> The Google plan is roughly to build a million-qubit system in about ten years, with sufficiently low errors to do error correction. Then at that point you wil

> The Google plan is roughly to build a million-qubit system in about ten years, with sufficiently low errors to do error correction. Then at that point you will have enough error-corrected logical qubits that you can run useful, powerful algorithms that you now can't solve on a classical supercomputer. And maybe even at a few hundred qubits, with lower errors, it may be possible to do something special purpose. Can an expert please explain the applications of this? Specifically, are they expecting to break Bitcoin, forge signatures (break SHA), and decrypt old TLS traffic (break Diffie-Hellman) in 5-10 years?