The best estimate I've seen is that we need about 5-7 orders of magnitude more qubits and 1-2 orders of magnitude lower error rates: https://sam-jaques.appspot.

The best estimate I've seen is that we need about 5-7 orders of magnitude more qubits and 1-2 orders of magnitude lower error rates: https://sam-jaques.appspot.com/quantum_landscape_2023 https://sam-jaques.appspot.com/quantum_landscape_2023