There have been many negative results obtained in studies on quantum computers in the laboratory. Despite all this, they have solved many problems that traditional computers could not solve in a short time. The algorithm used for this works flawlessly in theory. In practice, however, millions of qubits are needed to factor a large number consisting of a large number of digits. Unfortunately, this is not possible with today’s science and technology. The quantum computer developed by Google in 2019 with 53 (fifty-three) qubits can solve a problem in a few minutes that today’s ordinary computers can solve in thousands of years. IBM, on the other hand, claimed that such a problem can be solved in 2 or 3 days, not thousands of years in traditional computers. A quantum computer developed by a Chinese company was able to solve a problem that could be solved in 8 years in just 2 hours.
