How fast is the quantum computer?

Up to one trillion operations per second.

The practical significance of optical quantum computer is that it can solve problems that traditional computers can't handle. Professor Pan Jianwei said that the algorithm that can be realized by optical quantum computers is called "Bose sampling", which is difficult to be solved effectively on classical computers. If we want to compare the two, it takes 65,438+050,000 years to decompose a large number of 300 bits using a trillion-time classical computer, while it takes only 65,438+0 seconds for a trillion-time quantum computer to produce results.

Quantum computing only accelerates specific problems. For example, Shor algorithm factorizes large numbers, which can achieve exponential acceleration. Not all problems will accelerate.

Quantum computing is not only fast, but also wide.

According to theoretical prediction, it takes only 10 second for a quantum computer with a clock frequency of GHz to solve a linear equation system with billions of variables. The computing power of a quantum computing device with 100 photons is as high as 1 trillion times per second.