Quantum computing still seems to be at a pretty early stage. At the same time, it looks like it has the potential to do truly remarkable things. In at least one case, it did something a classical computer just can’t feasibly do:
But that seriously understates what’s going on here. Every calculation that’s done on a quantum computer will end up being a measurement of a quantum system. And in this case, there is simply no way to get that probability distribution using a classical computer. With this system, we can get it in under 10 minutes, and most of that time is spent in processing that doesn’t involve the qubits. As the researchers put it, “To our knowledge, this experiment marks the first computation that can only be performed on a quantum processor.”Ars Technica
For more, read the full article “Paper leaks showing a quantum computer doing something a supercomputer can’t | Ars Technica“.