In the middle of the last century, top scientists such as Einstein, Boll, Oppenheimer, etc. joined the "Manhattan" project led by the United States. Some people may not have heard of the Manhattan Project, but the atomic bombs and computers conceived by the Manhattan Project may be unknown to everyone.

Quantum computing is to combines quantum mechanics and computing technology used in atomic bombs to form more subversive scientific and technological achievements. Coincidentally, the concept of quantum computing was first proposed by Richard Feynman, one of the members of the "Manhattan" project, in 1982.

In 1985, after Feynman proposed the idea of quantum computing, David Duss proposed the quantum Turing machine model. However, after in-depth research, the industry generally believed that there were problems with the practicality of quantum computing, and the quantum algorithms at that time could not be used in general computing. The field has achieved good results, so the subject of quantum computing was once shelved. It was not until 2007, more than 20 years later, that the 16-qubit superconducting quantum computer developed by D-Wave Systems in Canada was successfully released, and people realized that It turns out that quantum computing may not be far away from us.

We know that the nuclear weapons produced by the Manhattan Project have had a huge impact on the security system of the real world, and with the blessing of powerful computing power, quantum computing will also subvert the existing digital world security system. Therefore, the United States will call quantum technology the "Manhattan Project" of the 21st century.

In the traditional computer system, the calculation unit and the computing power are linearly increasing, that is, if I already have 100 CPUs in my computer, adding another CPU at this time will only increase the overall computing power by 1%. Compared with traditional computers, the quantum computing system has added Hadamard Gate, CNOT Gate, and other unit gates that operate quantum into superposition and entangled states, in addition to the three classic logic gates and NOR. Such unique properties double the overall computing power of the quantum computer with each additional computing unit. Quantum hegemony means that quantum computers can solve problems that classical computers cannot solve at all. From the perspective of computational complexity theory, this usually means providing an exponential acceleration beyond the known or possible classical algorithms.

In layman's terms, the increase in computing power of quantum computers is exponential with the increase of computing units, while the increase in computing power of traditional computers increases linearly with the growth of computing units. With the increasing number of computing units, the computing power of quantum computing will be far better than traditional computers at the same cost.