantum computer proposed in the Earth era. The quantum computer proposed in the Earth era is a physical device that follows the laws of quantum mechanics to perform high-speed mathematical and logical operations, store and process quantum information. When a device processes and calculates quantum information and runs quantum algorithms, it is a quantum computer.

In the Earth era, whether it is a quantum computer depends on whether the device uses quantum algorithms and quantum information for processing and calculation. If it does, it can be called a quantum computer.

The quantum computer mentioned by Gong Gaofei here is obviously not the same as the quantum computer in the Earth era. There is a qualitative difference between the two.

Here, we must first talk about the working principle of traditional computers. The working principle of traditional computers is based on the logical operation of the two states 1 and 2. It was first developed after World War II to calculate the trajectory of missiles and artillery shells.

Traditional computers can be called binary computers because they only have two states of logic, 1 and 2. Their advantages are simple principles and low technical difficulty.

However, from the 1960s to the 1970s, people found that energy consumption would cause the chips in the computer to heat up, greatly affecting the integration of the chips, thus limiting the speed of the computer. Studies have found that energy consumption comes from irreversible operations in the calculation process.

So, does the calculation process have to be completed with irreversible operations? The answer to the question is: all classical computers can find a corresponding reversible computer without affecting the computing power. Since every step of the operation in the computer can be transformed into a reversible operation, it can be represented by a unitary transformation in quantum mechanics.

Early quantum computers are actually classical computers described in the language of quantum mechanics, and do not use the essential characteristics of quantum mechanics, such as the superposition and coherence of quantum states. In classical computers, the basic unit of information is a bit, and the operation object is various bit sequences.

Similarly, in quantum computers, the basic information unit is the quantum bit, and the operation object is the quantum bit sequence. The difference is that the quantum bit sequence can not only be in a superposition state of various orthogonal states, but also in an entangled state.

These special quantum states not only provide the possibility of quantum parallel computing, but also bring many wonderful properties. Unlike classical computers, quantum computers can perform arbitrary unitary transformations, and after obtaining the output state, they can measure and obtain the calculation results.

Therefore, quantum computing has greatly expanded classical computing. In mathematical form, classical computing can be regarded as a special type of quantum computer. Quantum computers transform each superposition component, and all these transformations are completed simultaneously and superimposed according to a certain probability amplitude to give the result. This kind of calculation is called quantum parallel computing. In addition to parallel computing, another important use of quantum computers is to simulate quantum systems, which is a task that classical computers cannot handle.

Because traditional computers are binary computers, when performing calculations, all the input information is converted into binary information, then binary operations are performed, and finally converted into the required information when output.

This means that traditional computers have a limitation in computing energy. Once the data to be calculated is too large, traditional computers will find it difficult to cope with it, especially when performing simulation deductions. Traditional computers are increasingly unable to meet the needs of scientific research.

Quantum computers use the characteristics of quantum entangled states. Because of the quantum entangled state, they have countless possibilities and are completely free from the limitations of base operations, which essentially makes the computer's capabilities a qualitative leap.

"We should have developed new computer technology a long time ago. Traditional computers are getting worse and worse. Apart from other things, the imperial military has repeatedly asked our Academy of Sciences to research new computers. Without powerful computers, it is difficult to calculate the trajectory of enemy targets on the battlefield, so as to lock the target and destroy it."

Li Fu smiled. Computers are a bit like meridian networks for a civilization and a country. The speed of meridian networks is related to the speed of reaction.

This is particularly important on the battlefield. Wars in the interstellar era are launched at very long distances. The speed of aircraft is very fast and the trajectory is erratic. These all need to be calculated by computers.

Traditional computers, especially supercomputers, have very terrible and powerful computing power, but speed is what is needed on the battlefield. If the calculation is slow by even 0.001 seconds, it may change rapidly and miss opportunities.

Another is scientific research. With the development of science and technology, more and more experiments have become very dangerous and require very high costs. Therefore, if we can simulate experiments based on existing data in computers, we can save costs, reduce risks, and greatly promote scientific research.

Why did the five big gangsters on Earth unanimously pass a resolution to ban new nuclear tests in the Earth era? On the one hand, it is because these five gangsters have already conducted countless experiments and obtained various detailed data; on the other hand, due to the development of computer technology, many experiments can actually be simulated by computers.

This is even more true in the interstellar era, especially for many powerful experiments. If they are not simulated on computers in advance, once the actual experimental operation is carried out, one careless mistake may cause devastating consequences, such as quantum foam experiments, super-powerful nuclear bomb experiments, super-strong magnetic weapons, energy weapons experiments, etc., which can easily destroy a planet.

"Originally, quantum computers were the research focus of our Quantum Research Institute. We had a deep accumulation of knowledge in the past. Over the years, we have shifted our focus to the research of quantum bubble bombs. Although there is no substantial tension, we have also made great progress in quantum technology. With the accumulation of knowledge, we have finally developed a quantum computer."

"Although it has just been developed, its computing power is hundreds of millions times that of the most advanced supercomputers in our empire. As long as there is such a quantum computer, all the traditional supercomputers in our empire can be eliminated."

Gong Gaofei seemed a little proud. The terrifying computing power of quantum computers completely crushed the existing traditional computers. One uses the diversity of quantum entangled states, and the other is based on the principle of binary. There is a qualitative leap between the two, and they cannot be compared at all.

"Hundreds of millions of times? Wow, it's really amazing."

Yu Liang smiled when he heard it. His students are amazing, so he, as a teacher, is naturally proud.

"You should have reported this earlier, why are you hiding it?"

"Teacher, this quantum computer was only recently developed, and we haven't had time to report it yet. We are also thinking of reporting it at the annual science conference, and then we can improve it."

"Well, the size is a bit too big, it would be better if it could be made smaller."