In recent years it computing developed with great speed. According to scientist Gordon Earl Moore, the number of transistors on a processor would double every 24 months or so. Transistors are the fundamental elements for a processor to perform calculations. Therefore, this prediction known as Moore's Law means that the processing power of a computer would double every two years.
Regularly see companies like Intel and AMD launch ever faster processors. For this, it is necessary to manipulate portions of the increasingly smaller area. But there is a limit to this. When transistors are beginning to be made with only a few molecules, it is difficult to reduce its size further and thus increase the capacity of our electronics.
Therefore, quantum computing is the science that studies the use of quantum mechanics to perform computational processing.