The article might be quite interesting for one or the other nerd here. Besides quantum computers themselves, the simulation of a quantum computer is also progressing.

Why a simulation if I could also research on the real computer?

Because developing a quantum computer is an enormous technological challenge. The qubits used are very sensitive to environmental influences and the more qubits a system has, the more sensitive it becomes. So I simply simulate the object and thus avoid the problems that the real version brings with it.

https://t3n-de.cdn.ampproject.org/c/s/t3n.de/news/fujitsu-quantencomputer-simulator-1463199/amp/