[cohomologo]

The Google group in Santa Barbara is building to a 49-qubit computer. If I understand correctly, it'll be interesting for understanding how you calibrate your quantum machine and validate that it is doing what it is supposed to. The algorithms they run on classical computers to validate that device will need a decent amount of supercomputer time. And much bigger devices would be impossible to validate with a classical computer in the same way, so in some sense you hit "the limit" of classical computation and start to move beyond.

But for the computational problems that are useful for applications, which are not very much like the problem they use for validation, 49 qubits is still far far away from beating a classical computer.