Dahan Technology Empire

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Planting maple trees after arriving at a place is a continuation of the tradition of Liuyun Town in the Qingquan era by the people of the empire. There are several brothers in the family who plant a few maple trees. The two brothers, He Jingfeng, naturally plant two maple trees.

But if you think that these maple trees are traditional maple trees, you are wrong. This maple tree is a new type of maple tree that was specially researched and developed by a company within the empire, using genetic recombination technology.

It is characterized by strong adaptability, as long as it is on a living planet, it can almost have a 100% survival rate; it can grow very tall, with luxuriant branches and leaves, and is very ornamental. This symbolic maple Trees, of course, can't be skinny, with small leaves and few leaves.

Also, this kind of maple tree grows very fast. Although it cannot be faster than those super fast-growing trees, it is more than ten times faster than traditional maple trees. It only takes a few years to grow into a towering tree; The other thing is that this kind of maple tree has undergone genetic birth control. All the trees used for planting on alien planets have adopted fund birth control surgery, which cannot reproduce the next generation, in order to protect the ecological environment of the planet where they are located!

In the interstellar era, nothing is simple. This kind of maple tree, which combines biotechnology, is called inheritance tree! within the empire.

After planting the inheritance tree, He Jingfeng became worried. The population of the Canis Major galaxy is only tens of millions, and the population is very rare when it is allocated to each planet. The 20,000 mu of land of his family was unexpected for a while. How to develop.

The land is vast and sparsely populated, and almost every household has huge land. Everyone is worrying, and He Jingfeng is the same, flying slowly over his territory with an aircraft, hoping to find something special.

The land is good, flat and fertile, but it's a pity that we can't find any bright spots to develop! Now it seems that we can only grow some cash crops. He Jingfeng shook his head worryingly.

...

The Milky Way, the solar system, the capital of the empire, Venus, Liu Qingquan woke up early from sleep, and the long-term biological clock was very punctual, and he woke up on time.

Look at the beauty in her arms, because the throne has been passed on to her son, she has been obedient to herself during this period of time, and she has unlocked countless poses that she never dared to imagine before, which made Liu Qingquan unbearable.

Well, after this position was announced, I have a lot of leisure time, and I'm not used to it! Liu Qingquan put his head on his hands and looked at the beautiful scenery outside. The sun was shining, the birds were singing and the flowers were fragrant. It was a good day!

Zhou Jingbo seems to say that quantum computers have made new progress, um, let's go see him today! Liu Qingquan seemed to have thought of something, and was about to get up quietly, tiptoeing so as not to disturb the beauties around him.

Why do you go early? Don't want to do any more activities? Unexpectedly, the beauty beside her has already woken up. When she saw Liu Qingquan who was creeping around, she grabbed her and said charmingly.

You damn demon, fine, I will let you know how powerful I am today! Liu Qingquan looked at the half-covered beauty of the beauty, and was about to get furious, and let the other party feel the thunder and dew!

On a bright morning, bursts of charming sounds of nature sounded, arousing infinite reverie!

At 9 o'clock in the morning, Liu Qingquan came to the Quantum Research Institute of the Imperial Academy of Sciences refreshed. As the most important branch of the Imperial Academy of Sciences, the Quantum Research Institute covers a very large area and has many research offices. There are more than a thousand laboratories and hundreds of thousands of scientific research staff.

Boss, you came just in time. I have a problem here and I want to ask you for advice.

Zhou Jingbo, who was concentrating on the experiment, accidentally saw Liu Qingquan coming, and hurried over. Although the research work on quantum computing has reached the final stage,

However, there are still some major issues that have not been overcome. During this period of time, Zhou Jingbo was almost too worried to eat. When he saw Liu Qingquan coming, he seemed to see a savior, and he came over like a savior!

Look at you, you are getting old anyway, how can you say that you are also a national treasure of the empire, pay attention to your image! Liu Qingquan shook his head and said when he saw Zhou Jingbo's hurried appearance.

Boss, it's not that you don't know my temperament, let alone my age, I am now stronger than a 20-year-old boy, and killing a tiger is not a problem!

Zhou Jingbo twitched his lips, practicing Yuanli method specialized for scientists, and Zhou Jingbo has been practicing since he graduated from university and entered Qingquan Technology. His age is not bad, so his progress has been good. Now he looks the same as he did decades ago .

Boss, our quantum computer research work has progressed to the last step, but until now, there is still a very troublesome problem!

Zhou Jingbo is a workaholic, he didn't say a few words to Liu Qingquan, and got into the topic directly.

Well, what's the problem? Liu Qingquan nodded. Compared with those who like to compliment, Liu Qingquan still prefers Zhou Jingbo's vigorous and decisive style, which is what a scientist should have!

Whether it is quantum parallel computing or quantum simulation computing, quantum coherence is essentially used. Unfortunately, it is difficult to maintain quantum coherence in practical systems.

In a quantum computer, the qubit is not an isolated system, it will interact with the external environment, resulting in the decay of quantum coherence, that is, decoherence (also called decoherence). Therefore, to make quantum computing a reality , a core problem is to overcome decoherence.”

Zhou Jingbo began to slowly explain the problems he encountered in his work. If you need others to answer your questions for you, you need to explain the cause and effect of the matter slowly, and Zhou Jingbo is like this at this time.

In order to eliminate quantum decoherence, we used countless methods, and finally we found that quantum coding is the most effective method to overcome decoherence found so far.

The main quantum coding schemes are: quantum error-correcting codes, quantum error-avoiding codes, and quantum error-proofing codes. Quantum error-correcting codes are the analogy of classical error-correcting codes, and are currently the most studied type of coding. Their advantages It has a wide range of applications, but the disadvantage is that it is not efficient.

When Zhou Jingbo came down here, he stopped for a while and asked Liu Qingquan to absorb the things in front of him first.

After Liu Qingquan listened to Zhou Jingbo's words, he kept calculating the other party's thoughts in his mind. The well-informed Liu Qingquan naturally knew what problems they encountered at once.

A quantum computer, as the name suggests, is a machine that realizes quantum computing. To explain quantum computing clearly, first look at classical computing. A classical computer can be described physically as a machine that transforms the input signal sequence according to a certain algorithm, and its algorithm is realized by the internal logic circuit of the computer.

A classical computer has the following characteristics; its input state and output state are both classical signals, described in the language of quantum mechanics, that is: its input state and output state are both eigenstates of a certain mechanical quantity. If the binary sequence 0110110 is input, quantum notation is used, ie |0110110\u003e. All input states are mutually orthogonal. It is impossible to enter the following superposition state for a classical computer: C1|0110110＞＋C2|1001001＞.

Every step of transformation inside a classical computer evolves into an orthogonal state, while general quantum transformations do not have this property. Therefore, transformations (or calculations) in classical computers only correspond to a special set.

Corresponding to the above two limitations of classical computers, quantum computers have been promoted respectively. The input of a quantum computer is described by a quantum system with finite energy levels, such as a two-level system (called a qubit), and the transformation of a quantum computer (ie, quantum computing) includes all possible positive transformations.

Therefore, the characteristics of quantum computers are: the input state and output state of quantum computers are general superposition states, which are usually not orthogonal to each other;

The transformations in a quantum computer are all possible positive transformations. After the output state is obtained, the quantum computer performs certain measurements on the output state and gives the calculation result.

It can be seen that quantum computing has greatly expanded classical computing, and classical computing is a special type of quantum computing. The most essential features of quantum computing are quantum superposition and quantum coherence.

The transformation realized by the quantum computer for each superposition component is equivalent to a classical calculation. All these classical calculations are completed at the same time, and are superimposed according to a certain probability amplitude to give the output result of the quantum computer. This calculation is called quantum parallel computing.

Compared with traditional computers, quantum computers have very obvious advantages; quantum characteristics may break through the limits of existing classical information systems in terms of increasing computing speed, ensuring information security, increasing information capacity, and improving detection accuracy.

A memory of 250 qubits (composed of 250 atoms) may store numbers up to 2 to the 250th power, which is more than the number of all atoms in the known universe.

Using the quantum search algorithm to attack the existing cryptographic system requires 1,000 years of computation for classical calculations, but less than 4 minutes for quantum computers.

The quantum key system uses the quantum state as the information carrier, and its security is guaranteed by the principle of quantum mechanics.

Based on the quantum teleportation process, multi-terminal distributed computing can be realized to form a quantum Internet.

...

Are you worried about how to improve the efficiency of quantum coding?

Liu Qingquan has always been very concerned about quantum computers. Although quantum computers seem to be simpler than quantum foam bombs and quantum communications, in fact, quantum computers are very powerful, but their calculations are much more complex than quantum communications and quantum communications. Foam bombs are infinitely more complicated.

The technology contained in the quantum computer itself includes quantum communication technology and quantum foam technology, and also involves countless other related new quantum technologies. The calculation of quantum computers is not as simple as ordinary people imagine!

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