Bad Qubits — Learn Quantum by Doing

|q⟩ Bad Qubits

Multiple choice

How does error mitigation (e.g. zero-noise extrapolation) differ from full quantum error correction in terms of resource overhead?

Mitigation requires thousands of physical qubits per logical qubit
Mitigation needs no extra measurements at all
Mitigation adds sampling (measurement) overhead, not extra qubits
Mitigation eliminates statistical noise rather than systematic bias