The Technology Tree of Xueba

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After Zhou Yu opened the meeting of the Scientific and Technical Committee, he and Academician Tian Kai came to the Quantum Computer Laboratory of the Computer Research Institute.

Spark's most significant project now is the quantum computer project.

The quantum computer is divided into two parts. Academician Tian Kai is responsible for the hardware part of the quantum computer.

Tianpeng Wei, director of the Institute of Basic Sciences, and Zhang Yunqiang, general manager of Spark Intelligent, are responsible for the software part of the quantum computer.

Led by Wei Tianpeng, he is mainly responsible for the quantum algorithms of quantum computers.

Since the invention of the computer, its role in promoting science and technology is obvious to all.

Classic supercomputers running artificial intelligence technology have made Spark's scientific research projects far ahead of other research units.

If a quantum computer with excellent parallel computing capabilities is developed, any scientific research project can be simulated by the quantum computer's powerful quantum simulation function.

Quantum computers are too far apart from classic computers. They are simply the difference between a carriage and a high-speed rail.

In the 1950s, just after the classic computer was invented by humans, scientists discovered that energy consumption would cause the chip in the computer to heat up, which greatly affected the integration of the chip and thus limited the speed of the computer.

This is an important reason for Academician Tian Kai to abandon graphene chips. Graphene chips also belong to classic computer structures.

Even though graphene transistors consume very low power and dissipate heat very quickly, millions of transistors are gathered on small chips, and the heat generated by energy consumption is also amazing.

The computing structure and transistor materials of classic computers fundamentally limit the development of classic computers.

Academician Zhou Yu and Tian Kai went to the laboratory and talked about some quantum computer knowledge.

The classical computer currently in use can also be regarded as a kind of quantum computer. The classical computer has irreversible operations in the calculation process, which is why it generates energy consumption.

Scientists have already discovered this reason, and they also think of solutions to them.

All classic computers can find a corresponding reversible computer without affecting the computing power.

Every step in a classic computer can be transformed into a reversible operation.

In reality, the idea is limited by the logic circuits of classic computers, but this idea cannot be realized, but quantum computers can.

This perfectly fits quantum mechanics and is the most basic principle of quantum computer research and development.

Quantum mechanics can use a unitary transformation to represent the computing process of a computer.

In classical computers, the basic information unit is bits, and the operation object is various bit sequences.

In a quantum computer, the basic information unit is a qubit, and the operation object is a qubit sequence.

There is not much difference in the names of the two kinds of computer operation objects, but the essential difference is very large.

The qubit sequence can not only be in the superposition state of various orthogonal states, but also in the entangled state.

These special quantum states provide the most fundamental parallel computing capabilities of quantum computers.

In the process of computing data by a quantum computer, any unitary transformation can be performed. After the output state is obtained, the measurement is performed to obtain the calculation result.

A quantum computer transforms each superimposed component. All these transformations are performed at the same time, and they are superimposed with a certain probability amplitude to give the result. This calculation is called quantum parallel computing.

The most fundamental ability of a quantum computer is to have huge parallel computing capabilities.

Classical computers can only perform calculations in order. This is limited to the most basic structure of a classical computer to complete logical operations, the logic circuits of a computer.

A logic circuit consisting of AND gate logic can only perform addition operations in the basic order.

Xinghuo Technology Pangu 2 supercomputer needs 100 years of data. It takes only 30 qubits of a quantum computer to operate for 24 hours.

In addition to quantum computers performing massively parallel operations. It can also simulate quantum phenomena.

The world is essentially composed of one quantum, which can simulate quantum phenomena, and quantum computers can simulate any phenomenon in reality.

This effect cannot be achieved by classical computers. A scientific experiment of artificial intelligence Mozi calculus is essentially a comparison of big data to find the most likely result.

Quantum computers are not the same. Once a truly usable quantum computer is developed, quantum simulation can simulate 99.9999% of what can be achieved experimentally.

It even simulates an extreme environment that hasn't existed, which can be achieved through experiments. Through quantum simulation experiments, as long as the conditions are met, it can generally be reproduced in reality.

However, using this function requires huge computing power. A paramecium is composed of astronomical and digital quanta. If you want to simulate it, the data produced is beyond people's imagination.

When using the quantum simulation function to calculate Paramecium, it is necessary to calculate the morphology and trajectory of each quantum that makes up Paramecium.

Turning this into a mathematical problem turns into computing a huge Hilbert space. It will produce unrealistic astronomical figures.

There are and can only be quantum computers that can handle such huge amounts of data.

Academician Zhou Yu and Tian Kai walked to the quantum computer laboratory and said with emotion: "Quantum theory is too complicated. I only know some superficial theories. Too deep theories cannot understand.

Quantum mechanics is comparable to advanced mathematics. It is an extremely abstract discipline. Without highly abstract thinking, it would be impossible to understand him.

I really admire Academician Tian, ​​you are so old, you can re-learn quantum mechanics, and you can achieve such great results. "

Academician Tian Kai said modestly: "I only know a little about quantum mechanics. UU reading www.uukanshu.com My knowledge reserve in the field of quantum mechanics is really not as good as the young scientists in our laboratory.

For example, Zhang Wei, director of our quantum computer laboratory, studied under the academician Pan Jianwei, a top expert in quantum science in China.

His knowledge reserves are better than mine, and most of the achievements of quantum computers were developed by him. "

Tian Kai did not contribute at all. His contribution to the quantum computer was only to propose the establishment of this project and recruit talents to run this project.

He plays a coordinating role, and is especially responsible for negotiating with quantum algorithm developers such as Wei Tianpeng.

Academician Tian Kai said with a smile: "General Manager Zhou, in fact, only understands quantum mechanics, and does not study it in depth.

I use a little story to help you understand quantum mechanics.

Imagine an atom placed in a magnetic field, which rotates like a gyro, so its axis of rotation can be either pointing upwards or downwards.

Common sense tells us that the rotation of atoms may go up or down, but not all at the same time.

But in the strange world of quantum, atoms are described as the sum of two states, the sum of one atom turning up and the atom turning down.

In the wonderful world of quantum, every kind of object is described by the sum of all incredible states.

This is also a well-known problem in quantum mechanics, Schrödinger's cat. "

"Schrödinger's cat, this is a well-known thought experiment."

With a smile on Zhou Yu's face, he didn't need to have a deep understanding of quantum theory as he walked into the quantum computer laboratory, as long as he knew which theory was correct and supported scientists on the right path.

It is difficult for others to judge the right path, but it is not difficult for Zhou Yu. The technology tree in his mind can tell him which path is correct.